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 06:30:03 PST 2026
From the National Weather Service
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