CALWIRE Weather Roundup (Tuesday, September 1, 2026)
By Calwire Weather Desk
3 active weather alerts statewide today, led by a frost advisory for Modoc County, plus coverage for Surprise Valley California, Lassen-Eastern Plumas-Eastern Sierra Counties.
Related: CALWIRE Weather Roundup (Tuesday, July 14, 2026) · CALWIRE Weather Roundup (Tuesday, July 21, 2026)
FROST ADVISORY — Modoc County
Frost Advisory issued September 1 at 4:01AM PDT until September 2 at 8:00AM PDT by NWS Medford OR
RED FLAG WARNING — Surprise Valley California
Red Flag Warning issued September 1 at 12:43AM PDT until September 1 at 11:00PM PDT by NWS Reno NV
LAKE WIND ADVISORY — Lassen-Eastern Plumas-Eastern Sierra Counties
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