FXUS66 KMTR 261259
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco CA
459 AM PST Thu Feb 26 2026

...New UPDATE...

.KEY MESSAGES...
Updated at 1252 AM PST Thu Feb 26 2026

 - Dense fog in the coastal and valley locations this morning

 - Warmer and drier conditions for the next few days

 - Cooler conditions this upcoming weekend

&&

.UPDATE...
Issued at 457 AM PST Thu Feb 26 2026

Quick update on the fog: a Dense Fog Advisory was issued for the
Salinas Valley due to observations of dense fog at Salinas and
King City. This Dense Fog Advisory is out through 11 AM this 
morning. We have also seen dense fog observed at Oakland and 
Livermore. We are monitoring nearby observations and will issue 
additional Dense Fog Advisories if additional observations of fog 
start to come in.

DialH

&&

.SHORT TERM...
Issued at 1252 AM PST Thu Feb 26 2026
(Today and tonight)

Mid- to high level cloud cover streams over the Bay Area and Central 
Coast, below which low stratus and fog is developing in the wake of 
the widespread light rainfall from the last couple of days. A Dense 
Fog Advisory has been issued for the North Bay interior valleys now 
through 11 AM due to reported visibilities below a quarter of a mile 
in the Sonoma and Napa County valleys. Will monitor observations 
closely during the night, with the possibility that the Dense Fog 
Advisory will need to be extended depending on how the stratus layer 
evolves overnight. The stratus is expected to clear late in the 
morning, although the high clouds will stick around to an extent, 
with the rest of the day rather warm for this time of year, with 
high temperatures ranging from the lower to middle 60s in the Bay 
Area Pacific Coast, to the upper 60s to lower 70s in the SF 
Bayshore, the Bay Area interior valleys, and the Monterey Bay 
region, and up to the middle to upper 70s in the southern Salinas 
Valley. Light winds overnight will build into a gentle onshore 
breeze this afternoon.

&&

.LONG TERM...
Issued at 1252 AM PST Thu Feb 26 2026
(Friday through Wednesday)

Dry and warm conditions continue through the next few days with the 
warmest conditions expected on Friday, when highs range from the 
middle to upper 60s in the Bay Area Pacific coast to the middle to 
upper 70s in the interior valleys, even reaching the lower 80s in 
the interior Salinas Valley, Carmel Valley and possibly other warm 
spots in the Central Coast as well. A slight cooling will begin on 
Saturday as a cut-off low approaches, but temperatures are expected 
to remain above seasonal averages. 

The approach of a cut off low on Sunday and Monday will interrupt 
this warming trend, with the low center expected to pass to the 
north near Cape Mendocino and the northern tier of the state. Light 
showers remain possible, but meaningful rain still remains elusive. 
The NBM continues to limit probabilities of 0.25" rainfall totals 
along the coastal ranges to around 10-20% for 24-hour periods ending 
on Monday 4 PM, and the 95th percentile rainfall total (where there 
is only a 5% chance of getting more than the stated amount) for the 
same period has dropped to below half an inch across the coastal 
ranges. 

By Tuesday next week, shortwave ridging should bring a gentle 
warming and drying trend back. At and just beyond the end of the 7-
day outlook, ensemble model cluster analysis shows the possibility 
of a weak trough coming through the West Coast, but the impacts are 
still uncertain. However, said cluster analysis suggests that as 
with the cut-off low this upcoming Sunday, major impacts are 
unlikely.

&&

.AVIATION...
(12Z TAFS)
Issued at 328 AM PST Thu Feb 26 2026

Currently a mixed bag of LIFR-VFR at the terminals. Patchy dense fog 
has been observed in the North Bay, San Francisco Peninsula Coast, 
and Central Coast. Moderate confidence that it won't impact other 
locations. Light and diurnal winds will prevail. Warmer and drier 
conditions today will help limit fog/stratus potential tonight.

Vicinity of SFO...Currently VFR and calm at the terminal. Moderate 
confidence that VFR will prevail through the TAF period. Winds will 
be light and diurnal.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...Currently VFR and calm at MRY and LIFR and 
calm at SNS. Even if dense fog doesn't spread into MRY, there is 
dense fog within the region. VFR will prevail by this afternoon. 
Light and diurnal winds will prevail.

&&

.MARINE...
(Today through Tuesday)
Issued at 328 AM PST Thu Feb 26 2026

Moderate northerly breezes and moderate seas will prevail. Dry
conditions are expected through tomorrow with light drizzle/rain
showers possible this weekend, especially for the northernmost
waters.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
CA...Dense Fog Advisory until 11 AM PST this morning for CAZ506-516-
     528.

PZ...None.
&&

$$

SHORT TERM...DialH
LONG TERM....DialH
AVIATION...Sarment
MARINE...Sarment

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Prepared by Boulder-Creek.com Weather at: Thu Feb 26 08:30:04 PST 2026