, Issued at 1242 PM PDT Tue May 26 2026 (This evening through Wednesday)
Cool conditions are forecast to prevail today in wake of the early morning frontal passage. Temperatures this afternoon are forecast to be in the middle-to-upper 50s to middle 60s near the coast with middle 60s to lower 70s across the interior with amble amount of sunshine. Speak of sunshine, there is also a chance of rain showers over Napa County through this evening as the forecast calls for generally 150-250 J/kg of most unstable CAPE. Some of these rain showers (if they develop) may move across the interior East Bay this evening before the loss of daytime heating reduces the instability aloft. It will also remain breezy through the evening and into tonight, especially near the coast and in the higher terrain across the Bay Area and Central Coast. Onshore winds will continue with gusts of 30-40 mph with isolated gusts up to 50 mph across the North Bay Interior Mountains and East Bay Hills.
As the cut-off low pressure lingers over northern (today) and central (tomorrow through Thursday), we are forecasting unsettled weather conditions to prevail. However, wind speeds are forecast to diminish slightly. With similar conditions expected on Wednesday, the greatest potential to see more than 0.10" (15-25% probability) will be across the interior Bay Area and Monterey/San Benito County. There is also a chance of thunderstorms, yet they largely remain less than 15%.
..issued at 1242 PM PDT Tue May 26 2026 (Wednesday night through next Monday)
On Thursday, there is a greater potential for rain showers across the region with the mid/upper level cut-off low forecast to be just off of the Bay Area/Central Coast coastline. Thus, PWAT values are forecast to be around 1.00". However, the thunderstorm potential will be less as the atmosphere becomes more stable. The NBM probabilities of seeing greater than 0.25" remain around 10-25% from 11 PM Wednesday night - 11 PM Thursday morning. That said, the probabilities from the convective-allowing ensemble guidance is greater than 50% of reaching or exceeding 0.25" across places outside of the North Bay. All that said, looking like a wide range of possibilities with varying outcomes as far as rainfall amounts go, yet widespread flooding concerns remains very low. Just expect wet roadways across the region during periods of rainfall.
The low pressure system responsible for the unsettled weather early this week will finally shift eastward with a shortwave ridge building in to the Bay Area/Central Coast. However, more zonal flow will bring a slight warming and drying trend to the region and is forecast to prevail into early next week.
(18z TAFS) Issued at 1054 AM PDT Tue May 26 2026
MVFR-VFR with a general decrease in cloud cover today then increasing cloud cover with a few areas of light rain possible over the north Central Coast Wednesday morning.
Vicinity of SFO, VFR. West wind gusting to 35 knots through 05z this evening, wind diminishing to 10 to 20 knots tonight and Wednesday.
SFO Bridge Approach, Similar to SFO.
Monterey Bay Terminals, The post frontal environment is bringing VFR conditions through the day into the evening. Moderate onshore breezes (12-15 kts) prevail through the TAF period with wind gusts up to 30 kts. Around 02-03Z Wednesday, MVFR ceilings begin to develop and deepen over the terminals. Moderate, gusty winds are expected to diminish late Tuesday night into the overnight hours and become more gentle (5-10kts). There may be some passing light rain early Wednesday morning (12Z) at both terminals, though it is not expected to be impactful if any develops.
(today through Sunday) Issued at 1039 AM PDT Tue May 26 2026
Fresh northwest winds will develop with widespread strong to gale force gusts over the coastal waters today. Gusty winds will develop over the bays as well. Rough seas will build to between 12 to 15 feet today into late week.
Ca, Beach Hazards Statement through Wednesday morning for CAZ006-505- 509-529-530.
PZ, Small Craft Advisory until 3 AM PDT Wednesday for SF Bay N of Bay Bridge.
Small Craft Advisory until 3 PM PDT this afternoon for Mry Bay- Pigeon Pt to Pt Pinos 0-10 nm-Pt Arena to Pt Reyes 0-10 nm- Pt Reyes to Pigeon Pt 0-10 nm.
Gale Warning until 9 PM PDT this evening for Mry Bay-Pigeon Pt to Pt Pinos 0-10 nm-Pt Arena to Pt Reyes 0-10 nm-Pt Reyes to Pigeon Pt 0-10 nm.
Gale Warning until 3 AM PDT Wednesday for Pt Pinos to Pt Piedras Blancas 0-10 nm.
Small Craft Advisory until 9 AM PDT Wednesday for Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 10-60 NM.
