Alert archive / Winter Storm Warnings / 2011
Winter Storm Warnings in the United States, May 2011
22 winter storm warnings in May 2011. Each alert counts once, however many counties it covered. The archive of winter storm warnings reaches back to 2005.
Winter Storm Warnings by state
Each state shaded by its count. Tap a state for its own archive.
- Winter Storm Warnings
- 22
- Busiest day
- May 16, 20114 winter storm warnings
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.
- Montana75
- Colorado71
- California63
- Alaska58
- Wyoming54
- New York44
- Idaho44
- Washington40
- Pennsylvania40
- Kansas28
- Maine27
- Texas26
- Michigan26
- Minnesota23
- Vermont21
- Utah21
- New Hampshire21
- Wisconsin20
- Nebraska20
- South Dakota20
- Nevada20
- West Virginia20
- Connecticut20
- Massachusetts19
- New Mexico19
- Ohio18
- Tennessee17
- Arkansas17
- Missouri17
- New Jersey16
- North Carolina15
- Oregon15
- Maryland15
- Indiana14
- Virginia14
- Arizona13
- Illinois12
- North Dakota12
- Oklahoma12
- Iowa11
Nearby
Alerts in force nowThe tornado archiveThe radar archive20102012
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.