Alert archive / Severe Thunderstorm Warnings / 2019
Severe Thunderstorm Warnings in the United States, August 2019
3,654 severe thunderstorm warnings in August 2019. 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
- 3,654
- Busiest day
- August 18, 2019254 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.
- Texas2,651
- Kansas1,606
- Oklahoma1,309
- Nebraska982
- Virginia964
- Missouri938
- Pennsylvania787
- North Carolina710
- Ohio666
- Colorado653
- Georgia652
- South Dakota635
- Illinois633
- Wyoming577
- Arkansas560
- Mississippi549
- New York545
- Minnesota531
- Louisiana497
- Indiana484
- Iowa483
- Maryland462
- Montana459
- Alabama456
- Kentucky435
- South Carolina422
- Florida413
- New Mexico410
- West Virginia395
- North Dakota361
- Tennessee344
- New Jersey274
- Arizona274
- Wisconsin271
- Michigan253
- Massachusetts134
- Delaware103
- Maine94
- California91
- Idaho84
Nearby
Alerts in force nowThe tornado archiveThe radar archive20182020
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.