Alert archive / California / Excessive Heat Warnings
Excessive Heat Warnings in California, 2008
40 excessive heat warnings in 2008. 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 2008. Tap one for its archive.
- Excessive Heat Warnings
- 40
- Busiest month
- June17 excessive heat warnings
- Busiest day
- July 8, 20084 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 |
|---|---|---|---|---|
| May 13, 1:29 PM PDT | Excessive Heat Warning | MTR | Santa Clara | 31 hr |
| May 14, 2:26 PM PDT | Excessive Heat Warning | MTR | Alameda, Contra Costa, City and County of San Francisco, San Mateo, Santa Clara | 30 hr |
| May 15, 3:14 PM PDT | Excessive Heat Warning | MTR | Santa Clara | 29 hr |
| May 17, 1:48 PM PDT | Excessive Heat Warning | PSR | 30 hr | |
| May 17, 1:48 PM PDT | Excessive Heat Warning | PSR | 54 hr | |
| May 17, 1:48 PM PDT | Excessive Heat Warning | PSR | 3 days | |
| May 18, 3:21 PM PDT | Excessive Heat Warning | VEF | Inyo, San Bernardino | 28 hr |
| May 18, 3:21 PM PDT | Excessive Heat Warning | VEF | Inyo, San Bernardino | 52 hr |
| Jun 14, 2:01 AM PDT | Excessive Heat Warning | PSR | 18 hr | |
| Jun 14, 2:01 AM PDT | Excessive Heat Warning | PSR | 42 hr | |
| Jun 14, 2:01 AM PDT | Excessive Heat Warning | PSR | 62 hr | |
| Jun 15, 1:47 AM PDT | Excessive Heat Warning | PSR | 38 hr | |
| Jun 16, 4:36 AM PDT | Excessive Heat Warning | PSR | 63 hr | |
| Jun 18, 4:49 AM PDT | Excessive Heat Warning | PSR | 63 hr | |
| Jun 18, 4:49 AM PDT | Excessive Heat Warning | PSR | 39 hr | |
| Jun 18, 3:25 PM PDT | Excessive Heat Warning | PSR | 71 hr | |
| Jun 19, 3:08 PM PDT | Excessive Heat Warning | LOX | Los Angeles, Santa Barbara | 29 hr |
| Jun 19, 3:54 PM PDT | Excessive Heat Warning | SGX | Riverside, San Bernardino, San Diego | 28 hr |
| Jun 20, 4:40 AM PDT | Excessive Heat Warning | PSR | 58 hr | |
| Jun 20, 2:44 PM PDT | Excessive Heat Warning | SGX | Riverside, San Bernardino, San Diego | 27 hr |
| Jun 20, 4:27 PM PDT | Excessive Heat Warning | LOX | Los Angeles, Santa Barbara | 28 hr |
| Jun 23, 10:16 AM PDT | Excessive Heat Warning | PSR | 10 hr | |
| Jun 30, 2:30 AM PDT | Excessive Heat Warning | PSR | 18 hr | |
| Jun 30, 3:08 PM PDT | Excessive Heat Warning | PSR | 4 days | |
| Jun 30, 3:08 PM PDT | Excessive Heat Warning | PSR | 13 hr | |
| Jul 1, 4:34 PM PDT | Excessive Heat Warning | PSR | 27 hr | |
| Jul 1, 4:34 PM PDT | Excessive Heat Warning | PSR | 51 hr | |
| Jul 1, 4:34 PM PDT | Excessive Heat Warning | PSR | 51 hr | |
| Jul 2, 2:52 PM PDT | Excessive Heat Warning | VEF | Inyo, San Bernardino | 27 hr |
| Jul 7, 2:34 PM PDT | Excessive Heat Warning | LOX | Santa Barbara | 3 days |
| Jul 7, 8:38 PM PDT | Excessive Heat Warning | VEF | Inyo, San Bernardino | 23 hr |
| Jul 7, 8:38 PM PDT | Excessive Heat Warning | VEF | Inyo, San Bernardino | 47 hr |
| Jul 8, 4:10 AM PDT | Excessive Heat Warning | STO | 61 hr | |
| Jul 8, 8:18 AM PDT | Excessive Heat Warning | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more | 67 hr |
| Jul 9, 4:43 AM PDT | Excessive Heat Warning | HNX | 45 hr | |
| Jul 17, 3:43 PM PDT | Excessive Heat Warning | PSR | 28 hr | |
| Jul 30, 2:01 PM PDT | Excessive Heat Warning | PSR | 72 hr | |
| Aug 15, 3:35 AM PDT | Excessive Heat Warning | VEF | Inyo, San Bernardino | 8 hr |
| Aug 28, 4:15 AM PDT | Excessive Heat Warning | VEF | Inyo, San Bernardino | 11 hr |
| Sep 5, 5:00 PM PDT | Excessive Heat Warning | PSR | 27 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- San Bernardino County9
- Inyo County7
- Santa Clara County4
- Santa Barbara County3
- Alameda County2
- Contra Costa County2
- San Mateo County2
- Los Angeles County2
- Riverside County2
- San Diego County2
- City and County of San Francisco1
- Marin County1
- Monterey County1
- Napa County1
- San Benito County1
- Santa Cruz County1
- Sonoma County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20072009
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.