Alert archive / Severe Thunderstorm Watches / 2018
Severe Thunderstorm Watches in the United States, August 2018
34 severe thunderstorm watches in August 2018. 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
- 34
- Busiest day
- August 5, 20184 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.
- Kansas54
- Texas52
- Nebraska51
- Oklahoma47
- South Dakota38
- Missouri35
- Colorado33
- Minnesota28
- North Dakota27
- Iowa27
- Arkansas26
- Illinois25
- Wyoming25
- Wisconsin23
- Pennsylvania19
- Indiana18
- Kentucky16
- Tennessee16
- Mississippi16
- Montana15
- West Virginia15
- Alabama15
- New Mexico15
- Georgia14
- Ohio14
- Virginia13
- New York12
- Maryland12
- North Carolina9
- Florida9
- Louisiana9
- Michigan8
- South Carolina7
- Vermont7
- District of Columbia7
- Massachusetts6
- New Hampshire6
- Connecticut5
- New Jersey4
- Maine4
Nearby
Alerts in force nowThe tornado archiveThe radar archive20172019
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.