textproduct: San Francisco Bay Area

KEY MESSAGES

Updated at 1230 PM PDT Fri Jun 12 2026

- Hot and dry today for interior locations with a moderate risk of heat-related illnesses

- Minor coastal flooding due to higher than normal high tides anticipated across coastal regions of the San Francisco Bay Area

- Increased risk of sneaker waves and strong rip currents along beaches this weekend

SHORT TERM

Issued at 1230 PM PDT Fri Jun 12 2026 (This afternoon through Saturday)

The upper-level pattern continues to be influenced by a ridge over the eastern Pacific. This maintains the above normal high temperatures observed over the last several days and today, leading to a moderate risk for heat related illnesses for the eastern areas. The Heat Advisory for the interior East Bay and South Bay will end this evening.

GOES-West visible satellite imagery shows the stratus continues to move back over the marine environment clearing most of the cities along the Pacific Coast. Otherwise sunny skies across the area. Stratus will continue to push westward for the next several hours eventually moving back inland this evening into the overnight period following typical June stratus patterns.

High tide flooding will continue to occur nightly along the Bayshore through the middle of next week. The combination of an upcoming new moon and lunar perigee on Sunday, about 7 inches of additional tidal anomaly from a combination of storm surge, thermal expansion of the Eastern Pacific, and about 2 inches inches of Sea Level Rise since the vertical datums were established in the 80s and 90s will add up to bring tides up to 2.0 feet above normal through early next week. While lower than the historic tidal flooding in January (peaked at 2.6 ft) the tides this weekend could end up being the highest observed in the Summer, beating the current record of 1.7 ft from July 2022.

LONG TERM

Issued at 1230 PM PDT Fri Jun 12 2026 (Saturday night through next Thursday)

A short-wave trough will cut along the outer periphery of the eastern Pacific ridge over the weekend. This will promote a cooling trend for interior locations into the second half of the weekend lessening the risk for heat related illnesses to minor. Coastal locations can expect the usual June stratus. While temperatures will return closer to middle- June climatology, the main hazards into early next week will be the southerly swell along the coast, plus coastal flooding associated with the high tides.

AVIATION

(00Z TAFS) Issued at 435 PM PDT Fri Jun 12 2026 Satellite imagery highlights coastal stratus and fog pushing onshore this evening as the marine layer advances inland. Current coastal observations indicate a rapid drop in ceiling heights to IFR/LIFR with the arrival of the status. Inland locations will experience much better conditions, insulated from the marine influence, with generally clear skies and VFR conditions prevailing. Across SF Bay, moderate confidence that low stratus will result in IFR ceilings by early Saturday morning.

Vicinity of SFO...High confidence in VFR conditions persisting through the evening. Moderate confidence in IFR ceilings by early Saturday morning as low stratus pushes through the Golden Gate and enters SF Bay. The marine layer will remain shallow, keeping ceilings low but also allowing stratus to burn off by mid Saturday morning (15-17Z). Winds from the NW 10-20 kt will subside below 10 kt around or shortly after sunset, with NW winds returning Saturday afternoon.

SFO Bridge Approach...Similar to SFO.

Vicinity of SJC and OAK...High confidence in VFR conditions through the evening. Stratus will increase through the Golden Gate overnight, with moderate confidence in IFR ceilings arriving at KOAK 08-11Z. VFR conditions should return 15-17Z as a shallow marine layer burns off. Confidence is low that stratus will push all the way to KSJC, therefore VFR conditions are forecast through Saturday morning. Winds out of the NW 10-15 kt will subside overnight, then pick up again Saturday afternoon.

Monterey Bay Terminals...Satellite imagery highlights the redevelopment and expansion of stratus inland, now poised just west of the KSNS airfield. Upstream observations highlight IFR/LIFR cig heights as stratus fills in, with continued maintenance of low-level stratus overnight. Variable and light winds overnight across KMRY with some onshore flow holding on a little longer through the valley across SNS.

MARINE

(Tonight through next Wednesday) Issued at 435 PM PDT Fri Jun 12 2026

A gentle southerly breeze and moderate to rough seas with a low south southwest swell persist across most of the coastal waters. However, small craft advisory conditions linger in the northern outer waters where winds remain northerly through Saturday morning. The winds will remain fairly consistent through the weekend as the seas subside.

BEACHES

Issued at 1230 PM PDT Thu Jun 12 2026

Long period southerly swell will continue through the weekend, especially for south and southwest facing beaches. Hazardous beach conditions are advertised, specifically for moderate to steeply sloped beaches along the Pacific Coast of the North Bay, San Mateo, Santa Cruz counties. Hazardous beach conditions will expand to include Pacific coast beaches along the central coast and the Bay Area coast starting Saturday evening through Tuesday morning. Be sure check beach conditions before you head out. Sneaker waves will run up the beach much farther than other waves, potentially catching beachgoers by surprise and resulting in people being swept into the water. Rip currents are strong enough to pull the strongest swimmers away from shore. Swim near a lifeguard if possible. Stay back from the beach, and away from jetties, piers, beachside rocks, and other infrastructure near the water. Never turn your back to the ocean!

MTR WATCHES/WARNINGS/ADVISORIES

CA...Coastal Flood Advisory until 3 AM PDT Wednesday for CAZ006-506- 508.

Beach Hazards Statement from late Saturday night through late Tuesday night for CAZ006-505-509-529-530.

Coastal Flood Advisory from 7 PM Saturday to 3 AM PDT Tuesday for CAZ505-509-529-530.

Heat Advisory until 7 PM PDT Saturday for CAZ510-513>515.

PZ...Small Craft Advisory from 9 AM to 9 PM PDT Saturday for Pt Pinos to Pt Piedras Blancas 0-10 nm.

Small Craft Advisory until 3 AM PDT Saturday for Pt Arena to Pt Reyes 10-60 NM.