Severe Heatwave ● Closed

Extreme Heat Watch issued October 4 at 11:38AM MST until October 8 at 8:00PM MST by NWS Phoenix AZ, United States of America

Event time: Last updated: 6 days ago 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 possible. Afternoon temperatures
104 to 110. Major Heat Risk.

* WHERE...Portions of Imperial County, including the Imperial Valley.

* WHEN...From Wednesday morning through Thursday evening.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.

Measurements

Coordinates39.9645, -100.8105
RegionImperial County West; Imperial Valley
Location Precisioncountry
Issuing AuthorityUnited States of America — us-noaa-nws-en
Cap UrgencyFuture
Cap CertaintyLikely
Cap Expires2026-10-05T03:30:00-07:00

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

This event as JSON · API and licence

Source updated 15 days ago (Oct 4, 2026 18:39 UTC) · we last heard from WMO Alert Hub (national weather services) 17 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: Imperial County West; Imperial Valley

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 14 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 14 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 14 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.