SCEC Records
Value is unchanged from previous extremes tables last updated by NCEI (formerly NCDC) between 1998 and 2006. Value exceeds all other valid values.
Value is changed from extremes tables last updated by NCEI (formerly NCDC) between 1998 and 2006. Value exceeds all other valid values.
Value ties values from earlier dates.
Value set at multiple stations on the same date.
Value set at multiple locations on the same date and ties values from earlier dates.
Value has been officially reviewed by a State Climate Extremes Committee.
Additional information is available. Official value may be exceeded by a widely accepted unofficial value that is not supported by a direct, calibrated observation (e.g., estimates, uncalibrated instruments, anecdotal reports).
Alabama
All-Time Maximum Temperature
112
degrees F
19250906
19250906
Centerville
011520
E
Alabama
All-Time Minimum Temperature
-27
degrees F
19660130
19660130
New Market
015867
E
Alabama
All-Time Greatest 24-Hour Precipitation
32.52
inches
19970719
19970720
Dauphin Island Sea Lab
012172
EA
Although higher amounts have been observed in other states, the 32.52 inches of rainfall that was observed in 24-hrs over July 19-20, 1997 at Dauphin Island Sea Lab in conjunction with Hurricane Danny is the greatest 24-hr rainfall that has been directly observed at an officially established observation station within the coterminous United States.
Alabama
All-Time Maximum 24-Hour Snowfall
20
inches
19930313
19930313
Walunt Grove
018648
N
Alabama
All-Time Maximum Snow Depth
22
inches
19400124
19400124
Reform
016847
N
Alabama
Hail: Weight
0.6125
pounds
20180319
20180319
Walter
N/A
NSA
Alabama
Hail: Circumference
13.75
inches
20180319
20180319
Walter
N/A
NSA
Alabama
Hail: Diameter
5.38
inches
20180319
20180319
Walter
N/A
NSA
Alabama
Hail: Volume
19.8
cubic inches
20180319
20180319
Walter
N/A
NSA
Alaska
All-Time Maximum Temperature
100
degrees F
19150627
19150627
Fort Yukon
26413
E
Alaska
All-Time Minimum Temperature
-80
degrees F
19710123
19710123
Prospect Creek Camp
507778
E
Alaska
All-Time Greatest 24-Hour Precipitation
15.05
inches
19861010
19861010
Seward
26438
N
The previously-listed state record of 15.2 inches at Angoon on October 12, 1982 was determined to be invalid by the SCEC, based largely on analysis that resulted in this Bulletin of the American Meteorological Society article.
Alaska
All-Time Maximum 24-Hour Snowfall
78
inches
19630209
19630209
Mile 47 Camp
505878
N
Alaska
All-Time Maximum Snow Depth
192
inches
20080411
20080411
Valdez Municipal Airport
509685
N1
Alaska
All-Time Maximum Snow Depth
192
inches
20080307
20080307
Valdez Municipal Airport
509685
N1
Arizona
All-Time Maximum Temperature
128
degrees F
19940629
19940629
Lake Havasu City
024761
E
Arizona
All-Time Minimum Temperature
-40
degrees F
19710107
19710107
Hawley Lake
023926
E
Arizona
All-Time Greatest 24-Hour Precipitation
11.4
inches
19700904
19700905
Workman Creek
029534
E
Arizona
All-Time Maximum 24-Hour Snowfall
38
inches
19870225
19870225
Alpine
020170
N1
Arizona
All-Time Maximum 24-Hour Snowfall
38
inches
19671214
19671214
Heber Ranger Stn
023961
N1
Arizona
All-Time Maximum Snow Depth
91
inches
19671221
19671221
Hawley Lake
023926
N
Arkansas
All-Time Maximum Temperature
120
degrees F
19360810
19360810
Ozark
035508
E
Arkansas
All-Time Minimum Temperature
-29
degrees F
19050213
19050213
Brook Farm Pond (near Gravette)
032930
E
Arkansas
All-Time Greatest 24-Hour Precipitation
14.06
inches
19821203
19821203
Big Fork
030664
E
Arkansas
Maximum Annual Precipitation Total
101.05
inches
20150101
20151231
Big Fork 1 SSE
030664
NA
This value exceeds the previous record of 100.05 inches at Leola (GHCN-Daily ID USC00034134; COOP ID 034134) from July 1, 2008 through June 30, 2009. The previous record was established by an ad hoc SCEC convened in February 2010, and replaced, in turn the previous record of 98.55 inches observed in New Hope in 1957.
Arkansas
All-Time Maximum 24-Hour Snowfall
25
inches
19180122
19180122
Corning
031632
N
Arkansas
All-Time Maximum Snow Depth
26
inches
19180122
19180122
Calico Rock 2WSW
031132
N
California
All-Time Maximum Temperature
134
degrees F
19130710
19130710
Greenland Ranch
043603
E
California
All-Time Minimum Temperature
-45
degrees F
19370120
19370120
Boca
040931
E
California
All-Time Greatest 24-Hour Precipitation
25.83
inches
19430122
19430123
Hoegees Camp
044017
EA
Hourly precipitation values for Hoegee's Campground (in the mountains outside Los Angeles) indicate the greatest 24-hour rainfall occurred between 1:00 AM on January 22nd to 1:00 AM on January 23rd. During that period, the storm delivered 25.83 inches (corrected from previous reports of 26.12 inches). A detailed post-storm report was produced by the Weather Bureau.
California
All-Time Maximum 24-Hour Snowfall
67
inches
19820105
19820105
Echo Summit Sierra at Tahoe
042671
N
California
All-Time Maximum Snow Depth
451
inches
19110311
19110311
Tamarack
048781
E
California
Maximum Wind Gust
199
mph
20170220
20170220
Alpine Summit (Ward Mt)
SUMAM (MesoWest)
SA
Colorado
All-Time Maximum Temperature
115
degrees F
20190720
20190720
John Martin Dam
054388
NA
Replaces previous established record of 114 degrees F set at Las Animas on July 1, 1933 and tied at Sedgwick on July 11, 1954. Also, a 118 degrees F report that had persisted in the record books at Bennett, CO on July 11, 1888 was found to be a transcription error. Area temperatures were ~15-20 degrees cooler on that date..
Colorado
All-Time Minimum Temperature
-61
degrees F
19850201
19850201
Maybell
055446
E
Colorado
All-Time Greatest 24-Hour Precipitation
11.85
inches
20130912
20130912
USGS Rod & Gun (Ft. Carson)
USGS 384053104492001
NA
Had a 9 AM to 9 AM observing period been used ending at 9 AM on September 13th, that the measurement would have been 12.46\". However, the SCEC chose to confirm the calendar-day value as the official record. In either case, the previously acknowledged record of 11.08\" at Holly on June 17, 1965 was superseded.
Colorado
All-Time Maximum 24-Hour Snowfall
75.8
inches
19210414
19210415
Silver Lake
057648
E
Colorado
All-Time Maximum Snow Depth
251
inches
19790331
19790331
Wolf Creek Pass 1E
059181
N
Colorado
Hail: Weight
0.53125
pounds
20190813
20190813
8 mi NNW of Bethune
SA
Colorado
Hail: Circumference
12.875
inches
20190813
20190813
8 mi NNW of Bethune
SA
Colorado
Hail: Diameter
5.25
inches
20230808
20230808
8 mi ENE of Kirk
SA
A record hailstone was discovered by a storm chaser near Kirk, CO, on 8 August 2023. The diameter of this hailstone exceeded the prior record of 4.83 inches set near Bethune, CO, on 13 August 2019.
Colorado
Hail: Volume
16.55
cubic inches
20190813
20190813
8 mi NNW of Bethune
SA
Colorado
Lowest Mean Sea Level Pressure
970.4
hPa
20190313
20190313
Lamar
USW00003013
NSA
This was the initial mean sea level pressure record established for any state. The SCEC report therefore contains several additional methodological considerations for future MSLP committees. More details are available in the report associated with this investigation.
Connecticut
All-Time Maximum Temperature
106
degrees F
19950715
19950715
Danbury
061762
E1
Connecticut
All-Time Maximum Temperature
106
degrees F
19160823
19160823
Torrington
068438
E1
Connecticut
All-Time Minimum Temperature
-32
degrees F
19610122
19610122
Coventry
061689
E1
Connecticut
All-Time Minimum Temperature
-32
degrees F
19430216
19430216
Falls Village
062658
E1
Connecticut
All-Time Greatest 24-Hour Precipitation
12.77
inches
19550819
19550819
Burlington
060973
E
Connecticut
All-Time Maximum 24-Hour Snowfall
36
inches
20130208
20130209
Ansonia 1NE
060128
NSA
The 24-hr snowfall at Ansonia 1NE was the result of a powerful blizzard which impacted the Tri-State Region. After the storm subsided, many locations around the region reported more than 30 inches of snow. The State Climate Extremes Committee verified the validity of the observation at Ansonia.
