Winter Storm Watches in the United States
12,858 winter storm watches since 1986. Each alert counts once, however many counties it covered. The archive of winter storm watches reaches back to 2005.
Winter Storm Watches by state
Each state shaded by its count. Tap a state for its own archive.
- Winter Storm Watches
- 12,858
- Busiest year
- 2008862 winter storm watches
- Average year
- 584over 22 years on file
- Busiest day
- January 21, 202634 winter storm watches
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.
- California1,273
- Colorado982
- Montana917
- Wyoming895
- Alaska783
- Minnesota734
- Washington726
- Idaho665
- New York656
- Wisconsin572
- Michigan546
- Nebraska494
- Pennsylvania493
- Oregon483
- Iowa471
- West Virginia423
- South Dakota408
- Maine399
- Kansas382
- Utah370
- New Mexico370
- Nevada370
- Virginia342
- Illinois319
- Texas316
- Indiana300
- Maryland289
- Missouri284
- North Dakota267
- North Carolina260
- Ohio260
- Massachusetts256
- Vermont238
- Connecticut234
- New Hampshire231
- Kentucky189
- Arkansas177
- Oklahoma172
- New Jersey170
- Arizona162
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.