Severe Heatwave ● Closed
Extreme Heat Warning issued September 10 at 4:00AM PDT until September 11 at 8:00PM PDT by NWS San Diego CA, United States of America
Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.
* WHAT...Dangerously hot conditions with high temperatures of 110 to
114 and low temperatures in the 80s expected.
* WHERE...Coachella Valley, San Diego County Deserts, and San
Gorgonio Pass near Banning.
* WHEN...Until 8 PM PDT Friday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Very warm overnight temperatures will limit
relief from the heat.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Expected |
| Cap Certainty | Likely |
| Cap Expires | 2026-09-10T20:00:00-07:00 |
Official source
Warnings courtesy of the issuing national meteorological service, via the WMO Alert Hub.
This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.
Severity as published by WMO Alert Hub (national weather services).
View original reportAlso reported by: WMO WMO WMO WMO WMO WMO WMO
This event as JSON · API and licence
Source updated 39 days ago (Sep 10, 2026 11:01 UTC) · we last heard from WMO Alert Hub (national weather services) 32 seconds ago
On a slow connection? Low-bandwidth version — no map, no scripts, under 14 KB.
About this location
The agency did not publish coordinates for this warning. The pin is the centre of the country, not the location of the event — read the area name, not the map, for where it applies.
Area as the agency stated it: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Official authorities in United States
If you are there, these are the bodies whose instructions apply. This site is not an emergency service and does not issue warnings.
More for United States →What to do
Follow the instructions issued by WMO Alert Hub (national weather services) and your local emergency services. The guidance below is background.
Recognising heat exhaustion and heat stroke, keeping cool, and protecting vulnerable people during extreme heat.
Open Heatwave Safety Guide →Nearby & related events
Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.