NWS San Diego CAXH.W 0010October 4, 2026
Extreme Heat Warning: Orange County Inland, CA
The National Weather Service office in San Diego issued an extreme heat warning for Orange County Inland 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. California had 3 extreme heat warnings in October 2026, against 0 in an average October of 2008-2025 (California's extreme heat warnings by year).
Warning
In force for 5 days
The notice
- Issued by
- National Weather Service, San Diego CA
- Area
- Orange County Inland
- State
- California
- Level
- Warning
- Issued
- 4:28 a.m. PDT, October 4, 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
Extreme Heat Warnings in California since 2008Every warning type in California
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 103 and warm nights with low temperatures in the 70s expected. * WHERE...Orange County Inland Areas. * WHEN...Until 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.
The record around this notice
- Extreme Heat Warnings in California since 200828 a year
- Every warning type in California
- Extreme Heat Warning: what it means, and the states that get the most153 a year
- NWS notices, October 20262,010 in the month
- The latest from the National Weather Service
- Warning, watch or advisory: the three NWS levels