Issued at 917 AM PST Fri Nov 7 2025
Went ahead and canceled the Dense Fog Advisory for the North Bay Interior Valleys as widespread dense fog is no longer anticipated. Light rain continues over the North Bay, especially the favored upslope areas of the region. However, this will primarily occur through the morning before diminishing in coverage by this afternoon. Low clouds across the North Bay and Bay Area are forecast to gradually clear by late morning or early afternoon and give way to mostly sunny skies across the region. This will result in a slight warming trend with afternoon temperatures expected to be in the low- to- mid 70s across the interior and 60s near the coast, up to 6 degrees above normal. No other updates are anticipated at this time.
RGass
, Issued at 1244 AM PST Fri Nov 7 2025 (Today and tonight)
Satellite imagery reveals low clouds across the North Bay valleys, with scattered stratus extending down into parts of San Francisco and the western side of Oakland, with additional patches across central San Benito County to the south of Hollister. Farther afield, a weak cold front is coming through the North Coast and will keep together just long enough to bring a chance for light rain across the western parts of the North Bay this morning, particularly the Sonoma coastal ranges and the Mayacamas, with chances for orographically-induced showers extending as far south as the Half Moon Bay region. Accumulations will be light, around a few hundredths of an inch at most.
Light offshore flow has also developed across the higher elevations of the Central Coast, with northeasterly winds at the 925 mb level. As for the Bay Area, the SFO-WMC gradient was +4.2 mb as of midnight, and remains generally onshore through the late afternoon and evening hours today. This timeframe is also when the 925 mb winds will turn towards the northeast. In any case, fire weather concerns remain low with the fire weather indices remaining below seasonal averages.
All of this is a long-winded way of saying that there is little to no significant sensible weather concerns for today, with the upper level pattern transitioning from more zonal flow to a ridging pattern through the day. Morning low clouds across the Bay Area will retreat to the immediate coast into the afternoon. High temperatures reach the lower to middle 70s across the inland valleys, up to the upper 70s in the southern Salinas Valley, with the Bays seeing highs in the upper 60s to lower 70s and the lower 60s prevailing across the Pacific Coast.
..issued at 1244 AM PST Fri Nov 7 2025 (Saturday through Thursday)
The ridge will build into the weekend, and will contribute to more general offshore flow across the region, resulting in clear skies and temperatures warmer than the seasonal average through Monday. Highs across the inland valleys reach the middle 70s to the middle 80s with the Bays seeing highs in the lower 70s to the lower 80s, and mid to upper 60s prevailing at the coast. The thermal belts will also activate with mild overnight lows in the higher elevations Saturday morning through Tuesday morning.
Monday night into Tuesday will mark the start of the ridge eroding, allowing a deep upper level low to form in the east Pacific and impact the West Coast beginning Wednesday. All model guidance generally agrees that the rain should start light in the North Bay before spreading southward with increasing coverage and intensity. There is still some uncertainty regarding the exact impacts of this system, and in particular, ensemble model cluster analysis is beginning to note a significant strand of model guidance that keeps rain chances around through Saturday the 15th. However, most model and Atmospheric River guidance continues to lean towards the beneficial side of the impacts to our region.
(18z TAFS) Issued at 1048 AM PST Fri Nov 7 2025
Overcast conditions continue in the North Bay and at HAF while other sites are clearing. Expect cloud cover to continue to erode into the afternoon leading to VFR for all but HAF, which keeps CIGs through early Saturday morning. Expect moderate winds for the afternoon that reduce into the evening. Cloud cover will be slow to rebuild overnight but CIGs look to reestablish for all but LVK and the Monterey Bay terminals into Saturday morning.
Vicinity of SFO, VFR and moderate winds arrive into the afternoon. Winds reduce in the early evening, becoming light into the night. Expect winds to become light and variable into early Saturday as IFR CIGs fill over the terminal and around the SF Bay. Cloud cover will persist into Saturday afternoon, but VFR conditions and moderate winds are expected for the rest of that day.
SFO Bridge Approach, Similar to SFO.
Monterey Bay Terminals, VFR through the TAF period. Moderate winds build into the afternoon and last into the evening before reducing. An eddy over the bay looks to keep low clouds only over the bay itself and prevent cloud cover from building over the terminals. Light winds last through the night and into Saturday afternoon.
(today through Wednesday) Issued at 917 AM PST Fri Nov 7 2025
Expect rough seas to continue across the coastal waters with moderate period WNW swell persisting. Seas will gradually ease to moderate by Saturday with more favorable conditions expected to continue into the beginning of next week. Winds stay light to moderate through the middle of the next work week but build again in the late week.
Issued at 1048 AM PST Thu Nov 7 2025
Hazardous beach conditions will persist through Saturday for all coastal beaches. Expect an increased risk of sneaker waves and rip currents as well as breaking waves up to 25 feet. Remain out of the water to avoid hazardous swimming conditions, stay off of jetties, piers, and other waterside infrastructure, and never turn your back on the ocean! The increased risk for sneaker waves and rip currents will linger Friday through early Saturday morning with westerly swell quickly rebuilding.
Ca, Beach Hazards Statement through Saturday morning for CAZ006-505- 509-529-530.
Coastal Flood Advisory until 2 PM PST Saturday for CAZ006-506- 508-529-530.
PZ, Small Craft Advisory until 3 AM PST Saturday for Pt Arena to Pt Reyes 10-60 NM-Pt Pinos to Pt Piedras Blancas 0-10 nm.
Small Craft Advisory until 3 PM PST this afternoon for Pigeon Pt to Pt Pinos 10-60 NM.
