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Updated:January 23, 2026 6:30 am PST

Dense Fog Advisory DENSE FOG ADVISORY  
Sacramento County

  Effective: Fri, 1/23 12:47am Severity:  Moderate 
  Updated: January 23, 2026 6:30 am Urgency: Expected
  Expires: Fri, 1/23 11:00am Certainty: Likely

Areas Affected: Central Sacramento Valley - Southern Sacramento Valley - Carquinez Strait and Delta - Northern San Joaquin Valley
 
Alert Details:
* 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 11 AM PST this morning.

* IMPACTS...Low visibility could make driving conditions hazardous.

Information:
If driving, slow down, use your headlights, and leave plenty of
distance ahead of you.