, Issued at 1232 PM PDT Mon Jun 1 2026 (This evening through Tuesday)
Upper level ridging today will bring warmer weather to the region, but it will be short lived. An upper level trough develops later this evening and then dives into southern California tonight. This will leave us caught between the ridge in the rough on Tuesday. Sensible weather will be breezy onshore winds this afternoon and evening, followed by a deepening marine layer. The marine layer is expected to be around 800-1000feet tonight, which will bring stratus to the coasts and some interior locations. Low temperatures for tonight will be in the upper 40s to low 50s where the marine layer occurs, the low the 50s to mid 50s for interior valleys, and in the mid 50s to low 60s for elevations within the thermal belt. Tuesday, temperatures will falter some due to the pattern shift. Highs will be in the upper 70s to upper 80s for interior valleys and areas of higher terrain, the upper 50s to low 70s along the Pacific Coast or San Francisco Bay.
..issued at 1232 PM PDT Mon Jun 1 2026 (Tuesday night through next Sunday)
The upper level pattern becomes zonal midweek leaving us with onshore flow, stratus and perhaps patchy drizzle and fog at night, and warmer interior valley and cooler coastal high temperatures. While this occurs an upper level low moves across the Gulf of Alaska and then into the PacNW by late Friday into Saturday. As this happens, our pattern shifts to a trough. Confidence remains high that cooler weather will be on tap. Depending on where it goes will determine the outcome of weather. Right now ensembles favor a trough over the west, which supports the cooler weather and the potential
(06z TAFS) Issued at 1001 PM PDT Mon Jun 1 2026
Stratus is moving back in along the coast and is expected to move into the interior overnight. Moderate confidence that localized fog will develop along the coast with IFR-LIFR conditions expected to impact HAF, MRY, and SNS. CIGs and VIS are expected to be slightly higher across the interior terminals where most sites stay IFR-MVFR tonight. HRRR guidance shows a much wider fog footprint along the Bay shoreline (impacting STS and OAK) compared to other models. The HRRR appears to be an outlier but ensembles generally agree that visibilities will drop overnight (ranging from 2-5 SM across the interior). Winds are easing across the region but gusty onshore winds return again during the afternoon/evening tomorrow.
Vicinity of SFO, Breezy onshore winds continue to decrease overnight before gusty onshore winds return tomorrow afternoon and evening. Moderate to high confidence in MVFR CIGs overnight with increasing confidence that IFR conditions will develop during the early morning. CIGs clear by late morning with VFR conditions persisting the rest of the day. LAMP guidance suggests a brief period of LIFR CIGs are possible between 12-16Z but confidence is low in this scenario.
SFO Bridge Approach, Similar to SFO.
Monterey Bay Terminals, IFR to LIFR CIGs expected overnight with dense fog possible during the early morning hours. CIGs have been trending downwards over the last few hours with WVI reporting LIFR CIGs as of 05Z. This is increasing confidence in LIFR CIGs developing more rapidly at MRY and SNS and continuing for much of the night. CIGs look to clear by late morning before MVFR-IFR CIGs return early (00-03Z). The current TAFs are slightly optimistic with regards to clearing tomorrow afternoon. HREF and LAMP guidance both offer more pessimistic forecasts with MVFR CIGs persisting at MRY throughout the day. Breezy onshore winds return during the day with
(tonight through next Sunday) Issued at 1001 PM PDT Mon Jun 1 2026
Light to moderate winds continue into early Tuesday with seas abating. Winds increase Tuesday with strong northerly winds returning by late Tuesday with gale force gusts returning mid week and seas building starting mid to late week. Gale force gusts and elevated seas will continue through the end of the forecast period.
Issued at 1229 AM PDT Mon Jun 1 2026
A Beach Hazards Statement remains in effect today through 5 AM Tuesday morning due to an increased risk for sneaker waves and strong rip currents caused by a long period southwest swell. On the buoys, this swell is being masked by stronger northwest swell waves, but careful analysis of the wave spectrum at the Point Reyes and Point Sur buoys reveals a southwest swell around 1 to 2 feet high with a period of 20 seconds. These long period swells result in increased risk of sneaker waves, potentially deadly waves which surge much further up the beach than expected and sweep unaware beachgoers into the ocean, and strong rip currents that can sweep the strongest swimmers away from shore. Never turn your back to the ocean! Inexperienced swimmers should stay away from the water. Observe the waves for 20 minutes before moving closer. Swim near a lifeguard if possible, and if caught in a rip current, swim parallel to the coast away from the current, and then at an angle to shore.
Ca, Beach Hazards Statement until 5 AM PDT Tuesday for CAZ006-505- 509-529-530.
Dense Fog Advisory from 2 AM to 9 AM PDT Tuesday for CAZ530.
PZ, Small Craft Advisory from 3 PM to 9 PM PDT Wednesday for SF Bay N of Bay Bridge.
Dense Fog Advisory from 2 AM to 9 AM PDT Tuesday for Mry Bay.
Small Craft Advisory from 3 PM Wednesday to 3 AM PDT Thursday for Mry Bay-Pigeon Pt to Pt Pinos 0-10 nm-Pigeon Pt to Pt Pinos 10-60 NM.
Small Craft Advisory from 9 PM Tuesday to 3 PM PDT Wednesday for Pt Arena to Pt Reyes 0-10 nm-Pt Pinos to Pt Piedras Blancas 0-10 nm-Pt Reyes to Pigeon Pt 0-10 nm.
Gale Watch from Wednesday afternoon through late Wednesday night for Pt Arena to Pt Reyes 0-10 nm-Pt Arena to Pt Reyes 10-60 NM-Pt Pinos to Pt Piedras Blancas 0-10 nm-Pt Reyes to Pigeon Pt 0-10 nm.
Small Craft Advisory from 3 PM Tuesday to 3 PM PDT Wednesday for Pt Arena to Pt Reyes 10-60 NM.
