Alert archive / Excessive Heat Watches / 2019
Excessive Heat Watches in the United States, August 2019
18 excessive heat watches in August 2019. Each alert counts once, however many counties it covered. The archive of excessive heat watches reaches back to 2005.
Excessive Heat Watches by state
Each state shaded by its count. Tap a state for its own archive.
- Excessive Heat Watches
- 18
- Busiest day
- August 11, 20194 excessive heat 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.
- California20
- Arizona10
- Iowa7
- Missouri6
- Illinois6
- Indiana6
- Pennsylvania6
- Virginia6
- West Virginia6
- Maryland6
- Nebraska6
- Ohio5
- Kansas5
- Kentucky5
- Texas5
- New Jersey4
- New York4
- Nevada4
- District of Columbia4
- North Carolina3
- Delaware3
- Connecticut3
- Tennessee2
- Mississippi2
- Arkansas2
- Oregon2
- Minnesota2
- South Carolina1
- Maine1
- New Hampshire1
- New Mexico1
- Michigan1
- South Dakota1
- Massachusetts1
- Wisconsin1
- Rhode Island1
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. Warning verification from the Mesonet's Cow. Rebuilt daily.