Connecticut
All-Time Maximum Snow Depth
55
inches
19610205
19610205
Norfolk 2SW
065445
E
Delaware
All-Time Maximum Temperature
110
degrees F
19300721
19300721
Millsboro
076020
E
Delaware
All-Time Minimum Temperature
-17
degrees F
18930117
18930117
Millsboro
076020
E
Delaware
All-Time Greatest 24-Hour Precipitation
12.48
inches
20160928
20160929
Harbeson
DEOS Mesonet Station DWAR (NWSLI WARD1)
NSA
The Harbeson value replaced the previously reported record of 8.5 inches, set at Dover on 13 July 1975. However, the SCEC reviewing the Harbeson record determined that the Dover record had actually been exceeded twice between 1975 and the Harbeson event, during Tropical Storms Floyd (1999) and Irene (2011). More details are available in the report associated with this investigation.
Delaware
All-Time Maximum 24-Hour Snowfall
25
inches
19790219
19790219
Dover
072730
E
Delaware
All-Time Maximum Seasonal (July-June) Snowfall
72.7
inches
20090701
20100630
Bear 2SW
071200
NSA
Delaware
Monthly Maximum Snowfall
46.9
inches
20100201
20100228
Bear 2SW
071200
NSA
Delaware
All-Time Maximum Snow Depth
28
inches
20100207
20100207
Greenwood 2.9 SE
CoCoRaHS DE-SS-7
NSA
The Greenwood value replaced the previously reported record of 25 inches, set at Wilmington New Castle CO AP (13781) on 18 February, 2003 and Bridgeville 1 NW (071330) on 19 February 1979. More details are available in the associated report.
Florida
All-Time Maximum Temperature
109
degrees F
19310629
19310629
Monticello
085879
E
Florida
All-Time Minimum Temperature
-2
degrees F
18990213
18990213
Tallahassee
088754
E
Florida
All-Time Greatest 24-Hour Precipitation
23.28
inches
19801111
19801112
Key West
12836
NA
The previously reported extreme of 38.70 inches at Yankeetown on September 5, 1950 is an estimated depth of rainfall calculated as part of a post-storm survey of Hurricane Easy (Cedar Keys Hurricane). Value has historically been considered reasonably accurate (and even an underestimate of actual rain fall), but as an estimate cannot be considered an official observation from a reliable precipitation gauge.
Florida
All-Time Maximum 24-Hour Snowfall
4
inches
19540306
19540306
Milton Exp. Stn.
085793
E
Florida
All-Time Maximum Snow Depth
4
inches
19540306
19540306
Milton Exp. Stn
085793
N
Georgia
All-Time Maximum Temperature
112
degrees F
19830820
19830820
Greenville 2 NNW
093915
E1
Georgia
All-Time Maximum Temperature
112
degrees F
19520724
19520724
Louisville
095314
E1
Georgia
All-Time Minimum Temperature
-17
degrees F
19400127
19400127
CCC Fire Camp F-16 (nr. Beatum)
EA
Record of -17 degrees F at Civilian Conservation Corps Logging Camp F-16 is congruent with similar low temperatures observed in the area on January 27, 1940. This observation is archived as part of the National Archives CCC collection.
Georgia
All-Time Greatest 24-Hour Precipitation
21.1
inches
19940706
19940706
Americus
090253
E
Georgia
All-Time Maximum 24-Hour Snowfall
19.3
inches
19420303
19420303
Cedartown 3NE
091732
E
Georgia
All-Time Maximum Snow Depth
18
inches
19930313
19930313
Chatsworth 2
091863
N
Hawaii
All-Time Maximum Temperature
100
degrees F
19310427
19310427
Pahala (Hawaii)
517421
E
Hawaii
All-Time Minimum Temperature
12
degrees F
19790517
19790517
Mauna Kea Observatory (Hawaii)
516183
E
Hawaii
All-Time Greatest 24-Hour Precipitation
49.69
inches
20180414
20180415
Waipā Garden (Kauai)
NA
This value exceeded the previous record of 38 inches, observed at Kilauea Sugar Co. Plantation on 24-25 January 1956, which itself was an estimate. The 2018 value also became the national record for 24-hour precipitation. View the associated National Climate Extremes Committee report. The members of the SCEC deferred to the NCEC findings.
Hawaii
All-Time Maximum 24-Hour Snowfall
6.5
inches
19360202
19360202
Haleakali (Maui)
510992
N
Hawaii
All-Time Maximum Snow Depth
5
inches
19380406
19380406
Haleakali (Maui)
510992
N
Idaho
All-Time Maximum Temperature
118
degrees F
19340728
19340728
Orofino
106681
E
Idaho
All-Time Minimum Temperature
-60
degrees F
19430118
19430118
Island Park Dam
104598
E
Idaho
All-Time Greatest 24-Hour Precipitation
7.17
inches
19091123
19091123
Rattlesnake Creek
107545
E
Idaho
All-Time Maximum 24-Hour Snowfall
31
inches
19671218
19671218
Anderson Dam
100282
N
Idaho
All-Time Maximum Snow Depth
182
inches
19540222
19540222
Mullan Pass VOR/DME
24154
N1
Idaho
All-Time Maximum Snow Depth
182
inches
19540220
19540220
Mullan Pass VOR/DME
24154
N1
Illinois
All-Time Maximum Temperature
117
degrees F
19540714
19540714
East St. Louis
112614
E
Illinois
All-Time Minimum Temperature
-38
degrees F
20190131
20190131
Mt. Carroll
115901
NS
This value exceeded the previous record of -36 degrees F, observed at Congerville on 5 January 1999.
Illinois
All-Time Greatest 24-Hour Precipitation
16.91
inches
19960718
19960718
Aurora
110338
E
Illinois
All-Time Maximum 24-Hour Snowfall
36
inches
19000228
19000228
Astoria
110291
N
Illinois
All-Time Maximum Snow Depth
41
inches
19790131
19790131
Gebhard Woods St.Pk.
113369
N1
Illinois
All-Time Maximum Snow Depth
41
inches
19000228
19000228
Astoria
110291
N1
Illinois
Hail: Diameter
4.75
inches
20150610
20150610
2 mi NNW of Minooka
SA
Indiana
All-Time Maximum Temperature
116
degrees F
19360714
19360714
Collegeville (South side of Renssalaer)
121719
E
Indiana
All-Time Minimum Temperature
-36
degrees F
19940119
19940119
New Whiteland
126304
E
Indiana
All-Time Greatest 24-Hour Precipitation
10.5
inches
19050806
19050806
Princeton
127125
E
Indiana
All-Time Maximum 24-Hour Snowfall
33
inches
20041223
20041223
Salem
127755
N
Indiana
All-Time Maximum Snow Depth
47
inches
19180128
19180128
Hammond
123650
N
Iowa
All-Time Maximum Temperature
118
degrees F
19340720
19340720
Keokuk No. 2
134372
EA
The value of 118 degrees F is confirmed as a valid observation, but the station sits on a bluff above the river and the observation is characteristic more of the local microclimate than the area climate. If this value is in doubt, the next highest value is 117 degrees F on July 25, 1936 at both Logan and Atlantic.
Iowa
All-Time Minimum Temperature
-47
degrees F
19960203
19960203
Elkader
132603
E1
Iowa
All-Time Minimum Temperature
-47
degrees F
19120112
19120112
Washta
138693
E1
Iowa
All-Time Greatest 24-Hour Precipitation
13.18
inches
19980614
19980614
Atlantic 1NE
130364
NA
Previously reported record of 16.70 inches in Decatur Co. on August 5-6, 1959 is likely valid, but was estimated from a post-event survey observation. A 13.52 inch observation was made at Atlantic 5SW on June 14, 1998, but it is likely that the observation covered more than a 24-hr period.
Iowa
All-Time Maximum 24-Hour Snowfall
24
inches
19180420
19180420
Lenox
134746
N
State climatologist reports a greater 24-hr snow fall that spanned 2 observational days.
