Severe Heatwave ● Closed
Extreme Heat Warning issued October 1 at 12:29AM PDT until October 8 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 ranging
from the mid 80s to around 90 near the coast to the lower to mid
90s near higher coastal terrain expected. Nights will be very warm
with low temperatures mostly in the lower to mid 70s.
* WHERE...Orange County Coastal Areas.
* WHEN...From 10 AM Friday to 8 PM PDT Thursday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Orange County Coastal |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Expected |
| Cap Certainty | Likely |
| Cap Expires | 2026-10-01T15:30:00-07:00 |
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 reportAlso reported by: WMO WMO WMO WMO WMO
This event as JSON · API and licence
Source updated 18 days ago (Oct 1, 2026 07:30 UTC) · we last heard from WMO Alert Hub (national weather services) 40 seconds ago
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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: 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
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.