Dense Fog Advisory

Locations Affected

Stockton, CA ∙ Sacramento, CA ∙ Modesto, CA ∙ Elk Grove, CA ∙ Roseville, CA ∙ Vallejo, CA ∙ Fairfield, CA ∙ Vacaville, CA ∙ Tracy, CA ∙ Chico, CA

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Sacramento CA 1156 AM PST Mon Jan 19 2026 ...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 2 PM PST THIS AFTERNOON... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Carquinez Strait and Delta, Central and Southern Sacramento Valley, and Northern San Joaquin Valley. * WHEN...Until 2 PM PST this afternoon. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

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