Alert archive / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in the United States, 2002
17,767 severe thunderstorm warnings in 2002. Each alert counts once, however many counties it covered. The archive of severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by state
Each state shaded by its count. Tap a state for its own archive.
- Severe Thunderstorm Warnings
- 17,767
- Busiest month
- July3,346 severe thunderstorm warnings
- Busiest day
- June 4, 2002368 severe thunderstorm warnings
Over time
By month
By state
Every state and territory, with the alerts that covered any part of it. Each state’s page lists every one of them.
- Texas1,811
- Kansas1,193
- Missouri845
- Nebraska810
- Oklahoma737
- Mississippi696
- Georgia656
- Minnesota620
- Alabama618
- Tennessee587
- South Dakota572
- Iowa564
- North Carolina559
- Ohio550
- Kentucky523
- Arkansas517
- Virginia467
- Montana437
- Pennsylvania432
- North Dakota416
- Wisconsin404
- Michigan390
- South Carolina347
- Florida330
- Illinois330
- Louisiana329
- New York313
- Colorado278
- Indiana270
- Arizona237
- New Mexico228
- West Virginia178
- Maryland135
- Wyoming131
- New Jersey107
- Maine97
- Utah85
- California69
- Idaho65
- Oregon55
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowThe tornado archiveThe radar archive20012003
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. Warning verification from the Mesonet's Cow. Rebuilt daily.