Iowa
All-Time Maximum Snow Depth
52
inches
19690301
19690301
Lake Park
134561
E1
Iowa
All-Time Maximum Snow Depth
52
inches
19690228
19690228
Lake Park
134561
E1
Possible issues with reporting of snow depth at Lake Park. State climatologist is investigating.
Kansas
All-Time Maximum Temperature
121
degrees F
19360724
19360724
Alton
140201
E1
Kansas
All-Time Maximum Temperature
121
degrees F
19360718
19360718
Fredonia
142894
E1
Kansas
All-Time Minimum Temperature
-40
degrees F
19050213
19050213
Lebanon
144598
E
Kansas
All-Time Greatest 24-Hour Precipitation
inches
Under Review
The previously posted value of 13.53\" was discovered to be in error. An investigation to determine the legitimate record is underway.
Kansas
Maximum Annual Precipitation Total
75.33
inches
20190101
20191231
Farlington 0.8 NNE
CoCoRaHS KS-CR-10
NS
Kansas
All-Time Maximum 24-Hour Snowfall
30
inches
20090328
20090328
Pratt
146549
NSA
The 30.0 inches observed at Pratt in 2009 was formally evaluated by the State Climate Extremes Committee.
Kansas
All-Time Maximum Snow Depth
40
inches
19181231
19181231
Syracuse
148038
N
Kansas
Hail: Weight
1.65
pounds
19700903
19700903
Coffeyville
EA
The Coffeyville hailstone held the record for the nation's largest hailstone until June 22, 2003, when the record was eclipsed by a hailstone that fell near Aurora, Nebraska. It also held the U.S. record for all-time heaviest hailstone until July 23, 2010 when a heavier hailstone fell in Vivian, SD.
Kansas
Hail: Circumference
17.6
inches
19700903
19700903
Coffeyville
EA
The Coffeyville hailstone held the record for the nation's largest hailstone until June 22, 2003, when the record was eclipsed by a hailstone that fell near Aurora, Nebraska. It also held the U.S. record for all-time heaviest hailstone until July 23, 2010 when a heavier hailstone fell in Vivian, SD.
Kansas
Hail: Diameter
7.75
inches
20100915
20100915
Wichita
NSA
The Wichita hailstone would have set the National record for diameter but for the the record for the Vivian, SD hailstone that fell two months prior.
Kentucky
All-Time Maximum Temperature
114
degrees F
19300728
19300728
Greensburg
153430
E
Kentucky
All-Time Minimum Temperature
-37
degrees F
19940119
19940119
Shelbyville
157324
E
Kentucky
All-Time Greatest 24-Hour Precipitation
11.28
inches
20230718
20230719
Mayfield 6SW
KY Mesonet - PRYB
NSA
The previous record of 10.48 inches set back on March 1, 1997 in Louisville was determined to be a calendar-day record rather than a 24-hour record. The 24-hour record should have been 10.50 inches from 1AM CST March 1 to 1AM CST March 2, 1997 from the same event in Louisville. This new record value of 11.28 inches from Mayfield exceeds both values.
Kentucky
All-Time Maximum 24-Hour Snowfall
26
inches
19420303
19420303
Simers
157396
N
Kentucky
All-Time Maximum Snow Depth
31
inches
19780120
19780120
La Grange
154595
E
Kentucky
Maximum Wind Gust
120.1
mph
20211210
20211210
Princeton 2 SE
Kentucky Mesonet
SA
An EF-4 tornado caused extensive damage along a 163-mile long path in western Kentucky on December 10, 2021. Two Kentucky Mesonet sites were situated along the path of the tornado with one station measuring a wind gust of 120.1 mph, exceeding the previous record of 100.8 mph set at Kentucky Mesonet station Murray 1W (MRRY) on April 26, 2011.
Louisiana
All-Time Maximum Temperature
114
degrees F
19360810
19360810
Plain Dealing 4W
167344
E
Louisiana
All-Time Minimum Temperature
-16
degrees F
18990213
18990213
Minden
166244
E
Louisiana
All-Time Greatest 24-Hour Precipitation
22
inches
19620828
19620829
Hackberry
163979
E
Louisiana
All-Time Maximum 24-Hour Snowfall
13
inches
19600213
19600213
Colfax
161941
NA
The 13.0 inches observed at Colfax on February 13, 1960 is the greatest 24-hr snowfall that could be confirmed for Louisiana. It is likely that higher 24-hr amounts fell during the Valentine's Day blizzard of February 13-15, 1895 (in which storm totals of 14 to 24 inches were prevalent from Galveston, TX to Lake Charles, LA) as well as the blizzard of December 21-22, 1929. However, all reported snow falls from these events appear to be accumulated amounts from which daily totals cannot be reliably extracted.
Louisiana
All-Time Maximum Snow Depth
24
inches
18950215
18950215
Rayne
167678
N
Maine
All-Time Maximum Temperature
105
degrees F
19110710
19110710
North Bridgton
175875
E1
Maine
All-Time Maximum Temperature
105
degrees F
19110704
19110704
North Bridgton
175875
E1
Maine
All-Time Minimum Temperature
-50
degrees F
20090116
20090116
Big Black River (nr. Saint Pamphile, PQ)
USGS BBRM1
NS
The record minimum temperature of -50 degrees F was observed by an automated observing station operated by the US Geological Survey (USGS) at a river gage on the Big Black River near the Canadian border. The data are archived by the USGS, and the validity of the observation was confirmed by the State Climate Extremes Committee. The value also ties observations in NH and VT for the coldest temperature recorded for the Northeast region of the United States.
Maine
All-Time Greatest 24-Hour Precipitation
13.32
inches
19961020
19961021
Portland
14764
E
Maine
All-Time Maximum 24-Hour Snowfall
40
inches
19621230
19621230
Orono
176430
N
Maine
All-Time Maximum Snow Depth
84
inches
19690228
19690228
Farmington
172765
E
Maryland
All-Time Maximum Temperature
109
degrees F
19360710
19360710
Cumberland
182280
E3
Maryland
All-Time Maximum Temperature
109
degrees F
19360710
19360710
Frederick
183348
E3
Maryland
All-Time Maximum Temperature
109
degrees F
19180807
19180807
Cumberland
182280
E3
Maryland
All-Time Maximum Temperature
109
degrees F
19180806
19180806
Cumberland
182280
E3
Maryland
All-Time Maximum Temperature
109
degrees F
19180806
19180806
Keedysville
184780
E3
Maryland
All-Time Maximum Temperature
109
degrees F
18980703
18980703
Boettcherville
180960
E3
Maryland
All-Time Minimum Temperature
-40
degrees F
19120113
19120113
Oakland
186620
E
Maryland
All-Time Greatest 24-Hour Precipitation
14.75
inches
18970726
18970727
Jewell (nr. Friendship)
184650
E
Maryland
Maximum Annual Precipitation Total
84.56
inches
20180101
20181231
Catonsville 1.2 NW
CoCoRaHS MD-BL-39
NS
Maryland
All-Time Maximum 24-Hour Snowfall
31
inches
19420329
19420329
Clear Spring 1ENE
181890
E
Maryland
All-Time Maximum Snow Depth
54
inches
19930315
19930315
Frostburg 2
183415
E
Massachusetts
All-Time Maximum Temperature
107
degrees F
19750802
19750802
Chester
191430
E2
Massachusetts
All-Time Maximum Temperature
107
degrees F
19750802
19750802
New Bedford
195246
E2
Massachusetts
All-Time Minimum Temperature
-35
degrees F
19810112
19810112
Chester
191430
E1
Massachusetts
All-Time Minimum Temperature
-35
degrees F
19430215
19430215
Coldbrook
191589
E1
Massachusetts
All-Time Minimum Temperature
-35
degrees F
19040105
19040105
Taunton
198367
E1
Massachusetts
All-Time Greatest 24-Hour Precipitation
18.15
inches
19550818
19550819
Westfield
199191
E
Massachusetts
All-Time Maximum 24-Hour Snowfall
29
inches
19970401
19970401
Natick
195175
E
Massachusetts
All-Time Maximum Snow Depth
62
inches
19960113
19960113
Great Barrington Airport
193208
E
Michigan
All-Time Maximum Temperature
112
degrees F
19360713
19360713
Mio
205531
E2
Michigan
All-Time Maximum Temperature
112
degrees F
19360713
19360713
Stanwood
207834
E2
Michigan
All-Time Minimum Temperature
-51
degrees F
19340209
19340209
Vanderbilt
208417
E
Michigan
All-Time Greatest 24-Hour Precipitation
12.92
inches
20190720
20190720
6E Fountain
N/A
NSA
The 2019 value replaced the previous record of 9.78 inches, set at Bloomingdale on 31 August 1914. View the report associated with this investigation.
