CALWIRE Weather Roundup (Friday, August 21, 2026)

8 active weather alerts statewide today, led by a fire weather watch for Siskiyou County from the Cascade Mountains East and South to Mt Shasta, plus coverage for Surprise Valley California, Central Siskiyou County Including Shasta Valley.

FIRE WEATHER WATCH — Siskiyou County from the Cascade Mountains East and South to Mt Shasta

Fire Weather Watch issued August 21 at 4:09AM PDT until August 22 at 9:00PM PDT by NWS Medford OR

FIRE WEATHER WATCH — Surprise Valley California

Fire Weather Watch issued August 20 at 10:52AM PDT until August 22 at 11:00PM PDT by NWS Reno NV

RED FLAG WARNING — Siskiyou County from the Cascade Mountains East and South to Mt Shasta

Red Flag Warning issued August 21 at 4:09AM PDT until August 21 at 9:00PM PDT by NWS Medford OR

RED FLAG WARNING — Central Siskiyou County Including Shasta Valley

Red Flag Warning issued August 21 at 4:09AM PDT until August 21 at 9:00PM PDT by NWS Medford OR

EXTREME HEAT WARNING — Eastern Mojave Desert, Including the Mojave National Preserve

Extreme Heat Warning issued August 21 at 4:05AM PDT until August 21 at 8:00PM PDT by NWS Las Vegas NV

EXTREME HEAT WARNING — Death Valley National Park

Extreme Heat Warning issued August 21 at 4:05AM PDT until August 23 at 8:00PM PDT by NWS Las Vegas NV

EXTREME HEAT WARNING — Coachella Valley

Extreme Heat Warning issued August 21 at 1:42AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WARNING — Imperial County Southwest

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Filed Under: Weather CALWIRE Weather Roundup Friday