Alert archive / Heat Advisories / 2023
Heat Advisories in the United States, May 2023
17 heat advisories in May 2023. Each alert counts once, however many counties it covered. The archive of heat advisories reaches back to 2005.
Heat Advisories by state
Each state shaded by its count. Tap a state for its own archive.
- Heat Advisories
- 17
- Busiest day
- May 11, 20232 heat advisories
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.
- Texas489
- Florida182
- Arkansas150
- Puerto Rico141
- Mississippi135
- Louisiana132
- Oklahoma121
- Alabama91
- Kansas83
- Georgia82
- New Mexico74
- U.S. Virgin Islands59
- Missouri50
- California44
- Tennessee43
- North Carolina41
- South Carolina34
- Kentucky28
- Nebraska27
- Minnesota26
- New York24
- Indiana23
- Wisconsin22
- South Dakota22
- Iowa19
- Illinois18
- Ohio16
- Oregon14
- Washington13
- Virginia13
- Colorado13
- West Virginia11
- Idaho10
- Pennsylvania10
- Connecticut9
- Vermont9
- Montana8
- Maryland7
- Nevada7
- Maine6
Nearby
Alerts in force nowThe tornado archiveThe radar archive20222024
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.