Alert archive / California / Excessive Heat Warnings
Excessive Heat Warnings in California, 2019
32 excessive heat warnings in 2019. 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 2019. Tap one for its archive.
- Excessive Heat Warnings
- 32
- Busiest month
- August18 excessive heat warnings
- Busiest day
- June 10, 20195 excessive heat warnings
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Pacific Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 1:33 AM PDT | Excessive Heat Warning | HNX | 4 days | |
| Jun 10, 2:09 AM PDT | Excessive Heat Warning | SGX | Riverside, San Diego | 66 hr |
| Jun 10, 2:10 AM PDT | Excessive Heat Warning | PSR | Imperial, Riverside, San Bernardino | 4 days |
| Jun 10, 3:24 AM PDT | Excessive Heat Warning | VEF | Inyo, San Bernardino | 4 days |
| Jun 10, 11:44 AM PDT | Excessive Heat Warning | MTR | Alameda, Contra Costa, San Mateo, Santa Clara | 9 hr |
| Jun 10, 1:09 PM PDT | Excessive Heat Warning | STO | 34 hr | |
| Jun 10, 5:03 PM PDT | Excessive Heat Warning | MTR | Alameda, Contra Costa | 28 hr |
| Jul 9, 1:19 PM PDT | Excessive Heat Warning | PSR | Imperial, Riverside | 7 days |
| Jul 11, 1:26 PM PDT | Excessive Heat Warning | SGX | Riverside, San Diego | 4 days |
| Jul 27, 10:06 AM PDT | Excessive Heat Warning | HNX | 34 hr | |
| Jul 27, 2:13 PM PDT | Excessive Heat Warning | PSR | Imperial, Riverside, San Bernardino | 30 hr |
| Jul 28, 9:04 AM PDT | Excessive Heat Warning | LOX | 12 hr | |
| Aug 2, 12:55 PM PDT | Excessive Heat Warning | PSR | Imperial, Riverside, San Bernardino | 3 days |
| Aug 2, 1:15 PM PDT | Excessive Heat Warning | VEF | Inyo, San Bernardino | 3 days |
| Aug 2, 1:40 PM PDT | Excessive Heat Warning | SGX | Riverside, San Bernardino, San Diego | 3 days |
| Aug 12, 2:17 PM PDT | Excessive Heat Warning | PSR | Imperial, Riverside, San Bernardino | 4 days |
| Aug 12, 2:26 PM PDT | Excessive Heat Warning | SGX | Riverside, San Diego | 3 days |
| Aug 13, 11:12 AM PDT | Excessive Heat Warning | STO | 3 days | |
| Aug 13, 1:56 PM PDT | Excessive Heat Warning | HNX | 54 hr | |
| Aug 13, 2:26 PM PDT | Excessive Heat Warning | VEF | Inyo, San Bernardino | 3 days |
| Aug 16, 1:19 AM PDT | Excessive Heat Warning | HNX | 19 hr | |
| Aug 16, 1:06 PM PDT | Excessive Heat Warning | PSR | Imperial, Riverside, San Bernardino | 5 days |
| Aug 18, 3:21 AM PDT | Excessive Heat Warning | VEF | Inyo, San Bernardino | 4 days |
| Aug 19, 2:24 AM PDT | Excessive Heat Warning | SGX | Riverside, San Bernardino, San Diego | 66 hr |
| Aug 26, 3:13 AM PDT | Excessive Heat Warning | VEF | Inyo, San Bernardino | 7 days |
| Aug 26, 3:42 AM PDT | Excessive Heat Warning | MFR | Siskiyou | 62 hr |
| Aug 27, 12:25 AM PDT | Excessive Heat Warning | HNX | 19 hr | |
| Aug 27, 2:16 PM PDT | Excessive Heat Warning | PSR | Imperial, Riverside | 4 days |
| Aug 29, 9:09 AM PDT | Excessive Heat Warning | SGX | Riverside, San Bernardino, San Diego | 3 days |
| Aug 31, 3:16 AM PDT | Excessive Heat Warning | LOX | 41 hr | |
| Sep 3, 3:08 AM PDT | Excessive Heat Warning | PSR | Imperial, Riverside | 41 hr |
| Sep 3, 3:28 AM PDT | Excessive Heat Warning | VEF | San Bernardino | 41 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 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.