, Issued at 1136 PM PDT Sun Mar 29 2026 (Tonight through Tuesday)
The upper level pattern is a bit interesting, with near zonal flow over the Bay Area and Central coast, while weak ridging flattens over the eastern Pacific. The forecast challenge for today will be high temperatures, as we should begin a cooling trend. Looking at the soundings from 12Z Sun and 0Z Mon, the 925mb and 850mb remained warm. Given the forecast isn't deviating too much, looked into the GEFS and ECMWF ensembles, plus deterministic model guidance. Both favored elevated temperatures in those heights with high temperatures being a few degrees warmer than the NBM out put. Opted to run with the NBM EXP to push temperatures a few degrees warmer.
..issued at 1136 PM PDT Sun Mar 29 2026 (Tuesday night through next Sunday)
The pattern change continues on Tuesday as an upper level disturbance passes over California. Rain chances continue into Wednesday into Thursday morning as a disturbances passes over the PacNW. Each time rain amounts look to be light, generally around 0.10" or less for interior locations and up to a 0.25" in the coastal mountains. After that, drier weather looks to be on tap as high pressure builds in from the west and the upper low slides digs into the intermountain. Breezier offshore/northerly winds are expected late in the week, especially for the interior mountains and areas of higher terrain.
(18z TAFS) Issued at 1035 AM PDT Mon Mar 30 2026
VFR conditions expected through the TAF period under a gradually lowering deck of high clouds. Winds will be gentle to moderate and diurnally driven. There is a slight but decreasing chance for stratus Tuesday morning. Disturbed weather is expected Tue-Thu with persistent mid level clouds, periods of gusty winds and occasional light rain.
Vicinity of SFO, The airport has been reporting calm winds for the last several hours. By 20Z onshore winds are expected to become established in the typical 280-300 direction. Winds will gradually increase to around 12-15 knots through the afternoon. Wind speeds will ease back to a gentle breeze through the evening and overnight hours. There is high confidence in VFR conditions persisting through the TAF period under lowering high clouds.
SFO Bridge Approach, Similar to SFO.
Monterey Bay Terminals, The brief fog impact has cleared and the terminals will enjoy VFR conditions through the day. There is a slight chance for stratus to move in around sunrise Tuesday, particularly at MRY. Otherwise high clouds will persist through the TAF period ahead of some disturbed weather Tuesday.
(today through Saturday) Issued at 1035 AM PDT Mon Mar 30 2026
Moderate northerly breezes will prevail today, backing to become southwesterly tomorrow. Fresh westerly breezes on Wednesday will increase and veer Thursday into Friday to become strong and northerly. Moderate seas will build to become rough to very rough Thursday into Friday. Widespread hazardous conditions will return Thursday as a result. Light rain showers are expected Tuesday morning through Thursday morning.
Ca, None. PZ, None.
