Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

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Last Map Update: Mon, Jan 19, 2026 at 1:18:38 am PST

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National Weather Service San Francisco Bay Area, CA

Dense Fog Advisory

Freezing Fog Advisory

Beach Hazards Statement

Air Quality Alert

Air Stagnation Advisory

Moderate Risk of Sneaker Waves Tuesday

There is a moderate risk of sneaker waves on Northwest California beaches on Tuesday as a long period swell builds into the waters. Sneaker waves are larger waves that seem to come out of nowhere and run farther up the beach slope than normal. Sneaker waves can catch you off guard and quickly pull you into the ocean where survival is unlikely because of strong currents, turbulent surf, and very cold water. Do not be fooled by an ocean that looks calm. There can be up to 20 minutes of small waves right before a sneaker wave strikes. Avoid steep beaches, rocks, and jetties. Stay far back from the surf and do not go in after dogs that get pulled into the surf. Dogs almost always get out on their own.