Dangerous Cold Persists through Monday; Wintry Weather from the Northern Plains to the Great Lakes

Bitter cold temperatures and dangerous wind chills will persist from Florida to the Northeast through Monday. Daily record low temperatures are forecast across the Southeast and Florida, with some all-time February low temperature records possible across Florida. An Alberta clipper will spread wintry precipitation across the Northern Plains today and into the upper Great Lakes into tonight. Read More >

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Last Map Update: Sun, Feb 1, 2026 at 8:28:40 pm PST

Watches, Warnings & Advisories

National Weather Service San Francisco Bay Area, CA

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National Weather Service Los Angeles, CA

High Surf Advisory

Dense Fog Advisory

Small Craft Advisory

Beach Hazards Statement

Thick Dense Fog Will Continue into Early this Week

Very High Transportation Risk - Dense Fog Advisory

Monday Quarter-Mile Visibility Chances

Tuesday Quarter-Mile Visibility Chances

High to Very High Transportation Risk will continue into early this Week. Visibility will be near zero at times. Dangerous fog can move in quickly, before you have time to react, drive carefully or make other plans.

A Dense Fog Advisory in effect until Noon Sunday across the San Joaquin Valley. Very High Transportation Risk due to visibility likely dropping to less than 200 feet and as low as zero. Use caution while driving by slowing down, manually turning on head lights, and keep your distance from other vehicles. Also, there is high confidence that dense fog will redevelop each night and morning into this week.

An upper level ridging pattern will continue over California through midweek, resulting in additional periods of dense fog during the mornings. There is moderate confidence (50-60%) for visibilities less than one quarter mile in the San Joaquin Valley on Monday.

An upper level ridging pattern will continue over California through midweek, resulting in additional periods of dense fog during the mornings. There is moderate confidence (60-70%) for visibilities less than one quarter mile in the San Joaquin Valley on Tuesday.