Michigan
All-Time Maximum 24-Hour Snowfall
32
inches
19851202
19851202
Herman
203744
N
Michigan
All-Time Maximum Snow Depth
117
inches
19480131
19480131
Eagle Harbor
202332
N1
Michigan
All-Time Maximum Snow Depth
117
inches
19480130
19480130
Eagle Harbor
202332
N1
Michigan
All-Time Maximum Snow Depth
117
inches
19480129
19480129
Eagle Harbor
202332
N1
Michigan
All-Time Maximum Snow Depth
117
inches
19480128
19480128
Eagle Harbor
202332
N1
Michigan
All-Time Maximum Snow Depth
117
inches
19480127
19480127
Eagle Harbor
202332
N1
Minnesota
All-Time Maximum Temperature
115
degrees F
19170729
19170729
Beardsley
210541
N1A
The previously reported record of 114 degrees F was reported by observer at Moorhead on 7\/6\/1936 as 113.6 degrees F (unlikely to be accurate given the 1-degree precision of the mercury in glass thermometer in use at the time), and rounded to 114 degrees F. The extreme reported above for Beardsley was observed as 114.5 degrees F and has been rounded to 115 degrees F per current rounding practices.
Minnesota
All-Time Minimum Temperature
-60
degrees F
19960202
19960202
Tower
218311
E
Minnesota
All-Time Greatest 24-Hour Precipitation
15.1
inches
20070819
20070819
Hokah 1S
213808
NS
Minnesota
All-Time Maximum 24-Hour Snowfall
36
inches
19940107
19940107
Wolf Ridge ELC
219134
E
Minnesota
All-Time Maximum Snow Depth
88
inches
19690221
19690221
Meadowlands 1NNW
215298
E1
Minnesota
All-Time Maximum Snow Depth
88
inches
19690220
19690220
Meadowlands 1NNW
215298
E1
Minnesota
All-Time Maximum Snow Depth
88
inches
19690219
19690219
Meadowlands 1NNW
215298
E1
Minnesota
All-Time Maximum Snow Depth
88
inches
19690218
19690218
Meadowlands 1NNW
215298
E1
Minnesota
All-Time Maximum Snow Depth
88
inches
19690217
19690217
Meadowlands 1NNW
215298
E1
Minnesota
All-Time Maximum Snow Depth
88
inches
19690216
19690216
Meadowlands 1NNW
215298
E1
Minnesota
All-Time Maximum Snow Depth
88
inches
19690215
19690215
Meadowlands 1NNW
215298
E1
Mississippi
All-Time Maximum Temperature
115
degrees F
19300729
19300729
Holly Springs 2N
224168
E
Mississippi
All-Time Minimum Temperature
-19
degrees F
19660130
19660130
Corinth
221962
E
Mississippi
All-Time Greatest 24-Hour Precipitation
15.68
inches
19680709
19680709
Columbus
221870
E
Mississippi
All-Time Maximum 24-Hour Snowfall
18
inches
19631223
19631223
Mt. Pleasant
226084
N2
Mississippi
All-Time Maximum 24-Hour Snowfall
18
inches
19631223
19631223
Mt. Tunica 2
228998
N2
Mississippi
All-Time Maximum Snow Depth
18
inches
19631223
19631223
Mount Pleasant
226084
N
Missouri
All-Time Maximum Temperature
118
degrees F
19540714
19540714
Union
238515
E3
Missouri
All-Time Maximum Temperature
118
degrees F
19540714
19540714
Warsaw
238733
E3
Missouri
All-Time Minimum Temperature
-40
degrees F
19050213
19050213
Warsaw
238733
E
Missouri
All-Time Greatest 24-Hour Precipitation
18.18
inches
19650720
19650720
Edgerton
232474
E
Missouri
All-Time Maximum 24-Hour Snowfall
24
inches
19790225
19790225
Cape Girardeau
03935
N3
Missouri
All-Time Maximum 24-Hour Snowfall
24
inches
19790225
19790225
Jackson
234226
N3
Missouri
All-Time Maximum Snow Depth
36
inches
19600320
19600320
Union
238515
E1
Missouri
All-Time Maximum Snow Depth
36
inches
19600319
19600319
Union
238515
E1
Montana
All-Time Maximum Temperature
117
degrees F
19370705
19370705
Medicine Lake
245572
E1
Montana
All-Time Maximum Temperature
117
degrees F
18930720
18930720
Glendive
243581
E1
Montana
All-Time Minimum Temperature
-70
degrees F
19540120
19540120
Rogers Pass
247156
E
Montana
All-Time Greatest 24-Hour Precipitation
11.5
inches
19210620
19210620
Circle (Springbrook)
247796
E
Montana
All-Time Maximum 24-Hour Snowfall
48
inches
20031227
20031227
Millegan 14SE
245712
E1
Montana
All-Time Maximum 24-Hour Snowfall
48
inches
19820529
19820529
Shonkin 7S 14SE
247540
E1
Montana
All-Time Maximum Snow Depth
147
inches
19750218
19750218
Summit
247978
E
Nebraska
All-Time Maximum Temperature
118
degrees F
19360724
19360724
Minden
255565
E1
Nebraska
All-Time Maximum Temperature
118
degrees F
19360717
19360717
Hartington
253630
E1
Nebraska
All-Time Maximum Temperature
118
degrees F
19340715
19340715
Geneva
253175
E1
Nebraska
All-Time Minimum Temperature
-47
degrees F
19891222
19891222
Oshkosh
256385
E1
Nebraska
All-Time Minimum Temperature
-47
degrees F
18990212
18990212
Bridgeport
251145
E1
Nebraska
All-Time Greatest 24-Hour Precipitation
13.15
inches
19500708
19500709
York
259510
E
Nebraska
All-Time Maximum 24-Hour Snowfall
27
inches
20061221
20061221
Dalton
252145
N
Nebraska
All-Time Maximum Snow Depth
44
inches
19360216
19360216
Fremont
253050
N
Nebraska
Hail: Weight
1.34
pounds
20030622
20030622
Aurora
EA
The Aurora hailstone holds the title of the largest circumference hail stone observed to have fallen in the United States. The Vivian, SD hailstone of 7\/23\/2010 is the largest in diameter and in weight. The weight listed here for the Aurora hail stone is the weight of the fractured remnant of the stone (Knight and Knight, 2005) and thus is likely a sizable underestimate of the true stone weight.
Nebraska
Hail: Circumference
18.75
inches
20030622
20030622
Aurora
EA
The Aurora hailstone holds the title of the largest circumference hail stone observed to have fallen in the United States. The Vivian, SD hailstone of 7\/23\/2010 is the largest in diameter and in weight. The weight listed here for the Aurora hail stone is the weight of the fractured remnant of the stone (Knight and Knight, 2005) and thus is likely a sizable underestimate of the true stone weight.
Nebraska
Hail: Diameter
7
inches
20030622
20030622
Aurora
EA
The Aurora hailstone holds the title of the largest circumference hail stone observed to have fallen in the United States. The Vivian, SD hailstone of 7\/23\/2010 is the largest in diameter and in weight. The weight listed here for the Aurora hail stone is the weight of the fractured remnant of the stone (Knight and Knight, 2005) and thus is likely a sizable underestimate of the true stone weight.
Nevada
All-Time Maximum Temperature
125
degrees F
19940629
19940629
Laughlin
264480
E
Nevada
All-Time Minimum Temperature
-50
degrees F
19370108
19370108
San Jacinto
267284
E
Nevada
All-Time Greatest 24-Hour Precipitation
7.78
inches
20041020
20041020
Mount Charleston
265400
N
Nevada
All-Time Maximum 24-Hour Snowfall
36
inches
19961221
19961221
Dagget Pass
262119
N
Nevada
All-Time Maximum Snow Depth
271
inches
19110313
19110313
Spooners Station
267710
N1
Nevada
All-Time Maximum Snow Depth
271
inches
19110312
19110312
Spooners Station
267710
N1
New Hampshire
All-Time Maximum Temperature
106
degrees F
19110704
19110704
Nashua
275712
E
New Hampshire
All-Time Minimum Temperature
-50
degrees F
18850122
18850122
Mount Washington
14755
NA
Value of -50 degrees F exceeds the previously reported all-time minimum temperature extreme of -46 on 1\/8\/1968. The -50 degrees F is not yet present in NCDC's digital data files but exists on observation forms and publications in NCDC archives. The value ties with Vermont and Maine for coldest temperature recorded in the Northeast region of the United States.
