CALWIRE Weather Roundup (Sunday, August 23, 2026)

By Calwire Weather Desk

  By Calwire Weather Desk

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17 active weather alerts statewide today, led by a extreme heat watch for San Diego County Coastal Areas, plus coverage for Apple and Lucerne Valleys, San Bernardino County Mountains.

EXTREME HEAT WATCH — San Diego County Coastal Areas

Extreme Heat Watch issued August 23 at 5:17AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WATCH — Apple and Lucerne Valleys

Extreme Heat Watch issued August 23 at 5:17AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WATCH — San Bernardino County Mountains

Extreme Heat Watch issued August 23 at 5:17AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WATCH — San Bernardino and Riverside County Valleys-The Inland Empire

Extreme Heat Watch issued August 23 at 5:17AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WATCH — Cuyama Valley

Extreme Heat Watch issued August 23 at 12:06AM PDT until August 28 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

EXTREME HEAT WATCH — Santa Clarita Valley

Extreme Heat Watch issued August 23 at 12:06AM PDT until August 28 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

EXTREME HEAT WATCH — Catalina and Santa Barbara Islands

Extreme Heat Watch issued August 23 at 12:06AM PDT until August 28 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

EXTREME HEAT WATCH — Western Antelope Valley Foothills

Extreme Heat Watch issued August 23 at 12:06AM PDT until August 28 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

HEAT ADVISORY — Santa Clarita Valley

Heat Advisory issued August 23 at 12:06AM PDT until August 25 at 10:00AM PDT by NWS Los Angeles/Oxnard CA

HEAT ADVISORY — Cuyama Valley

Heat Advisory issued August 23 at 12:06AM PDT until August 25 at 10:00AM PDT by NWS Los Angeles/Oxnard CA

HEAT ADVISORY — Catalina and Santa Barbara Islands

Heat Advisory issued August 23 at 12:06AM PDT until August 25 at 10:00AM PDT by NWS Los Angeles/Oxnard CA

HEAT ADVISORY — San Bernardino and Riverside County Valleys-The Inland Empire

Heat Advisory issued August 23 at 5:17AM PDT until August 25 at 10:00AM PDT by NWS San Diego CA

HEAT ADVISORY — San Bernardino County Mountains

Heat Advisory issued August 23 at 5:17AM PDT until August 25 at 10:00AM PDT by NWS San Diego CA

EXTREME HEAT WARNING — Coachella Valley

Extreme Heat Warning issued August 23 at 5:17AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

SPECIAL WEATHER STATEMENT — San Diego County Coastal Areas

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