Cold Weather Advisory

Locations Affected

Santa Rosa, CA ∙ Napa, CA ∙ Petaluma, CA ∙ Novato, CA ∙ San Rafael, CA ∙ Bloomfield, CA ∙ Strawberry, CA ∙ Saint Helena, CA ∙ Geyserville, CA ∙ Terra Linda, CA

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service San Francisco CA 259 AM PST Tue Feb 17 2026 ...COLD WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST WEDNESDAY... * WHAT...Cold conditions with temperatures as low as 34 expected. * WHERE...Southern Salinas Valley/Arroyo Seco and Lake San Antonio, North Bay Interior Mountains, and North Bay Interior Valleys. * WHEN...From midnight tonight to 9 AM PST Wednesday. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Prolonged exposure to the cold conditions will lead to hypothermia for people, pets, and livestock. Cold conditions may damage or kill sensitive crops, plants, and vegetation if appropriate precautions are not taken. PRECAUTIONARY/PREPAREDNESS ACTIONS... Ensure portable heaters are working properly and are used correctly to avoid sparking a fire indoors. Do not use generators or grills inside as carbon monoxide poisoning can result. Check with your local, city, or county officials for information on available warming centers. Be sure to dress in layers if outdoors. Make sure that pets and livestock have adequate food, unfrozen water, and warmth. Cover or tend to sensitive crops, plants, and vegetation.

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