Alert archive / Arizona / Excessive Heat Watches
Excessive Heat Watches in Arizona, 2021
15 excessive heat watches in 2021. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of excessive heat watches reaches back to 2005.
Excessive Heat Watches by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Excessive Heat Watches
- 15
- Busiest month
- August5 excessive heat watches
- Busiest day
- June 9, 20214 excessive heat watches
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 11:54 AM MST | Excessive Heat Watch | VEF | Mohave | 26 hr |
| Jun 9, 2:22 AM MST | Excessive Heat Watch | TWC | Graham, Greenlee, Pima, Pinal | 12 hr |
| Jun 9, 2:23 AM MST | Excessive Heat Watch | PSR | Gila, La Paz, Maricopa, Pinal, Yuma | 35 hr |
| Jun 9, 1:04 PM MST | Excessive Heat Watch | VEF | Mohave | 24 hr |
| Jun 9, 2:41 PM MST | Excessive Heat Watch | TWC | Graham, Greenlee, Pima, Santa Cruz | 70 hr |
| Jul 5, 12:59 PM MST | Excessive Heat Watch | PSR | La Paz, Maricopa | 49 hr |
| Jul 5, 1:04 PM MST | Excessive Heat Watch | VEF | Mohave | 25 hr |
| Aug 1, 1:31 PM MST | Excessive Heat Watch | PSR | La Paz, Yuma | 24 hr |
| Aug 2, 1:52 AM MST | Excessive Heat Watch | VEF | Mohave | 11 hr |
| Aug 23, 1:37 PM MST | Excessive Heat Watch | PSR | La Paz, Maricopa, Pinal, Yuma | 24 hr |
| Aug 23, 2:09 PM MST | Excessive Heat Watch | TWC | Pima, Pinal | 24 hr |
| Aug 24, 1:27 PM MST | Excessive Heat Watch | VEF | Mohave | 11 hr |
| Sep 3, 1:17 PM MST | Excessive Heat Watch | VEF | Mohave | 37 hr |
| Sep 4, 1:52 AM MST | Excessive Heat Watch | FGZ | Coconino | 25 hr |
| Sep 7, 1:28 PM MST | Excessive Heat Watch | PSR | Maricopa | 23 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.