Alert archive / Severe Thunderstorm Warnings / 2026
Severe Thunderstorm Warnings in the United States, April 2026
3,102 severe thunderstorm warnings in April 2026. Each alert counts once, however many counties it covered. The last few weeks are still filling in as offices finish their follow-ups. 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
- 3,102
- Busiest day
- April 28, 2026339 severe thunderstorm 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.
- Texas2,011
- Kansas1,635
- Nebraska1,334
- Oklahoma1,305
- Missouri1,200
- Illinois1,027
- Colorado973
- Pennsylvania889
- Ohio878
- Indiana872
- Virginia839
- North Carolina820
- Iowa809
- South Dakota778
- Georgia756
- Florida682
- Mississippi635
- Wisconsin632
- Arkansas624
- Kentucky616
- West Virginia589
- Arizona573
- Alabama531
- Minnesota504
- Michigan474
- New Mexico455
- Tennessee455
- New York454
- South Carolina450
- Montana449
- North Dakota443
- Louisiana407
- Maryland366
- Wyoming337
- New Jersey235
- Utah154
- California114
- Idaho111
- Delaware94
- Nevada86
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.