Alert archive / Winter Storm Watches / 2021
Winter Storm Watches in the United States, May 2021
8 winter storm watches in May 2021. 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
- 8
- Busiest day
- May 1, 20212 winter storm watches
Over time
By day
Days in UTC, the clock the archive keeps.
By state
Every state and territory, with the alerts that covered any part of it. Each state’s page lists every one of them.
- California79
- Alaska71
- Wyoming40
- Colorado37
- Washington34
- New York27
- Minnesota27
- Texas26
- Montana24
- Virginia22
- West Virginia22
- Pennsylvania21
- Iowa21
- Wisconsin19
- Oregon19
- Idaho19
- Nebraska16
- Nevada16
- New Mexico16
- Utah16
- South Dakota15
- Kentucky15
- North Carolina14
- Tennessee14
- Maryland14
- Arkansas13
- Illinois13
- Indiana12
- Maine12
- Vermont12
- Ohio11
- Massachusetts11
- Connecticut11
- Kansas10
- Missouri10
- Oklahoma9
- Louisiana8
- Mississippi7
- Arizona7
- New Jersey7
Nearby
Alerts in force nowThe tornado archiveThe radar archive20202022
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.