Alert archive / California / Riverside County / Excessive Heat Warnings
Excessive Heat Warnings in Riverside County, California, 2021
14 excessive heat warnings in 2021. An alert counts here when it covered this county. The archive of excessive heat warnings reaches back to 2005.
Riverside County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Excessive Heat Warnings
- 14
- Busiest month
- June6 excessive heat warnings
- Busiest day
- August 2, 20212 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 | Lasted |
|---|---|---|---|
| Jun 1, 2:08 PM PDT | Excessive Heat Warning | SGX | 3 days |
| Jun 2, 2:15 AM PDT | Excessive Heat Warning | PSR | 67 hr |
| Jun 9, 2:11 PM PDT | Excessive Heat Warning | PSR | 11 days |
| Jun 10, 1:37 PM PDT | Excessive Heat Warning | SGX | 10 days |
| Jun 25, 1:05 PM PDT | Excessive Heat Warning | SGX | 3 days |
| Jun 26, 2:20 AM PDT | Excessive Heat Warning | PSR | 66 hr |
| Jul 6, 1:26 PM PDT | Excessive Heat Warning | SGX | 6 days |
| Jul 7, 1:42 PM PDT | Excessive Heat Warning | PSR | 5 days |
| Aug 2, 11:38 AM PDT | Excessive Heat Warning | SGX | 3 days |
| Aug 2, 1:45 PM PDT | Excessive Heat Warning | PSR | 3 days |
| Aug 24, 1:20 PM PDT | Excessive Heat Warning | PSR | 5 days |
| Aug 24, 1:30 PM PDT | Excessive Heat Warning | SGX | 5 days |
| Sep 6, 12:12 PM PDT | Excessive Heat Warning | PSR | 3 days |
| Sep 10, 2:19 AM PDT | Excessive Heat Warning | PSR | 4 days |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe 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.