, 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.
(12z TAFS) Issued at 434 AM PDT Mon Mar 30 2026
VFR. Diurnally driven moderate onshore winds return this afternoon and evening before winds ease again overnight, becoming offshore to locally variable. High clouds continue to filter in across the region with gradual lowering (but still VFR ceilings) expected tonight into tomorrow. There is a low chance for drizzle after 12Z on Tuesday but confidence is too low to include in the current TAFs. Rain becomes more likely Wednesday into Thursday.
Vicinity of SFO, VFR. Winds remain light through late morning before moderate onshore winds to around 15 knots develop this afternoon and evening before weakening again overnight.
SFO Bridge Approach, Similar to SFO.
Monterey Bay Terminals, VFR. Light, offshore to variable winds continue through the rest of the morning before onshore winds strengthen to around 8 to 12 knots this afternoon and evening. High level clouds persist through the TAF period but will see gradual lowering tonight into tomorrow.
(today through Saturday) Issued at 434 AM PDT Mon Mar 30 2026
A gentle to moderate northerly breeze continues through midweek. Winds briefly shift more southerly late Tuesday into Wednesday as a weak cold front passes through with northerly winds returning Thursday. Hazardous conditions for small craft return late week as northwest winds strengthen to near gale force and seas build to 10 to 12 feet.
Ca, None. PZ, None.
