Severe Heatwave ● Closed

Extreme Heat Warning issued September 7 at 8:16PM PDT until September 11 at 8:00PM PDT by NWS San Diego CA, United States of America

Event time: Last updated: Sep 17, 2026 United States
Icon = what happened · ring colour = how serious: Extreme Severe Moderate Minor

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 temperatures up to 110
degrees expected and overnight low temperatures in the mid-80s to
low 90s.

* WHERE...Coachella Valley, San Diego County Deserts, and San
Gorgonio Pass near Banning.

* WHEN...From 10 AM Wednesday to 8 PM PDT Friday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

* ADDITIONAL DETAILS...Areas of major HeatRisk. Elevated lows will
limit overnight relief from the heat.

Measurements

Coordinates39.9645, -100.8105
RegionCoachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Location Precisioncountry
Issuing AuthorityUnited States of America — us-noaa-nws-en
Cap UrgencyExpected
Cap CertaintyLikely
Cap Expires2026-09-08T06:30:00-07:00

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 report

Also reported by: WMO WMO WMO WMO WMO

This event as JSON · API and licence

Source updated 41 days ago (Sep 8, 2026 03:18 UTC) · we last heard from WMO Alert Hub (national weather services) 33 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

Gale Warning issued October 19 at 2:38PM AKDT until October 20 at 5:00AM AKDT by NWS Anchorage AK, United States of America Moderate Severe Storm United States active via WMO 16 min ago Gale Warning issued October 19 at 2:38PM AKDT until October 21 at 5:00AM AKDT by NWS Anchorage AK, United States of America Moderate Severe Storm United States active via WMO 16 min ago Gale Warning issued October 19 at 2:38PM AKDT until October 20 at 5:00PM AKDT by NWS Anchorage AK, United States of America Moderate Severe Storm United States active via WMO 16 min ago Wind Advisory issued October 19 at 1:35PM AKDT until October 20 at 10:00PM AKDT by NWS Juneau AK, United States of America Moderate Severe Storm United States active via WMO 1 hr ago Wind Advisory issued October 19 at 1:35PM AKDT until October 21 at 4:00PM AKDT by NWS Juneau AK, United States of America Moderate Severe Storm United States active via WMO 1 hr ago

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.