NWS San Diego CAXH.W 0010October 1, 2026
Extreme Heat Warning: Santa Ana Mountains and Foothills, CA
The National Weather Service office in San Diego issued an extreme heat warning for Santa Ana Mountains and Foothills in California, in force until 8:00 p.m. local time on October 8. It was the 10th extreme heat warning the NWS office in San Diego issued in 2026.
Warning
Issued12:29 a.m. PDT, October 1, 2026
In force from10:00 a.m. PDT, October 2, 2026
Expires8:00 p.m. PDT, October 8, 2026
In force for 6 days
The notice
- Issued by
- National Weather Service, San Diego CA
- Area
- Santa Ana Mountains and Foothills
- State
- California
- Level
- Warning
- Issued
- 12:29 a.m. PDT, October 1, 2026
- In force from
- 10:00 a.m. PDT, October 2, 2026
- Expires
- 8:00 p.m. PDT, October 8, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Expected
- VTEC event
- KSGX XH.W 0010
- Official source
- National Weather Service: the notice at its source
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
* WHAT...Dangerously hot conditions with high temperatures in the mid 90s to 104 expected. Night will be very warm with low temperatures mostly in the mid 60s to mid 70s. * WHERE...Santa Ana Mountains and Foothills. * WHEN...From 10 AM Friday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
What the agency told people to do
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.