Alert archive / Arizona / Excessive Heat Warnings
Excessive Heat Warnings in Arizona, 2020
46 excessive heat warnings in 2020. 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 warnings reaches back to 2005.
Excessive Heat Warnings by county
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Excessive Heat Warnings
- 46
- Busiest month
- August13 excessive heat warnings
- Busiest day
- June 2, 20204 excessive heat warnings
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 |
|---|---|---|---|---|
| Apr 24, 1:32 PM MST | Excessive Heat Warning | PSR | La Paz, Maricopa, Pinal, Yuma | 71 hr |
| Apr 25, 2:11 PM MST | Excessive Heat Warning | VEF | Mohave | 5 days |
| Apr 27, 3:44 AM MST | Excessive Heat Warning | PSR | La Paz, Maricopa, Pinal, Yuma | 4 days |
| Apr 27, 1:40 PM MST | Excessive Heat Warning | TWC | Graham, Greenlee, Pima, Pinal | 3 days |
| May 5, 2:36 AM MST | Excessive Heat Warning | PSR | La Paz, Maricopa, Pinal, Yuma | 65 hr |
| May 5, 3:10 AM MST | Excessive Heat Warning | TWC | Cochise, Graham, Pima, Pinal, Santa Cruz | 41 hr |
| May 6, 9:25 AM MST | Excessive Heat Warning | TWC | Cochise, Graham, Pima, Pinal, Santa Cruz | 35 hr |
| May 24, 2:32 AM MST | Excessive Heat Warning | VEF | Mohave | 6 days |
| May 24, 2:55 AM MST | Excessive Heat Warning | PSR | Gila, La Paz, Maricopa, Pinal, Yuma | 8 days |
| May 25, 1:14 PM MST | Excessive Heat Warning | TWC | Cochise, Graham, Greenlee, Pima, Pinal, Santa Cruz | 6 days |
| May 26, 2:51 PM MST | Excessive Heat Warning | FGZ | Coconino, Yavapai | 3 days |
| Jun 2, 1:06 AM MST | Excessive Heat Warning | VEF | Mohave | 67 hr |
| Jun 2, 2:04 AM MST | Excessive Heat Warning | PSR | Gila, La Paz, Maricopa, Pinal, Yuma | 66 hr |
| Jun 2, 2:41 AM MST | Excessive Heat Warning | TWC | Cochise, Graham, Greenlee, Pima, Pinal, Santa Cruz | 4 days |
| Jun 2, 1:57 PM MST | Excessive Heat Warning | FGZ | Yavapai | 54 hr |
| Jun 22, 10:28 AM MST | Excessive Heat Warning | FGZ | Coconino | 58 hr |
| Jul 5, 2:28 AM MST | Excessive Heat Warning | FGZ | Coconino | 66 hr |
| Jul 8, 1:40 PM MST | Excessive Heat Warning | FGZ | Coconino, Gila, Yavapai | 5 days |
| Jul 8, 1:52 PM MST | Excessive Heat Warning | VEF | Mohave | 5 days |
| Jul 8, 2:02 PM MST | Excessive Heat Warning | TWC | Cochise, Graham, Greenlee, Pima, Pinal, Santa Cruz | 5 days |
| Jul 8, 2:19 PM MST | Excessive Heat Warning | PSR | Gila, La Paz, Maricopa, Pinal, Yuma | 5 days |
| Jul 14, 2:12 AM MST | Excessive Heat Warning | FGZ | Coconino | 42 hr |
| Jul 18, 2:12 AM MST | Excessive Heat Warning | FGZ | Coconino | 66 hr |
| Jul 18, 3:32 AM MST | Excessive Heat Warning | PSR | Maricopa, Yuma | 40 hr |
| Jul 28, 2:30 AM MST | Excessive Heat Warning | TWC | Cochise, Graham, Greenlee, Pima, Pinal, Santa Cruz | 5 days |
| Jul 28, 2:57 AM MST | Excessive Heat Warning | PSR | Gila, La Paz, Maricopa, Pinal, Yuma | 8 days |
| Jul 28, 3:42 AM MST | Excessive Heat Warning | VEF | Mohave | 5 days |
| Jul 28, 3:44 AM MST | Excessive Heat Warning | FGZ | Coconino, Gila, Yavapai | 8 days |
| Aug 2, 1:52 AM MST | Excessive Heat Warning | PSR | Maricopa, Pinal | 66 hr |
| Aug 2, 8:24 PM MST | Excessive Heat Warning | FGZ | Coconino, Yavapai | 48 hr |
| Aug 7, 1:13 PM MST | Excessive Heat Warning | PSR | Gila, Maricopa | 3 days |
| Aug 10, 8:02 AM MST | Excessive Heat Warning | FGZ | Coconino | 12 hr |
| Aug 11, 2:25 AM MST | Excessive Heat Warning | FGZ | Coconino | 18 hr |
| Aug 11, 1:27 PM MST | Excessive Heat Warning | PSR | Gila, La Paz, Maricopa, Pinal, Yuma | 9 days |
| Aug 11, 2:22 PM MST | Excessive Heat Warning | TWC | Graham, Greenlee, Pima, Pinal, Santa Cruz | 8 days |
| Aug 12, 1:07 PM MST | Excessive Heat Warning | FGZ | Coconino, Gila, Yavapai | 9 days |
| Aug 12, 1:10 PM MST | Excessive Heat Warning | VEF | Mohave | 9 days |
| Aug 23, 2:19 AM MST | Excessive Heat Warning | TWC | Graham, Greenlee, Pima, Pinal | 5 days |
| Aug 23, 2:25 AM MST | Excessive Heat Warning | PSR | Gila, La Paz, Maricopa, Pinal, Yuma | 6 days |
| Aug 23, 2:42 AM MST | Excessive Heat Warning | VEF | Mohave | 5 days |
| Aug 28, 1:48 AM MST | Excessive Heat Warning | PSR | Yuma | 18 hr |
| Sep 2, 11:53 AM MST | Excessive Heat Warning | VEF | Mohave | 5 days |
| Sep 2, 1:07 PM MST | Excessive Heat Warning | FGZ | Coconino, Gila, Yavapai | 5 days |
| Sep 2, 1:33 PM MST | Excessive Heat Warning | PSR | Gila, La Paz, Maricopa, Pinal, Yuma | 5 days |
| Sep 2, 2:18 PM MST | Excessive Heat Warning | TWC | Graham, Greenlee, Pima, Pinal | 5 days |
| Sep 15, 1:57 PM MST | Excessive Heat Warning | PSR | Maricopa, Yuma | 54 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 archive20192021
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.