FXUS66 KMTR 261542
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco CA
742 AM PST Wed Nov 26 2025

...New UPDATE, MARINE...

.KEY MESSAGES...
Updated at 741 AM PST Wed Nov 26 2025

 - Dry and mild conditions continue through Thursday 

 - Cooler temperatures Friday and into the weekend as the next 
   system approaches

&&

.UPDATE...
Issued at 741 AM PST Wed Nov 26 2025

Visibilities have improved across the North Bay and East Bay this 
morning. Thus, the Dense Fog Advisory has been cancelled. With less 
cloud cover anticipated today, temperatures will warm into the lower 
70s across the Central Coast and Santa Cruz Area, approach 70 
degrees F in the North Bay, and 60s across much of the remainder of 
the region as moderate, dry offshore flow persist in the higher 
elevations. Otherwise, the forecast remain on track for the rest of 
the day.  

RGass

&&

.SHORT TERM...
Issued at 319 AM PST Wed Nov 26 2025
(Today and tonight)

A Dense Fog Advisory remains in effect until 11AM this morning for 
the North Bay and Easy Bay Interior Valleys. An upper level ridge 
axis will pivot W to E across the West Coast today. Locations with 
fog this morning will eventually join the remainder of our service 
area with mostly sunny skies, light winds and above normal 
temperatures (5-10 degrees for the interior). A meandering surface 
high over our coastal waters continues to pull weak flow offshore 
from the Bay Area south into the Central Coast, seen well in low 
level boundary layer wind fields. Fog is expected to develop once 
again later tonight, mainly across the North Bay and portions of the 
East Bay, however coverage should be less than what we've seen the 
past couple of nights.

&&

.LONG TERM...
Issued at 319 AM PST Wed Nov 26 2025
(Thursday through Tuesday)

Thursday will bring slightly warmer temperatures than today, and 
will make for a banner Thanksgiving Day under sunny skies with light 
winds and pleasantly mild temperatures. A progressive, upper level 
disturbance well to our north takes aim at the Pacific Northwest 
Thursday night into Friday. The progressive shortwave trough will 
bring some precip to the Intermountain West, with its biggest 
influence on our area, a relatively weak and dry cold front that 
will bring noticeably cooler temps for Friday and the weekend. 
There's better consensus in deterministic guidance to help 
compliment the ensemble guidance, suggesting cooler temperatures for 
the 'inside slider' type pattern we may see Sunday into the 
beginning of next week. The most potent portion of the trough attm 
looks to be too far east to bring the elevated winds winds and other 
impacts we typically see in that type of pattern.

&&

.AVIATION...
(12Z TAFS)
Issued at 319 AM PST Wed Nov 26 2025

LIFR-VLIFR conditions have developed across the North and East Bay 
valleys, although high cloud cover has made it difficult to 
determine the spatial extent of the stratus layer. Gusty offshore 
winds have mixed out the stratus layer at APC, and have returned to 
terminal to a VFR forecast as a result with a TEMPO for fog should 
the winds diminish. For the rest of the region, there is low to 
moderate confidence of stratus development for the rest of the 
morning with the highest potential at OAK, SJC, and SNS. Light 
offshore winds will prevail tonight, with the speeds picking up and 
the winds getting a more northerly component in the afternoon, 
before turning light again with chances for fog in the North and 
East Bay valleys tonight.

Vicinity of SFO...IFR-LIFR ceilings continue through the morning 
hours, dissipating in the late morning around 17-18Z. Light easterly 
winds turn to a moderate northerly flow in the afternoon and 
evening, before winds turn light again overnight.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...Moderate to high confidence for VFR 
through the TAF period. Monitoring developing stratus at the very 
southern tip of the Salinas Valley for potential impacts to SNS down 
the line, but not expecting anything imminent and the impact time 
has been pushed back from the previous forecast. Light to gentle 
drainage winds will turn moderately onshore in the afternoon and 
evening before resuming tonight. 

&&

.MARINE...
(Today through Monday)
Issued at 741 AM PST Wed Nov 26 2025

Gentle to moderate northerly flow will persist over the coastal
waters today. Patchy dense fog will be possible again tonight,
especially in the bays. Seas will continue to subside through
Wednesday. Winds will begin to increase again late week, building
moderate to rough seas.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...Small Craft Advisory from 3 PM Thursday to 9 AM PST Friday for 
     Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 10-60 
     NM.

&&

$$

SHORT TERM...JM
LONG TERM....JM
AVIATION...DialH
MARINE...MM

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Prepared by Boulder-Creek.com Weather at: Wed Nov 26 08:30:02 PST 2025