Alert archive / Severe Thunderstorm Watches
Severe Thunderstorm Watches in the United States, 2019
499 severe thunderstorm watches in 2019. 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
- 499
- Busiest month
- June143 severe thunderstorm watches
- Busiest day
- May 29, 201912 severe thunderstorm watches
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.
- Texas101
- Kansas99
- Missouri72
- Nebraska71
- Oklahoma61
- Illinois51
- South Dakota49
- Iowa45
- Indiana38
- Arkansas35
- Colorado34
- Virginia34
- Minnesota34
- Pennsylvania32
- Wyoming32
- North Dakota28
- Maryland28
- Ohio26
- West Virginia25
- Wisconsin24
- North Carolina22
- Kentucky20
- Montana20
- New Mexico19
- New York17
- New Jersey16
- Georgia16
- Louisiana15
- Tennessee14
- Delaware14
- Michigan13
- District of Columbia13
- Mississippi12
- South Carolina11
- Alabama10
- Connecticut10
- Massachusetts10
- Vermont8
- New Hampshire6
- Florida6
The busiest days
Days with the most alerts issued, by UTC date.
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.