textproduct: San Francisco Bay Area

KEY MESSAGES

Updated at 233 PM PST Mon Nov 9 2026

- Seasonally warm, dry conditions through midweek; unsettled weather returns late week into next week

- Coastal flooding due to high tides continues through Friday

- Hazardous beach conditions continue through tonight and return late week into the weekend

SHORT TERM

Issued at 233 PM PST Mon Nov 9 2026 (This evening through Tuesday night)

Upper level ridging prevails over the West Coast (and most of the United States) heading into Tuesday. Expect foggy conditions to develop across the North Bay Valleys, along the San Francisco and San Pablo Bayshores and bays, the delta, and potentially the interior East Bay Valleys. The conditions are favorable for fog to develop again tonight with decent moisture and good overnight radiational cooling thanks to a lack of mid/high level clouds. Bayshore locations and any mariners on the San Francisco/San Pablo Bays or the Delta should be prepared for fog, likely dense, to develop early Tuesday morning. If driving, remember to slow down and allow extra time to reach your destination. If boating in fog, turn on all running lights, slow down, and listen for any other boats that may be nearby. As of 1PM Monday, visibilities are still struggling to improve along portions of the bay shoreline from this morning's fog. Tomorrow will likely be similar with reduced visibilities and patchy fog persisting into the late morning/early afternoon hours.

Despite early morning fog, high temperatures will warm back into the 70s across the interior and 60s to 70s along the coast by Tuesday afternoon. This is brought to us by persistent upper level ridging over the Western US and 850 mb temperatures around 12-16 C. While pleasantly warm, these temperatures are around 10 degrees above normal for this time of year. Morning low temperatures remain in the 50s with slightly cooler lows in the 40s across the North Bay. While the high temperatures don't make it feel like winter is coming, there is a pattern change expected late week into the weekend.

AVIATION

(18Z TAFS) Issued at 1013 AM PST Mon Nov 9 2026

After a foggy morning, visibility and ceilings are beginning to lift. Expect VFR area wide thereafter through late evening. Impacts from stratus and fog are anticipated to develop once again after midnight and continue through at least mid-morning Tuesday.

Vicinity of SFO...Currently LIFR but starting to lift and should clear completely around 20z. VFR this afternoon with onshore flow. Moderate (60%) confidence in IFR ceilings developing at the terminal late tonight.

SFO Bridge Approach...Low lying clouds are still covering the approach between Palo Alto and the terminal, but should clear by 20z. Moderate (60%) chance of return of low lying clouds tonight.

Monterey Bay Terminals...VFR is expected to prevail through the forecast period due to a weak but persistent fetch of offshore flow across the Monterey Bay area.

MARINE

(Tonight through next Saturday) Issued at 233 PM PST Mon Nov 9 2026

Rough to very rough seas will persist through this evening, beginning to gradually subside overnight through the middle of the week with moderate to fresh northerly breezes. Sea state will become dynamic once again by the second half of the work week into next weekend with long period west/northwest swell up to 18 seconds late in the forecast period.

BEACHES

Issued at 330 AM PST Mon Nov 9 2026

Beach Hazards Statement:

Beach Hazard Statement remains in effect. Latest buoy obs show the moderate swell and moderate period continue to produce an energetic surf zone. As such, large shore break, sneaker waves, and stronger rip currents will be possible. Breaking waves of 12 to 16 feet are expected at exposed beaches and up to 18 ft at favored break point. Spring tides will also increase the currents and bring higher tides than normal. Waves can sweep across the shoreline without warning, pulling people into the sea from beaches, jetties, and rocks. Stay off of jetties, piers, rocks, and other waterside infrastructure. Remain out of the water if you're not an experienced swimmer to avoid hazardous surf and never turn your back on the ocean! There may be a lull in wave activity midweek, but longer range forecasts show additional swells impacting the coast next weekend.

Coastal Flood Advisory:

A combination of high astronomical tides and thermal expansion from warmer than normal water will result in tidal flooding concerns across Bayshore locations in the San Francisco, San Pablo, and Monterey Bays. At the San Francisco tide gauge, high tide is expected to be 1.6 ft above normal (7.4 ft MLLW) at 10:35 AM Monday 11/9, 1.5 ft above normal (7.3 ft MLLW) at 11:04 AM Tuesday 11/10, 1.4 ft above normal (7.2 ft MLLW) at 11:35 AM Wednesday 11/11, 1.4 ft above normal (7.2 ft MLLW) at 12:10 PM Thursday 11/12, 1.2 ft above normal (7.0 ft MLLW) at 12:49 PM Friday 11/13. These predictions include up to 1.5 ft of surge that will enhance the astronomical tide and flooding threat. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively. In addition, long-period swell will create hazardous conditions along the Pacific coast beaches with an increased risk of sneaker waves and rip currents.

These Spring Tides are due to a new moon on Monday, which is much lower in the sky this time of year compared to a full moon. In 2 weeks, the astronomical tides will be about 0.8' higher than this round, and the total water level could be more than a foot higher if we get SW winds and/or lower pressure. This combination would bring the total water level near the 1% annual exceedance probability (2.85' above normal), or a 1 in 100 year event. Something to keep an eye on for the week of Thanksgiving.

Sarment/Flynn/MM

MTR WATCHES/WARNINGS/ADVISORIES

CA...Beach Hazards Statement until 10 PM PST this evening for CAZ006- 505-509-529-530.

Coastal Flood Advisory until 4 PM PST Friday for CAZ006-506-508- 530.

Coastal Flood Advisory until noon PST Tuesday for CAZ505-509-529.

PZ...Small Craft Advisory until 9 PM PST this evening for Mry Bay- Pigeon Pt to Pt Pinos 0-10 nm-Pigeon Pt to Pt Pinos 10-60 NM-Pt Pinos to Pt Piedras Blancas 0-10 nm.

Small Craft Advisory until 3 PM PST this afternoon for Pt Arena to Pt Reyes 0-10 nm-Pt Arena to Pt Reyes 10-60 NM-Pt Reyes to Pigeon Pt 0-10 nm.