New Hampshire
All-Time Greatest 24-Hour Precipitation
11.07
inches
19961020
19961021
Mount Washington
14755
N
New Hampshire
All-Time Maximum 24-Hour Snowfall
49.3
inches
19690225
19690225
Mount Washington
14755
N
New Hampshire
All-Time Maximum Snow Depth
164
inches
19690227
19690227
Pinkham Notch
276818
N
New Jersey
All-Time Maximum Temperature
110
degrees F
19360710
19360710
Runyon
287825
E
New Jersey
All-Time Minimum Temperature
-34
degrees F
19040105
19040105
River Vale
287620
E
New Jersey
All-Time Greatest 24-Hour Precipitation
14.81
inches
19390819
19390820
Tuckerton
288899
E
New Jersey
Maximum Annual Precipitation Total
90.65
inches
20110101
20111231
WEST MILFORD TWP 3.2 NE
CoCoRaHS NJ-PS-16
NA
This record value was initially evaluated and scientifically validated by the SCEC in 2012. The non-archival status of the station's network was a concern at the time, delaying the approval. This concern is now moot, as the observing system is ingested into a permanent Federal archive.
New Jersey
All-Time Maximum 24-Hour Snowfall
29.7
inches
19471226
19471227
Long Branch
284987
NSA
The previous record of 32 inches, reported at Charlotteburg Reservoir (COOP ID: 287332) on 14 December 1915, was determined to have fallen during a span of time exceeding 24 hours, per notes indicated on the observer form, and was subsequently invalidated and replaced by the next-largest known 24-hour snowfall value located in Long Branch.
New Jersey
All-Time Maximum Snow Depth
52
inches
19610205
19610205
Canistear Reservoir
281327
E
New Mexico
All-Time Maximum Temperature
122
degrees F
19940627
19940627
Waste Isolation Pilot Plant (nr. Loving)
299569
E
New Mexico
All-Time Minimum Temperature
-50
degrees F
19510201
19510201
Gavilan
293505
E
New Mexico
All-Time Greatest 24-Hour Precipitation
11.28
inches
19550518
19550519
Lake Maloya
294742
E
New Mexico
All-Time Maximum 24-Hour Snowfall
41
inches
19640203
19640203
Kelly Ranch
294461
N
New Mexico
All-Time Maximum Snow Depth
96
inches
19410315
19410315
Lee's Ranch
294903
N
New York
All-Time Maximum Temperature
108
degrees F
19260722
19260722
Troy
308597
E
New York
All-Time Minimum Temperature
-52
degrees F
19790218
19790218
Old Forge
306184
E1
New York
All-Time Greatest 24-Hour Precipitation
13.57
inches
20140812
20140813
Long Island MacArthur Airport
04781
New York
All-Time Maximum 24-Hour Snowfall
50
inches
19660201
19660201
Camden
301110
NA
An unofficial but widely accepted 24-hr snow fall observation of 54 inches was recorded at Barnes Corner (Tug Hill Plateau) in January 1976. In February 2020, the 50-inch value at Camden in 1966, already present in the record, but flagged as invalid, was determined by the SCEC to be valid. It was established as the record, replacing the previously accepted record of 49 inches, at Watertown on 14-15 November 1900. View the report from the associated investigation. In November 2022, significant and persistent lake effect snowfall impacted several areas east of lakes Erie and Ontario, but no new record was determined. A report was released to highlight the details from this investigation.
New York
All-Time Maximum Snow Depth
119
inches
19430420
19430420
Whiteface Mountain
309383
N
A snow depth value of 130 inches at Richland on 5 March 1947 was reviewed and rejected as a potential record. View the report associated with this investigation.
North Carolina
All-Time Maximum Temperature
110
degrees F
19830821
19830821
Fayetteville
93740
E
North Carolina
All-Time Minimum Temperature
-34
degrees F
19850121
19850121
Mount Mitchell
315923
E
North Carolina
All-Time Greatest 24-Hour Precipitation
22.22
inches
19160715
19160716
Altapass
310160
E
North Carolina
Maximum Annual Precipitation Total
139.94
inches
20180101
20181231
Mt. Mitchell
315923
NS
North Carolina
All-Time Maximum 24-Hour Snowfall
36
inches
19930313
19930313
Mt. Mitchell
315923
N
In May 2016, the SCEC considered a reported 41-inch snowfall event observed in January 2016 at Mt. Mitchell (GHCN-D identifier USC00315923). The value was determined to be invalid, and the existing record of 36 inches set in March 1993 was thereby upheld.
North Carolina
All-Time Maximum Snow Depth
50
inches
19930314
19930314
Mount Mitchell
315923
N1
North Carolina
All-Time Maximum Snow Depth
50
inches
19420306
19420306
Mount Mitchell
315921
N1
North Carolina
All-Time Maximum Snow Depth
50
inches
19420305
19420305
Mount Mitchell
315921
N1
North Carolina
All-Time Maximum Snow Depth
50
inches
19420304
19420304
Mount Mitchell
315921
N1
North Carolina
All-Time Maximum Snow Depth
50
inches
19420303
19420303
Mount Mitchell
315921
N1
North Dakota
All-Time Maximum Temperature
121
degrees F
19360706
19360706
Steele
328366
E
North Dakota
All-Time Minimum Temperature
-60
degrees F
19360215
19360215
Parshall
326867
E
North Dakota
All-Time Greatest 24-Hour Precipitation
8.1
inches
19750629
19750629
Litchville
325230
E
North Dakota
All-Time Maximum 24-Hour Snowfall
27
inches
19840427
19840427
Minot Airport
24013
N
North Dakota
All-Time Maximum Snow Depth
65
inches
18970312
18970312
Berlin
320720
N1
North Dakota
All-Time Maximum Snow Depth
65
inches
18970311
18970311
Berlin
320720
N1
Ohio
All-Time Maximum Temperature
113
degrees F
19340721
19340721
Gallipolis (near)
333029
E
Ohio
All-Time Minimum Temperature
-39
degrees F
18990210
18990210
Milligan
335310
E
Ohio
All-Time Greatest 24-Hour Precipitation
10.75
inches
19950807
19950808
Lockington Dam (nr. Sidney, Shelby Co. OH)
EA
Value is published in the August 1995 Storm Data publication and is from a reliable gauge. Higher 24-hr amounts may have occurred in conjunction with a line of severe storms that impacted Northwest Ohio on July 4-5, 1969.
Ohio
All-Time Maximum 24-Hour Snowfall
30
inches
19010420
19010420
Warren 3S
338769
N
Ohio
All-Time Maximum Snow Depth
47
inches
19961114
19961114
Chardon
331458
N
Oklahoma
All-Time Maximum Temperature
120
degrees F
19360812
19360812
Altus
340179
E1A
Oklahoma
All-Time Maximum Temperature
120
degrees F
19360810
19360810
Poteau
347246
E1A
Oklahoma
All-Time Maximum Temperature
120
degrees F
19360719
19360719
Altus
340179
E1A
Oklahoma
All-Time Maximum Temperature
120
degrees F
19360718
19360718
Alva
340193
E1A
A 120 degrees F observed at Tipton observed by an Oklahoma Mesonet automated weather station on June 27, 1994 was originally approved. However, this value was later withdrawn after problems with the instrumentation configuration were discovered several years later.
Oklahoma
All-Time Minimum Temperature
-31
degrees F
20110210
20110210
Nowata
NOWA (OK Mesonet)
NSA
Oklahoma
All-Time Greatest 24-Hour Precipitation
15.68
inches
19731011
19731011
Enid
342912
E
Oklahoma
All-Time Maximum 24-Hour Snowfall
27
inches
20110209
20110210
Spavinaw
348380
NSA
The 24-hr snow fall at Woodward and Freedom fell in conjunction with a spring blizzard that set snow fall records in Oklahoma, Kansas and Texas. The State Climate Extremes Committee verified the validity of the observations at Woodward and Freedom.
Oklahoma
All-Time Maximum Snow Depth
36
inches
19710222
19710222
Buffalo 2SSW
341243
N
Oklahoma
Hail: Diameter
6
inches
20110523
20110523
2 mi. N of Gotebo
NSA
The state hailstone record is understood to be the largest documented stone, though larger stones have likely fallen during territorial and state history. Other reports from prior dates did not provide sufficient documentary evidence.
