NWS San Diego CAXH.A 0007September 30, 2026
Extreme Heat Watch: San Diego County Coastal Areas, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Inland Valleys and 3 more, CA
The National Weather Service office in San Diego issued an extreme heat watch for San Diego County Coastal Areas, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Inland Valleys and 3 more in California, in force until 9:00 p.m. local time on October 7. It was the 7th extreme heat watch the NWS office in San Diego issued in 2026.
Watch
In force for 5 days
The notice
- Issued by
- National Weather Service, San Diego CA
- Area
- San Diego County Coastal Areas, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Inland Valleys and 3 more
- State
- California
- Level
- Watch
- Issued
- 8:47 p.m. PDT, September 30, 2026
- In force from
- 10:00 a.m. PDT, October 2, 2026
- Expires
- 9:00 p.m. PDT, October 7, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Future
- VTEC event
- KSGX XH.A 0007
- 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 on the hottest days ranging from around 90 near the coast to the upper 90s to around 105 for the valleys possible. Low temperatures for coastal areas into the western valleys will warm into the lower to mid 70s during the weekend with those warm overnight temperatures continuing for next week. * WHERE...Orange County Coastal Areas, Orange County Inland Areas, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Coastal Areas, San Diego County Valleys, and Santa Ana Mountains and Foothills. * WHEN...From Friday morning through Wednesday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...A long-duration heat wave is expected to develop late this week and continue through much of next week into the following weekend with Moderate or greater HeatRisk for the coast and valleys and Major to Extreme HeatRisk for inland coastal areas into the western valleys.
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.