Severe Heatwave ● Closed

Extreme Heat Warning issued September 8 at 7:01AM PDT until September 9 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...For the Extreme Heat Warning, dangerously hot conditions
with high temperatures in the mid 80s at the beaches to 90s for
higher coastal terrain with low temperatures in the lower to mid
70s. For the Heat Advisory, high temperatures around 80 near the
coast to the lower to mid 90s for higher coastal terrain.

* WHERE...Orange County Coastal Areas and San Diego County Coastal
Areas.

* WHEN...For the Extreme Heat Warning, until 8 PM PDT Wednesday. For
the Heat Advisory, from 8 PM Wednesday to 8 PM PDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Hot temperatures may cause heat illnesses.

Measurements

Coordinates39.9645, -100.8105
RegionSan Diego County Coastal Areas; Orange County Coastal
Location Precisioncountry
Issuing AuthorityUnited States of America — us-noaa-nws-en
Cap UrgencyExpected
Cap CertaintyLikely
Cap Expires2026-09-08T15:15:00-07:00

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 WMO WMO WMO WMO WMO WMO WMO WMO WMO WMO WMO WMO WMO WMO WMO WMO WMO WMO

This event as JSON · API and licence

Source updated 41 days ago (Sep 8, 2026 14:02 UTC) · we last heard from WMO Alert Hub (national weather services) 35 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: San Diego County Coastal Areas; Orange County Coastal

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

Beach Hazards Statement issued October 19 at 8:24PM EDT until October 20 at 8:00PM EDT by NWS Newport/Morehead City NC, United States of America Moderate Storm Surge United States active via WMO 20 min ago Coastal Flood Warning issued October 19 at 8:24PM EDT until October 21 at 8:00PM EDT by NWS Newport/Morehead City NC, United States of America Severe Storm Surge United States active via WMO 20 min ago Gale Warning issued October 19 at 8:04PM EDT until October 22 at 1:00AM EDT by NWS Wakefield VA, United States of America Moderate Severe Storm United States active via WMO 40 min ago Gale Warning issued October 19 at 8:04PM EDT until October 21 at 7:00PM EDT by NWS Wakefield VA, United States of America Moderate Severe Storm United States active via WMO 40 min ago Gale Warning issued October 19 at 8:04PM EDT until October 20 at 1:00PM EDT by NWS Wakefield VA, United States of America Moderate Severe Storm United States active via WMO 40 min 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.