, Issued at 1215 AM PDT Fri Jun 12 2026 (Today and tonight)
GOES-West nighttime microphysics imagery reveals a much-welcomed surge of stratus returning to Pacific coastal locations since the evening hours. This has resulted in broken/overcast skies to communities such as Monterey, Salinas, Santa Cruz, and Half Moon Bay, as well as the western half of San Francisco. Areas of fog have also been reported. Some locations in the Santa Cruz Mountains are running 10-15 deg F cooler compared to 24 hours ago. Following a hot day for interior areas, temperatures have been running generally a few to several degrees warmer.
Upper-level ridge remains the dominate synoptic feature over the eastern Pacific. For Friday, areas covered in Moderate HeatRisk will be primarily reduced to interior locations of the East Bay and South Bay. For these locations, the Heat Advisory continues through Friday evening. Temperatures will continue to moderate region-wide on Saturday.
High tide flooding will occur nightly along the Bayshore through the middle of next week. The combination of an upcoming new moon and lunar perigee on Sunday, and 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 1.8 feet above normal through the weekend. 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.
..issued at 1215 AM PDT Fri Jun 12 2026 (Saturday through Thursday)
A short-wave trough will cut along the outer periphery of the eastern Pacific ridge over the weekend. This will promote further cooling for interior locations into the second half of the weekend. Coastal locations can expect the usual June stratus. While temperatures will return closer to middle-June climatology, the main hazards will be the southerly swell along the coast, plus the coastal flooding associated with the high tides
(12z TAFS) Issued at 503 AM PDT Fri Jun 12 2026
Coastal stratus and fog /IFR-VLIFR/ stretches from coastal Sonoma County southward along the Big Sur Coast. Stratus and fog are reaching in through the Golden Gate to the East Bay. Stratus and fog also stretches into the Salinas Vally. Elsewhere inland it's VFR. Radiative cooling until daybreak will likely result in patchy morning valley stratus and fog /IFR-LIFR/. The marine layer depth is ~ 1300 feet. Within the marine layer temperature inversion it is still warm at this hour with 70s to lower 80s. Diurnal surface warming and vertical mixing will improve ceilings and visibilities to MVFR-VFR back near the coastline today. High resolution model output shows coastal stratus and fog /IFR-LIFR/ redevelop tonight and Saturday morning. Winds will be primarily onshore during the 12z TAFs.
Vicinity of SFO, Low to moderate confidence VFR through daybreak. A greater amount of water vapor per higher surface dew point temps have arrived while surface temperatures have trended cooler. This combining with radiative cooling may result in a patch or two of low stratus and/or fog until about daybreak. The 12z SFO TAF for the time being advertises VFR, will amend as needed. VFR for late morning, afternoon and evening. Stratus /IFR/ is forecast for tonight and Saturday morning. West to northwest wind 5 to 12 knots.
SFO Bridge Approach, Similar to SFO.
Vicinity of SJC and OAK, Residual southerly winds from yesterday's robust southerly surge of wind and stratus is still going at KSJC. 5 am pressure gradient SNS-SJC was 1.7 mb. It may take time i.e. until late morning or perhaps early afternoon for a wind shift to northwesterly at SJC today. The temp/dew point temp difference is still fairly large at this hour, likely enough to get through daybreak without patchy stratus and/or fog to form, however will monitor and amend TAF as needed. For OAK Airport, stratus and/or fog is nearby; tempo group indicated for morning stratus /LIFR/ until 16z. Otherwise VFR today, then stratus /IFR/ redevelops tonight and Saturday morning. Northwest wind 5 to 10 knots.
Monterey Bay Terminals, Stratus and/or fog /IFR-VLIFR/ through much of the morning, improving conditions to MVFR-VFR during the afternoon. Stratus and/or fog /IFR-LIFR/ redevelop and move inland tonight and Saturday morning. Mainly onshore winds 5 to 15 knots.
(today through Wednesday) Issued at 412 AM PDT Fri Jun 12 2026
Small craft advisory conditions linger in the northern outer waters while winds overall will diminish to moderate to gentle breezes through the weekend and early next week. Seas will subside through early next week.
Issued at 1241 PM PDT Thu Jun 11 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. 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!
Ca, Coastal Flood Advisory until 3 AM PDT Wednesday for CAZ006-506- 508.
Heat Advisory until 7 PM PDT this evening for CAZ510-513>515.
PZ, Small Craft Advisory until 3 AM PDT Saturday for Pt Arena to Pt Reyes 10-60 NM.