Oklahoma
Maximum Wind Gust
150.8
mph
20110524
20110524
El Reno
ELRE (OK Mesonet)
NSA
Oregon
All-Time Maximum Temperature
119
degrees F
20210629
20210629
Moody Farms Agrimet
USBR Mesonet
SA
A heat wave across the Pacific Northwest in late June 2021 broke a number of daily maximum temperature records. In addition, an Oregon SCEC determined that two reliable stations, Pelton Dam (COOP ID: 356532) and a U.S. Bureau of Reclamation mesonet station, Moody Farms Agriment, each tied the state maximum temperature record of 119 degrees F.. In February 2022, the Prineville, OR, (COOP ID: 356883) value of 119 degrees F, that occurred on July 29, 1898, was invalidated and removed from the SCEC records table.
Oregon
All-Time Maximum Temperature
119
degrees F
20210629
20210629
Pelton Dam
356532
SA
A heat wave across the Pacific Northwest in late June 2021 broke a number of daily maximum temperature records. In addition, an Oregon SCEC determined that two reliable stations, Pelton Dam (COOP ID: 356532) and a U.S. Bureau of Reclamation mesonet station, Moody Farms Agriment, each tied the state maximum temperature record of 119 degrees F.. In February 2022, the Prineville, OR, (COOP ID: 356883) value of 119 degrees F, that occurred on July 29, 1898, was invalidated and removed from the SCEC records table.
Oregon
All-Time Maximum Temperature
119
degrees F
18980810
18980810
Pendleton
356541
E1
Oregon
All-Time Minimum Temperature
-54
degrees F
19330210
19330210
Seneca
357675
E1
Oregon
All-Time Minimum Temperature
-54
degrees F
19330209
19330209
Ukiah
358726
E1
Oregon
All-Time Greatest 24-Hour Precipitation
11.77
inches
20061106
20061106
Nehalem 9NE
355971
N
Oregon
All-Time Maximum 24-Hour Snowfall
47
inches
19800109
19800109
Hood River ES
354003
N
Oregon
All-Time Maximum Snow Depth
252
inches
19830403
19830403
Crater Lake NP HQ
351946
N
Pennsylvania
All-Time Maximum Temperature
111
degrees F
19360710
19360710
Phoenixville
366927
E1
Pennsylvania
All-Time Maximum Temperature
111
degrees F
19360709
19360709
Phoenixville
366927
E1
Pennsylvania
All-Time Minimum Temperature
-42
degrees F
19040105
19040105
Smethport
368190
E
Pennsylvania
All-Time Greatest 24-Hour Precipitation
13.5
inches
19720622
19720622
York 3SSW Pump Stn
369933
NA
Arguably the greatest 24-hour rainfall on record outside of the tropics occurred around Smethport, PA on July 17, 1942. A post-event survey by the Weather Bureau provided a widely accepted maximum storm rainfall of 34.50 inches within a 12 hour period, of which an estimated 30.60 inches fell in just 6 hours. However, the greatest observed 24-hr rain fall for Pennsylvania occurred in conjunction with Hurricane Agnes in 1972.
Pennsylvania
All-Time Maximum 24-Hour Snowfall
41
inches
19580215
19580216
Lakeville 1NNE
364733
NSA
Lakeville 1NNE was the official name for this station when the record was set during 1958. The name of the station when the record was identified in 2021 was Lakeville 2NNE, which is reflected in the station metadata. This Lakeville value replaced the previously reported record of 38 inches, set at Morgantown (COOP ID: 365956) on 20 March 1958. More details are available in the report associated with this investigation.
Pennsylvania
Monthly Maximum Snowfall
117.8
inches
20100201
20100228
Laurel Summit
364839
NSA
A potential monthly snowfall record of 120.9 inches was reported for December 2017 at Erie International Airport. This value was examined by the SCEC during the following year. The SCEC found that observational practices associated with the Erie total reduced confidence in the value. The SCEC determined by a 4-1 vote that the existing Laurel Summit record be upheld.View Erie Dec 2017 reportView Laurel Summit Feb 2010 report
Pennsylvania
All-Time Maximum Snow Depth
60
inches
19580323
19580323
Gouldsboro
363394
N1
Pennsylvania
All-Time Maximum Snow Depth
60
inches
19580322
19580322
Gouldsboro
363394
N1
Puerto Rico
All-Time Maximum Temperature
104
degrees F
19960702
19960702
Mona Island
666258
NA
Listed record value of 104 degrees F is being reviewed. If found to be invalid, the next highest temperature is 100 degrees F on August 21, 2003 at Ponce 4E.
Puerto Rico
All-Time Minimum Temperature
40
degrees F
19850327
19850327
Rincon
668126
N1
Puerto Rico
All-Time Minimum Temperature
40
degrees F
19660124
19660124
San Sebastian
668881
N1
Puerto Rico
All-Time Minimum Temperature
40
degrees F
19110309
19110309
Aibonito
660158
N1
Puerto Rico
All-Time Greatest 24-Hour Precipitation
23.75
inches
19851007
19851007
Toro Negro Forest
669432
NA
Value was observed during the passage of Tropical Storm Isabel (October 4-8, 1985).
Puerto Rico
All-Time Maximum 24-Hour Snowfall
inches
N/A
E
Puerto Rico
All-Time Maximum Snow Depth
inches
N/A
E
Rhode Island
All-Time Maximum Temperature
104
degrees F
19750802
19750802
Providence
14765
E
Rhode Island
All-Time Minimum Temperature
-28
degrees F
19420111
19420111
Wood River Junction
379327
NA
Previously reported record of -25 degrees F at Greene on February 5, 1996 could not be verified. Source is unknown and no documentation could be found. Value is exceeded by the currently reported record at Wood River Junction.
Rhode Island
All-Time Greatest 24-Hour Precipitation
12.13
inches
19320916
19320917
Westerly
378911
E
Rhode Island
All-Time Maximum 24-Hour Snowfall
30
inches
19780207
19780207
Woonsocket
379423
E
Rhode Island
All-Time Maximum Snow Depth
42
inches
19780207
19780207
North Foster 1E
375270
E
South Carolina
All-Time Maximum Temperature
113
degrees F
20120629
20120629
Columbia Univ of South Carolina
381944
NS
South Carolina
All-Time Minimum Temperature
-19
degrees F
19850121
19850121
Caesar's Head
381256
E
South Carolina
All-Time Greatest 24-Hour Precipitation
14.8
inches
19990916
19990916
Myrtle Beach
386153
NA
Previously listed record of 17.00 inches at Antreville on Augst 27, 1995 (Tropical Storm Jerry) was incongruent with other observations in the area, and all reliable evidence pointed to a much smaller 24-hr value. The 14.80 inches observed at Myrtle Beach on September 16, 1999 is a result of Hurricane Floyd.
South Carolina
Maximum Annual Precipitation Total
123.45
inches
20180101
20181231
Jocassee 8 NW
384581
NSA
An annual value of 125.62 inches for the calendar year 2018 was reported by the Greenville Water Company. This annual value was considered plausible by the SCEC. However, the station was not at the time a member of an organized and reporting observation network, and therefore not considered for the record. View the associated report.
South Carolina
All-Time Maximum 24-Hour Snowfall
24
inches
19730209
19730210
Rimini 2SSW
387313
N
South Carolina
All-Time Maximum Snow Depth
29
inches
19690218
19690218
Ceasars Head
381256
N
South Dakota
All-Time Maximum Temperature
120
degrees F
20060715
20060715
Fort Pierre
393076
N1
South Dakota
All-Time Maximum Temperature
120
degrees F
19360705
19360705
Gann Valley
393217
N1
South Dakota
All-Time Minimum Temperature
-58
degrees F
19360217
19360217
McIntosh
395381
E
South Dakota
All-Time Greatest 24-Hour Precipitation
8.74
inches
20070506
20070506
Groton
393456
NSA
The reported value was evaluated by the State Climate Extremes Committee. Greater amounts have fallen in 24 hours or less across SD, but were not observed by reliable precipitation measurement gauges. A survey after the June 9, 1972 Black Hills flood indicated rainfall up to 15 inches in 6 hours may have occurred near Keystone. On June 13-14, 1976 up to 10 inches of rain may have fallen over the Black Hills, while on June 14, 1996 a near-stationary thunderstorm produced an estimated 14 inches of rain between Sturgis and Hereford. On August 17, 2007 an estimated 10.5 inches of rain fell west of Hermosa. Slow moving thunderstorms on May 8, 2018 produced large storm totals across parts of SD including an unofficial 24-hour report measuring 13.15 inches northwest of Long Lake.
