textproduct: San Francisco Bay Area

KEY MESSAGES

Updated at 158 AM PST Sun Feb 1 2026

- Above normal temperatures and dry conditions through the week

- Minor coastal flooding today during high astronomical tide for bayshore locations along the San Francisco Bay, San Pablo Bay, and Monterey Bay

- Hazardous beach conditions through Monday at Pacific Coast beaches

SHORT TERM

Issued at 158 AM PST Sun Feb 1 2026 (Today and tonight)

Fog has been observed overnight in the North Bay and East Bay Interior Valleys. High clouds streaming in from a dying cold front are adding complexity to the fog forecast both in terms of viewing it from space via satellite as well as seemingly not letting it get widespread like initially thought. Still, if you are driving this morning, slow down, use your low-beam headlights, and leave plenty of distance ahead of you. The aforementioned cold front will be the main feature today. Rain can be seen to the north on our neighbor Eureka's radar, but this is not expected to hold together down here. Instead, what we can expect is a pause in the warming trend, a return of onshore flow, and an extra colorful sunrise/sunset from the cloud shield. One more round of minor coastal flooding is expected during high astronomical tide this morning for bayshore locations along the San Francisco Bay, San Pablo Bay, and Monterey Bay. Hazardous beach conditions continue at Pacific Coast beaches, read more in the BEACHES section.

LONG TERM

Issued at 158 AM PST Sun Feb 1 2026 (Monday through Saturday)

A warming trend commences Monday and peaks Wednesday as longwave upper-level ridging builds into place and sets up its axis over the region. Sensible weather wise, this will result in temperatures of 10 degrees above normal. Global ensemble clusters are in agreement that the aforementioned ridge will begin to get shoved east on Thursday by upper-level shortwave troughing that will skirt the region Friday into Saturday. This will relatively cool temperatures with no rain in the official forecast.

AVIATION

(18Z TAFS) Issued at 923 AM PST Sun Feb 1 2026

Fog has been localized this morning to the North Bay and East Bay Valleys with visibilities as low as 1/4SM reported at STS and LVK. Any lingering fog will mix-out as the morning progresses with some afternoon haze. Winds this afternoon will generally be onshore up to 10 kt. Best potential for overnight fog development will be in the usual fog-prone North Bay and East Bay Valleys.

Vicinity of SFO...VFR conditions are forecast to prevail. Light winds this morning will become west/northwest up to 10 kt in the afternoon.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...VFR. Light offshore morning winds will switch onshore around mid-day. Low confidence with overnight fog/stratus.

MARINE

(Today through Friday) Issued at 923 AM PST Sun Feb 1 2026

Hazardous marine conditions return today with building seas and increasing northerly winds. Conditions improve Tuesday with moderate seas and a gentle northerly breeze prevailing through Thursday.

BEACHES

Issued at 333 AM PST Fri Jan 30 2026

Hazardous beach conditions will continue through Monday at all Pacific Coast beaches. Long period westerly swell will bring an increased risk for sneaker waves and strong rip currents with breaking waves of 14 to 19 feet. Remember: stay off of jetties, piers, rocks, and other waterside infrastructure, remain out of the water, and never turn your back on the ocean!

MTR WATCHES/WARNINGS/ADVISORIES

CA...Beach Hazards Statement through Monday morning for CAZ006-505- 509-529-530.

Coastal Flood Advisory until noon PST today for CAZ006-506-508- 529-530.

PZ...Small Craft Advisory from 3 PM this afternoon to 3 PM PST Monday for Pt Arena to Pt Reyes 0-10 nm.

Small Craft Advisory from 9 PM this evening to 3 PM PST Monday for Pigeon Pt to Pt Pinos 0-10 nm-Pt Pinos to Pt Piedras Blancas 0-10 nm.

Small Craft Advisory until 3 PM PST this afternoon for Pt Pinos to Pt Piedras Blancas 0-10 nm.

Small Craft Advisory until 9 PM PST Monday for Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 10-60 NM.