Alert archive / Severe Thunderstorm Watches / 2011
Severe Thunderstorm Watches in the United States, July 2011
109 severe thunderstorm watches in July 2011. Each alert counts once, however many counties it covered. The archive of severe thunderstorm watches reaches back to 1997.
Severe Thunderstorm Watches by state
Each state shaded by its count. Tap a state for its own archive.
- Severe Thunderstorm Watches
- 109
- Busiest day
- July 11, 201115 severe thunderstorm 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.
- Missouri81
- Kansas75
- Texas73
- Nebraska64
- Illinois61
- Ohio57
- Oklahoma57
- Arkansas56
- South Dakota53
- Virginia53
- Pennsylvania53
- North Carolina51
- Indiana48
- West Virginia48
- Kentucky46
- Iowa45
- Minnesota44
- Tennessee40
- Wisconsin39
- Georgia38
- New York34
- South Carolina34
- North Dakota34
- Maryland34
- Colorado32
- Mississippi29
- Michigan28
- Alabama24
- Montana24
- Louisiana19
- Wyoming17
- New Jersey17
- District of Columbia16
- Connecticut15
- Delaware15
- New Hampshire15
- Maine13
- Massachusetts13
- Vermont11
- Florida10
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.