Alert archive / California / Riverside County / 2026
Weather alerts in Riverside County, California, September 2026
19 weather alerts in September 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 19
- Warnings
- 6
- Watches
- 1
- Advisories
- 10
- Busiest day
- September 24, 20266 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
|---|---|---|---|
| Sep 7, 12:33 AM PDT | Extreme Heat Warning | PSR | 5 days |
| Sep 7, 11:09 AM PDT | Heat Advisory | SGX | 3 days |
| Sep 7, 11:09 AM PDT | Extreme Heat Warning | SGX | 4 days |
| Sep 8, 3:10 AM PDT | Heat Advisory | SGX | 35 hr |
| Sep 8, 5:08 PM PDT | Severe Thunderstorm Warning | SGX | 35 min |
| Sep 8, 5:21 PM PDT | Areal Flood Advisory | SGX | 114 min |
| Sep 9, 4:58 PM PDT | Areal Flood Advisory | SGX | 62 min |
| Sep 11, 2:30 AM PDT | Heat Advisory | SGX | 18 hr |
| Sep 24, 12:30 PM PDT | Areal Flood Advisory | SGX | 2 hr |
| Sep 24, 2:13 PM PDT | Areal Flood Advisory | SGX | 2 hr |
| Sep 24, 2:33 PM PDT | Flash Flood Warning | SGX | 90 min |
| Sep 24, 2:39 PM PDT | Special Weather Statement | PSR | 36 min |
| Sep 24, 3:31 PM PDT | Areal Flood Advisory | PSR | 2 hr |
| Sep 24, 4:32 PM PDT | Flash Flood Warning | SGX | 118 min |
| Sep 24, 5:02 PM PDT | Areal Flood Advisory | SGX | 51 min |
| Sep 28, 8:57 PM PDT | Special Weather Statement | SGX | 33 min |
| Sep 28, 9:13 PM PDT | Flash Flood Warning | SGX | 3 hr |
| Sep 28, 10:15 PM PDT | Areal Flood Advisory | PSR | 3 hr |
| Sep 30, 3:05 AM PDT | Extreme Heat Watch | SGX | 21 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 1 |
| Special Weather Statement | 2 |
| Flooding | |
| Flash Flood Warning | 3 |
| Areal Flood Advisory | 7 |
| Heat | |
| Extreme Heat Warning | 2 |
| Extreme Heat Watch | 1 |
| Heat Advisory | 3 |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive2025
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.