South Dakota
All-Time Maximum 24-Hour Snowfall
52
inches
19730314
19730314
Lead
394834
N
South Dakota
All-Time Maximum Snow Depth
73
inches
19980301
19980301
Lead
394834
E
South Dakota
Hail: Weight
1.938
pounds
20100723
20100723
Vivian
A
The reported value has been evaluated by the National Climate Extremes Committee and found to be accurate. This hail stone is the heaviest and greatest diameter stone on record for the United States. When initially collected after the storm, the stone had a reported diameter of 11 inches, but deteriorated in the observer's freezer owing to a loss of power after the storm. The Aurora, NE hail stone remains the largest circumference stone on record for the United States.
South Dakota
Hail: Circumference
18.625
inches
20100723
20100723
Vivian
A
The reported value has been evaluated by the National Climate Extremes Committee and found to be accurate. This hail stone is the heaviest and greatest diameter stone on record for the United States. When initially collected after the storm, the stone had a reported diameter of 11 inches, but deteriorated in the observer's freezer owing to a loss of power after the storm. The Aurora, NE hail stone remains the largest circumference stone on record for the United States.
South Dakota
Hail: Diameter
8
inches
20100723
20100723
Vivian
A
The reported value has been evaluated by the National Climate Extremes Committee and found to be accurate. This hail stone is the heaviest and greatest diameter stone on record for the United States. When initially collected after the storm, the stone had a reported diameter of 11 inches, but deteriorated in the observer's freezer owing to a loss of power after the storm. The Aurora, NE hail stone remains the largest circumference stone on record for the United States.
Tennessee
All-Time Maximum Temperature
113
degrees F
19300809
19300809
Perryville
407099
E1
Tennessee
All-Time Maximum Temperature
113
degrees F
19300729
19300729
Perryville
407099
E1
Tennessee
All-Time Minimum Temperature
-32
degrees F
19171230
19171230
Mountain City
406287
E
Tennessee
All-Time Greatest 24-Hour Precipitation
20.73
inches
20210821
20210821
McEwen
N/A
NSA
The 2021 value replaced the previous record of 13.60 inches, set at Milan (COOP ID: 406012) on 13 September 1982.
Tennessee
All-Time Maximum 24-Hour Snowfall
30
inches
19930314
19930314
Mount Leconte
406328
N
Tennessee
All-Time Maximum Snow Depth
63
inches
19930315
19930315
Mount Leconte
406328
N1
Tennessee
All-Time Maximum Snow Depth
63
inches
19930314
19930314
Mount Leconte
406328
N1
Texas
All-Time Maximum Temperature
120
degrees F
19940628
19940628
Monahans
415999
E1
Texas
All-Time Maximum Temperature
120
degrees F
19360812
19360812
Seymour
418221
E1
Texas
All-Time Minimum Temperature
-23
degrees F
19330208
19330208
Seminole
418201
E1
Texas
All-Time Minimum Temperature
-23
degrees F
18990212
18990212
Tulia 6NE
419176
SA1
Historical value at Tulia 6NE became available upon digitization and update of previously paper-bound data. It was examined retroactively, found, to be valid and tied the prior stated record.
Texas
All-Time Greatest 24-Hour Precipitation
42
inches
19790725
19790726
Alvin
EA
The 24-hour rainfall of 42.00 inches was reported from an observer 8.5 miles west of Alvin, Texas between 7 AM July 25th and 7 AM July 26th, 1979 in conjunction with Tropical Storm Claudette. Observer reported that the 10-inch gauge was overflowing at his 1 AM reading, and so the 42 inches may be underreported by at least 3 inches. This 42.00-in rainfall exceeds any observed 24-hr precipitation value for the United States. 43.00 inches of rain in this storm is acknowledged as the United States national record 24-hr precipitation amount, but that value appears to have been estimated in a post-storm survey and is therefore not listed here.
Texas
All-Time Maximum 24-Hour Snowfall
26
inches
19291220
19291221
Hillsboro
414182
NSA
Historical value was examined retroactively and found to be valid and exceeded prior stated record. The previously recognized record of 25\", observed in March 2009 at Follett (GHCN-D identifier USC00413225) is documented (here).
Texas
All-Time Maximum Snow Depth
33
inches
19560207
19560207
Vega 2NW
419330
N
Texas
Hail: Weight
1.26
pounds
20210428
20210428
1 SSW Hondo
N/A
SA
Texas
Hail: Circumference
19.73
inches
20210428
20210428
1 SSW Hondo
N/A
SA
Texas
Hail: Diameter
6.416
inches
20210428
20210428
1 SSW Hondo
N/A
SA
Texas
Hail: Volume
40.239
cubic inches
20210428
20210428
1 SSW Hondo
N/A
SA
Utah
All-Time Maximum Temperature
117
degrees F
20210710
20210710
St. George
427516
ESA
A 118 degrees F temperature was observed on July 4, 2007 at a Remote Automatic Weather Station (RAWS) located near the Utah Welcome Center on I-15 south of St. George. However, a decision on the validity of this value could not be determined by the State Climate Extremes Committee. View 2021 Record Report
Utah
All-Time Maximum Temperature
117
degrees F
19850705
19850705
St. George
427516
EA
A 118 degrees F temperature was observed on July 4, 2007 at a Remote Automatic Weather Station (RAWS) located near the Utah Welcome Center on I-15 south of St. George. However, a decision on the validity of this value could not be determined by the State Climate Extremes Committee. View 2021 Record Report
Utah
All-Time Minimum Temperature
-50
degrees F
19130105
19130105
Strawberry Tunnel (East)
422319
NA
The previously reported record of -69 degrees F set at Peters Sinks on Feb 1, 1985 is widely considered an accurate observation, but no information concerning the observation or the station could be identified, and the value is heavily affected by the local terrain. The -50 degrees F at Strawberry Tunnel is the coldest temperature observation that can be verified from publicly available observations at established observation stations in Utah.
Utah
All-Time Greatest 24-Hour Precipitation
5.08
inches
19630201
19630201
Deer Creek Dam
422057
NA
A value of 8.40 inches was reported as part of a post-flash flood survey conducted by the National Weather Service at North Odgen on September 7-8, 1991.
Utah
All-Time Maximum 24-Hour Snowfall
38
inches
19821202
19821202
Alta
420072
NA
55.5 inches of snow fall in 24 hours was reported at the Alta Guard Station in Alta, UT on January 5-6, 1991, but information concerning this observation or the station is unavailable and cannot be considered official.
Utah
All-Time Maximum Snow Depth
179
inches
19580407
19580407
Alta
420072
N1A
236 inches of snow depth were observed at the Collins snow study observation site at Alta, UT on May 19, 1983, but information concerning this observation or the station is unavailable and cannot be considered official.
Utah
All-Time Maximum Snow Depth
179
inches
19580405
19580405
Alta
420072
N1A
236 inches of snow depth were observed at the Collins snow study observation site at Alta, UT on May 19, 1983, but information concerning this observation or the station is unavailable and cannot be considered official.
Vermont
All-Time Maximum Temperature
107
degrees F
19120707
19120707
Vernon
438600
N
Vermont
All-Time Minimum Temperature
-50
degrees F
19331230
19331230
Bloomfield
430690
E
The -50 degrees F minimum temperature ties with values from NH and ME as the all-time coldest temperature for the Northeast region of the United States.
Vermont
All-Time Greatest 24-Hour Precipitation
9.92
inches
19990917
19990917
Mt. Mansfield
435416
N
Vermont
All-Time Maximum 24-Hour Snowfall
42
inches
19950205
19950205
Jay Peak
434189
N
Two potential 24-hour snowfall records of 44.8 inches at Peru (COOP ID: 436335) and 42.0 inches at Landgrove 1.1 NNE (CoCoRaHS ID: VT-BN-3) over a 24-hour period on 16-17 December 2020 were examined by the SCEC during the following year. The SCEC found that observational practices associated with the measurements reduced confidence in these values. The SCEC determined by two separate 5-0 votes that the existing Jay Peak record be upheld.
Vermont
All-Time Maximum Snow Depth
149
inches
19690402
19690402
Mt. Mansfield
435416
N
Vermont
Hail: Weight
0.13125
pounds
20090716
20090716
Westford
NSA
A large hailstone fell in the backyard of a National Weather Service employee and was brought before the State Climate Extremes Committee for review. After a search of historical hail reports, it was determined that the hail stone was the largest ever measured for the state of Vermont. As a result of this investigation, a set of hail collection and measurement guidelines was proposed by the State Climate Extremes Committee.
