Alert archive / California / Heat Advisories
Heat Advisories in California, 2015
21 heat advisories in 2015. 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 heat advisories reaches back to 2005.
Heat Advisories by county
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Heat Advisories
- 21
- Busiest month
- June6 heat advisories
- Busiest day
- June 30, 20153 heat advisories
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 7, 2:36 AM PDT | Heat Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more | 41 hr |
| Jun 15, 1:02 PM PDT | Heat Advisory | SGX | Riverside, San Bernardino, San Diego | 6 days |
| Jun 24, 9:57 AM PDT | Heat Advisory | MFR | Siskiyou | 4 days |
| Jun 30, 2:17 AM PDT | Heat Advisory | MFR | Siskiyou | 5 days |
| Jun 30, 9:02 AM PDT | Heat Advisory | MTR | Alameda, Contra Costa, Marin, Napa, Santa Clara, Sonoma | 36 hr |
| Jun 30, 4:20 PM PDT | Heat Advisory | EKA | 57 hr | |
| Jul 27, 2:17 AM PDT | Heat Advisory | MFR | Siskiyou | 6 days |
| Aug 2, 8:28 PM PDT | Heat Advisory | SGX | Riverside, San Diego | 72 hr |
| Aug 13, 2:00 PM PDT | Heat Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 4 days |
| Aug 15, 7:20 PM PDT | Heat Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more | 26 hr |
| Aug 28, 3:16 AM PDT | Heat Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 15 hr |
| Sep 7, 11:05 AM PDT | Heat Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 4 days |
| Sep 8, 2:27 AM PDT | Heat Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more | 17 hr |
| Sep 8, 2:27 AM PDT | Heat Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more | 41 hr |
| Sep 9, 2:33 AM PDT | Heat Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more | 40 hr |
| Sep 20, 2:43 AM PDT | Heat Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more | 17 hr |
| Sep 21, 3:13 AM PDT | Heat Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more | 17 hr |
| Oct 8, 3:09 AM PDT | Heat Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 41 hr |
| Oct 10, 7:03 AM PDT | Heat Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 19 hr |
| Oct 11, 2:31 AM PDT | Heat Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 25 hr |
| Oct 12, 3:11 AM PDT | Heat Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 15 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 archive20142016
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.