Alert archive / Excessive Heat Watches
Excessive Heat Watches in the United States, 2024
141 excessive heat watches in 2024. 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
- 141
- Busiest month
- June60 excessive heat watches
- Busiest day
- June 16, 20249 excessive heat 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.
- California42
- Arizona24
- Puerto Rico16
- U.S. Virgin Islands16
- Nevada10
- Idaho8
- Oregon7
- Pennsylvania7
- Ohio6
- Utah6
- Washington5
- Kansas5
- Maryland5
- West Virginia5
- Indiana5
- Nebraska4
- Michigan4
- Virginia4
- New Jersey3
- Wisconsin3
- Illinois3
- Montana3
- Iowa3
- Minnesota3
- Mississippi3
- Delaware3
- District of Columbia3
- Texas2
- Louisiana2
- North Carolina2
- Missouri2
- Massachusetts2
- Arkansas2
- Connecticut2
- Oklahoma1
- Georgia1
- New Mexico1
- Wyoming1
- Maine1
- New Hampshire1
4 more states
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowThe tornado archiveThe radar archive20232025
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.