Vermont
Hail: Circumference
6.8
inches
20090716
20090716
Westford
NSA
A large hailstone fell in the backyard of a National Weather Service employee and was brought before the State Climate Extremes Committee for review. After a search of historical hail reports, it was determined that the hail stone was the largest ever measured for the state of Vermont. As a result of this investigation, a set of hail collection and measurement guidelines was proposed by the State Climate Extremes Committee.
Vermont
Hail: Diameter
3.3
inches
20090716
20090716
Westford
NSA
A large hailstone fell in the backyard of a National Weather Service employee and was brought before the State Climate Extremes Committee for review. After a search of historical hail reports, it was determined that the hail stone was the largest ever measured for the state of Vermont. As a result of this investigation, a set of hail collection and measurement guidelines was proposed by the State Climate Extremes Committee.
Virgin Islands (U.S.)
All-Time Maximum Temperature
99
degrees F
19960623
19960623
Charlotte Amalie (St. Thomas)
11640
N1A
Virgin Islands (U.S.)
All-Time Maximum Temperature
99
degrees F
19940804
19940804
Charlotte Amalie (St. Thomas)
11640
N1A
Virgin Islands (U.S.)
All-Time Maximum Temperature
99
degrees F
19880731
19880731
Cruz Bay (St. John)
671980
N1A
Virgin Islands (U.S.)
All-Time Minimum Temperature
51
degrees F
19540131
19540131
Anna's Hope (St. Croix)
670260
NA
Virgin Islands (U.S.)
All-Time Greatest 24-Hour Precipitation
20
inches
19790904
19790904
Anna's Hope (SC)
670260
NA
Virgin Islands (U.S.)
All-Time Maximum 24-Hour Snowfall
inches
N/A
EA
Virgin Islands (U.S.)
All-Time Maximum Snow Depth
inches
N/A
EA
Virginia
All-Time Maximum Temperature
110
degrees F
19540715
19540715
Balcony Falls
440411
E1
Virginia
All-Time Maximum Temperature
110
degrees F
19000707
19000707
Columbia
441929
E1
Virginia
All-Time Maximum Temperature
110
degrees F
19000705
19000705
Columbia
441929
E1
Virginia
All-Time Minimum Temperature
-30
degrees F
19850121
19850121
Mountain Lake Biological Station
445828
E
The date for the existing record of -30 degrees F at Mountain Lake Biological Station was incorrect by one day. Date listed is the correct observation date.
Virginia
All-Time Greatest 24-Hour Precipitation
14.28
inches
19990916
19990916
Williamsburg 2N
449151
NA
Storm Data (Vol. 11, No. 8) reports associated with Hurricane Camille (August 1969) indicate \"... substantiated amounts up to 31 inches ... falling mainly in Nelson and adjacent counties ....\" The 14.28 inches at Williamsburg fell in conjunction with Hurricane Floyd.
Virginia
Maximum Annual Precipitation Total
94.43
inches
20180101
20181231
Sperryville
447985
NSA
View the report associated with the Sperryville record. Before the Sperryville value came to light, two smaller annual totals that nevertheless exceeded the previously understood unofficial record were investigated. These were values of 89.90\" at Montebello Fish Hatchery and 87.33\" at Roanoke 5.8 SW (CoCoRaHS). These were determined not to be valid statewide precipitation records. A separate report detailing these values is available here.
Virginia
All-Time Maximum 24-Hour Snowfall
33.5
inches
19940303
19940303
Luray 5E
445096
E
Virginia
All-Time Maximum Snow Depth
47
inches
19960107
19960107
Big Meadows
440720
E
Washington
All-Time Maximum Temperature
120
degrees F
20210629
20210629
Hanford
DOE Mesonet H100F
NSA
A heat wave across the Pacific Northwest in late June 2021 broke a number of daily maximum temperature records. In addition, an Washington SCEC determined that a Department of Energy mesonet station, Hanford H100F, reached 120 degrees F, exceeding the previous record of 118 degrees F set at Ice Harbor Dam (COOP ID: 453993) on August 5, 1961 and Wahluke (COOP ID: 458903) on July 24, 1928.
Washington
All-Time Minimum Temperature
-48
degrees F
19681230
19681230
Mazama
455133
E2
Washington
All-Time Minimum Temperature
-48
degrees F
19681230
19681230
Winthrop
459376
E2
Washington
All-Time Greatest 24-Hour Precipitation
14.26
inches
19861123
19861124
Mt. Mitchell #2
455668
E
Washington
All-Time Maximum 24-Hour Snowfall
65
inches
19940224
19940224
Crystal Mountain Ski Resort
NWAC
NA
The observation of 65.0 inches of snow that fell in 24 hours at the Crystal Mountain ski resort on February 24, 1994 is archived at the Northwest Weather and Avalanche Center. The greatest 24-hr snow fall observed at an official NOAA weather station in Washington is 52.0 inches observed at Winthrop on January 21, 1935.
Washington
All-Time Maximum Snow Depth
367
inches
19560310
19560310
Rainier Paradise RS
456898
N1
Washington
All-Time Maximum Snow Depth
367
inches
19560309
19560309
Rainier Paradise RS
456898
N1
West Virginia
All-Time Maximum Temperature
112
degrees F
19360710
19360710
Martinsburg
13734
E1
West Virginia
All-Time Maximum Temperature
112
degrees F
19300804
19300804
Moorefield
466163
E1
West Virginia
All-Time Minimum Temperature
-37
degrees F
19171230
19171230
Lewisburg
465224
E
West Virginia
All-Time Greatest 24-Hour Precipitation
12.02
inches
19490618
19490618
Brushy Run
461204
NA
It is widely accepted that the greatest precipitation in a 24 hr period for West Virginia was an estimated 19.00 inches that reportedly fell in 2 hrs and 10 minutes on July 18, 1889 at Rockport during a cloudburst that caused Tygart Creek to rise 22 feet in one hour. However, this value has not been confirmed.
West Virginia
Maximum Annual Precipitation Total
96.99
inches
20180101
20181231
Parsons 3SE (Hendricks)
USC00466867
NS
West Virginia
All-Time Maximum 24-Hour Snowfall
35
inches
19980127
19980128
Flat Top
463072
NA
The 35.0 inches of snowfall reported at Flat Top fell from 10 AM on January 27th to 10 AM on January 28th, 1998. Observation-time values for each day are 30.0 and 8.0 inches, respectively.
West Virginia
Monthly Maximum Snowfall
158.2
inches
20100201
20100228
Bayard
460527
NA
West Virginia
All-Time Maximum Snow Depth
62
inches
19780308
19780308
Snowshoe
468308
N
Wisconsin
All-Time Maximum Temperature
114
degrees F
19360713
19360713
Wisconsin Dells
479319
E
Wisconsin
All-Time Minimum Temperature
-55
degrees F
19960204
19960204
Couderay
471847
E1
Wisconsin
All-Time Minimum Temperature
-55
degrees F
19960202
19960202
Couderay
471847
E1
Wisconsin
All-Time Greatest 24-Hour Precipitation
11.72
inches
19460624
19460624
Mellen
475286
E
Wisconsin
All-Time Maximum 24-Hour Snowfall
26
inches
19041226
19041227
Neillsville
475808
E
Wisconsin
All-Time Maximum Snow Depth
83
inches
19330406
19330406
Flambeau Reservoir
472814
N
Wyoming
All-Time Maximum Temperature
115
degrees F
19880715
19880715
Diversion Dam
482595
N1
Wyoming
All-Time Maximum Temperature
115
degrees F
19830808
19830808
Basin
480540
N1
Wyoming
All-Time Minimum Temperature
-66
degrees F
19330209
19330209
Riverside Ranger Stn. (Yellowstone NP)
EA
Original observation of -66 degrees F at Riverside Ranger Station on February 9, 1933 is maintained in Department of Interior archives.
Wyoming
All-Time Greatest 24-Hour Precipitation
6.06
inches
19850801
19850801
Cheyenne
24018
E
Wyoming
All-Time Maximum 24-Hour Snowfall
49
inches
19240321
19240321
Hunter Station
484770
N
Wyoming
All-Time Maximum Snow Depth
128
inches
19430204
19430204
Grassy Lake Dam
484050
N