A storm system will shift across the southwest U.S. through Thursday with widespread showers and isolated thunderstorms. Isolated flooding is possible. High-elevation snow is also expected in parts of Nevada and the southern Sierra Nevada range. East of this storm, above average temperatures will challenge or break daily record high temperatures this week in the southern Plains and southeast U.S. Read More >
| ZOA CWSU Discussion | KSFO TAF TDA | |
| AWAITING CWSU INPUT | TAF TDA KSFO/KSQL METAR METARArea PIREPs PIREP |
|
| Satellite | Webcams, Ceiling≤030 Prob | |
|
Webcams
|
||
| SIERRA 03 Hour Forecast | SIERRA 12 Hour Forecast | SIGMETs |
| TANGO 03 Hour Forecast | TANGO 12 Hour Forecast | |
| ZULU 03 Hour Forecast | ZULU 12 Hour Forecast | |
| Area Forecast Discussion | Forecast Maps |
|
885 FXUS66 KMTR 181854 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 1054 AM PST Tue Nov 18 2025 ...New AVIATION... .KEY MESSAGES... Updated at 1242 PM PST Mon Nov 17 2025 - Scattered showers will gradually decrease through Tuesday morning before drier weather returns Tuesday afternoon. - Next system brings more beneficial type rain late Wednesday through Thursday. && .UPDATE... Issued at 1027 AM PST Tue Nov 18 2025 The upper level low is currently just off the coast of southern CA. Skies should remain a mix of sun and clouds today with high temperatures in the mid 40s to upper 50s for elevated areas, and the upper 50s to low 60s elsewhere. && .SHORT TERM... Issued at 312 AM PST Tue Nov 18 2025 (Today and tonight) Near term weather continues to be driven by the slow moving upper level low pressure currently parked over the Central Coast. Enough lingering moisture and lift are present around the upper low to generate widely scattered showers. Interesting to watch KMUX radar imagery early Tuesday morning with shower activity pivoting counter-clockwise around the upper low with the heaviest shower activity over the coastal waters. Freezing level is hovering right around 5k so cannot rule out some wet snow flakes over the higher peaks of the Central Coast this morning. Latest CAMS keep these scattered showers through mid-morning, but primarily out of the Bay Area and mainly over the Central Coast. By this afternoon, overall drying will occur with fair weather CU behind the departing upper level. Despite some drying and sunshine, today will be seasonably cool with highs in the 50s to near 60 (40s higher peaks). Subsidence behind the departing low pressure system and shortwave ridge overhead will lead to some clearing Tuesday night into early Wednesday. Given the recent rain and ample low level moisture some interior valley fog will be possible tonight. && .LONG TERM... Issued at 415 AM PST Tue Nov 18 2025 (Wednesday through Monday) Dry weather holds through most of Wednesday, but temperatures remain on the cool side again. Cold air and daytime heating will likely lead to fair weather CU again. The dry weather quickly comes to an end Wednesday thanks to an active longwave pattern over the EPac. Another robust upper level jet becomes amplified over the EPac Wednesday leading to another round of cyclongensis off the West Coast. A surface low is forecast to develop in the Gulf of AK Wednesday and then deepen as it track east. The low will ultimately drag a cold front through NorCal Thursday. Additionally, the amplified upper level jet will help to cut-off another upper low off the CA Thursday into Friday. The passing front and developing upper low will bring precip back to the region. Rain is still on track to return to the N Bay Wednesday night and then progress S and E early Thursday. Showers will linger through Thursday night. While this front has some moisture, the main tap isn`t overly robust despite it`s origin back to near HI. PWATs are just shy of one inch. All that being said, guidance has been trending slightly drier with total rainfall Wednesday through early Friday. Still looking more beneficial than hazardous to the region. Rainfall amounts will generally be a tenth or two and up to three quarters of an inch N Bay and coastal mountains. If the upper low over produces, the end higher end of precip amounts (1 in 10 chc) would double those rainfall amounts. One low confidence portion is the exact timing of the front and its potential impact to the Thursday morning commute. Warming and drier conditions are expected to develop Friday and over the weekend. Given another burst of rain, night and morning fog will likely be the bigger weather impacts this weekend. && .AVIATION... (18Z TAFS) Issued at 1054 AM PST Tue Nov 18 2025 Expect widespread VFR into the afternoon as cloud cover erodes across the area. Expect light to moderate winds through the evening before winds reduce into the night. Wind directions look to be driven by local effects through the day, and winds will be more variable into the night as they weaken. As a weak low pressure center moves through the area, causing some southerly to easterly winds overnight and into Wednesday morning with some spotty lower CIGs. Slight chances for light rain will also more through the area into the late morning, but these rains do not look impactful. Vicinity of SFO...Skies are clearing with easterly winds looking to turn westerly in the mid afternoon. These winds will weaken into the night and turn southwesterly as scattered mid-clouds return. Expect MVFR-level CIGs to return into early Wednesday as winds turn more southerly, but these CIGs rise into that afternoon as light showers move through the area and winds become southwesterly again. SFO Bridge Approach...Similar to SFO. Monterey Bay Terminals...Scattered mid-level clouds linger through the day. Light winds turn more moderate and westerly in the mid afternoon and last into the night before becoming light and variable. SNS looks to be affected by moderate drainage winds from the southeast into early Wednesday. && .MARINE... (Today through Sunday) Issued at 1027 AM PST Tue Nov 18 2025 Light showers exit into the afternoon. Expect wave heights remain elevated and winds remain fresh to strong with near gale force gusts possible across the northern waters through late Tuesday. Marine conditions briefly improve Wednesday as wave heights abate and winds diminish. A weak system will arrive late Wednesday into Thursday bringing a return of light rain and hazardous marine conditions. Locally fresh to moderate winds and significant wave heights between 10 to 15 feet are expected Thursday into the weekend. && .MTR WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...Small Craft Advisory until 9 PM PST this evening for Pt Arena to Pt Reyes 0-10 nm. Small Craft Advisory until 3 AM PST Wednesday for Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 10-60 NM. && $$ SHORT TERM...MM LONG TERM....MM AVIATION...Murdock MARINE...Murdock Visit us at www.weather.gov/sanfrancisco Follow us on Facebook, X, and YouTube at: www.facebook.com/nwsbayarea x.com/nwsbayarea www.youtube.com/nwsbayarea |
|
| Yesterday | ⇛Visible ⇛Nighttime ⇛GeoColor+GLM | Today | |
| 24-Hour Temp Change | 24-Hour RH Change | ||
⇛Visible ⇛Nighttime ⇛GeoColor+GLM
 |
|
Additional Links
National Airspace System Status
Other Webcams:
Alert California San Bruno Mountain
Alert California Sutro Tower 2
Alert California Coll of San Mateo Bldg36
Follow us on X
ZOA RSS Feed