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CALWIRE Weather Roundup (Friday, August 28, 2026)

By Calwire Weather Desk

  By Calwire Weather Desk

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28 active weather alerts statewide today, led by a heat advisory for Orange County Coastal, plus coverage for San Bernardino County Mountains, Coachella Valley.

Related: CALWIRE Stock Market Open Roundup (Friday, August 28, 2026) · CALWIRE Weather Roundup (Friday, July 17, 2026)

HEAT ADVISORY — Orange County Coastal

Heat Advisory issued August 28 at 5:03AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

HEAT ADVISORY — San Bernardino County Mountains

Heat Advisory issued August 28 at 5:03AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WARNING — Coachella Valley

Extreme Heat Warning issued August 28 at 5:03AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WARNING — Apple and Lucerne Valleys

Extreme Heat Warning issued August 28 at 5:03AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

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

Extreme Heat Warning issued August 28 at 5:03AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

HEAT ADVISORY — San Diego County Coastal Areas

Heat Advisory issued August 28 at 5:03AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

HEAT ADVISORY — Riverside County Mountains

Heat Advisory issued August 28 at 5:03AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WARNING — Santa Ana Mountains and Foothills

Extreme Heat Warning issued August 28 at 5:03AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WARNING — San Diego County Mountains

Extreme Heat Warning issued August 28 at 5:03AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WARNING — San Diego County Inland Valleys

Extreme Heat Warning issued August 28 at 5:03AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WARNING — Orange County Inland

Extreme Heat Warning issued August 28 at 5:03AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

RED FLAG WARNING — Santa Cruz Mountains

Red Flag Warning issued August 27 at 10:46PM PDT until August 28 at 3:00PM PDT by NWS San Francisco CA

RED FLAG WARNING — San Luis Obispo County Beaches

Red Flag Warning issued August 27 at 1:33PM PDT until August 28 at 3:00PM PDT by NWS Los Angeles/Oxnard CA

RED FLAG WARNING — San Luis Obispo County Mountains

Red Flag Warning issued August 27 at 1:33PM PDT until August 28 at 3:00PM PDT by NWS Los Angeles/Oxnard CA

EXTREME HEAT WARNING — Death Valley National Park

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Filed Under: Weather CALWIRE Weather Roundup Friday