Headline:
Extreme Heat Watch issued August 23 at 9:40PM PDT until August 28 at 8:00PM PDT by NWS San Diego CA
Event:
Extreme Heat Watch
Urgency:
Future
Effective:
August 23, 2026 - 9:40pm
Expires:
August 24, 2026 - 6:15am
Description:
* WHAT...Temperatures 90 to 100 for Inland Orange County, 90 to 102
for the San Diego County Valleys, 100 to 108 for the Inland Empire
and 89 to 101 in the mountains.
* WHERE...Orange County Inland Areas, Riverside County Mountains,
San Bernardino and Riverside County Valleys-The Inland Empire, San
Diego County Mountains, San Diego County Valleys, and Santa Ana
Mountains and Foothills.
* WHEN...For the Heat Advisory, until 10 AM PDT Tuesday. For the
Extreme Heat Watch, from Tuesday morning through Friday evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Hot temperatures may cause heat illnesses.
* ADDITIONAL DETAILS...Low temperatures 5 to 10 degrees above normal
will limit relief from the heat. Increasing temperatures into the
middle of next week will increase the threat of heat-related
illness across populations.
Instruction:
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Area Description:
San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Inland
Forcast Office:
NWS San Diego CA
Sender:
w-nws.webmaster@noaa.gov