Winter Weather Advisories in the United States
40,193 winter weather advisories since 1986. Each alert counts once, however many counties it covered. The archive of winter weather advisories reaches back to 2005.
Winter Weather Advisories by state
Each state shaded by its count. Tap a state for its own archive.
- Winter Weather Advisories
- 40,193
- Busiest year
- 20192,693 winter weather advisories
- Average year
- 1,827over 22 years on file
- Busiest day
- February 19, 201954 winter weather advisories
Over time
By year
Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.
By month of the year
By state
Every state and territory, with the alerts that covered any part of it. Each state’s page lists every one of them.
- Alaska3,638
- Montana3,117
- California2,400
- Wyoming2,308
- Colorado2,227
- Minnesota2,190
- Washington2,185
- Idaho2,102
- Michigan2,094
- New York2,064
- Wisconsin1,789
- Oregon1,723
- Pennsylvania1,714
- West Virginia1,517
- Nebraska1,504
- Iowa1,494
- Kansas1,419
- South Dakota1,261
- Virginia1,189
- Indiana1,100
- Maine1,070
- Ohio1,066
- Illinois1,058
- Texas1,029
- Missouri979
- Nevada969
- North Carolina956
- North Dakota926
- Kentucky925
- Maryland887
- Utah872
- New Mexico782
- Massachusetts704
- Connecticut642
- Vermont635
- Oklahoma609
- Tennessee602
- New Hampshire548
- Arkansas547
- New Jersey510
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.