FXUS66 KMTR 011206
AFDMTR
Area Forecast Discussion
National Weather Service San Francisco CA
406 AM PST Sun Feb 1 2026
...New AVIATION, MARINE...
.KEY MESSAGES...
Updated at 158 AM PST Sun Feb 1 2026
- Above normal temperatures and dry conditions through the week
- Minor coastal flooding today during high astronomical tide for
bayshore locations along the San Francisco Bay, San Pablo Bay,
and Monterey Bay
- Hazardous beach conditions through Monday at Pacific Coast
beaches
&&
.SHORT TERM...
Issued at 158 AM PST Sun Feb 1 2026
(Today and tonight)
Fog has been observed overnight in the North Bay and East Bay
Interior Valleys. High clouds streaming in from a dying cold front
are adding complexity to the fog forecast both in terms of viewing
it from space via satellite as well as seemingly not letting it get
widespread like initially thought. Still, if you are driving this
morning, slow down, use your low-beam headlights, and leave plenty
of distance ahead of you. The aforementioned cold front will be the
main feature today. Rain can be seen to the north on our neighbor
Eureka's radar, but this is not expected to hold together down here.
Instead, what we can expect is a pause in the warming trend, a
return of onshore flow, and an extra colorful sunrise/sunset from
the cloud shield. One more round of minor coastal flooding is
expected during high astronomical tide this morning for bayshore
locations along the San Francisco Bay, San Pablo Bay, and Monterey
Bay. Hazardous beach conditions continue at Pacific Coast beaches,
read more in the BEACHES section.
&&
.LONG TERM...
Issued at 158 AM PST Sun Feb 1 2026
(Monday through Saturday)
A warming trend commences Monday and peaks Wednesday as longwave
upper-level ridging builds into place and sets up its axis over the
region. Sensible weather wise, this will result in temperatures of
10 degrees above normal. Global ensemble clusters are in agreement
that the aforementioned ridge will begin to get shoved east on
Thursday by upper-level shortwave troughing that will skirt the
region Friday into Saturday. This will relatively cool temperatures
with no rain in the official forecast.
&&
.AVIATION...
(12Z TAFS)
Issued at 345 AM PST Sun Feb 1 2026
Patchy fog will continue in the North and East Bay valleys this
morning, improving by early afternoon. Moderate confidence in
IFR/MVFR stratus developing with locally reduced visibilities
this morning around San Francisco Bay. Light winds this morning,
becoming generally onshore 5-10 kts this afternoon. Areas of
stratus and fog may redevelop late tonight as skies aloft become
mostly clear.
Vicinity of SFO...Moderate confidence in tempo IFR ceilings this
morning. Winds becoming northwest around 10 kts this afternoon.
Low confidence in stratus returning late tonight into Monday
morning.
SFO Bridge Approach...Similar to SFO.
Monterey Bay Terminals...VFR expected today. Light SE winds this
morning, becoming onshore 5-10 kts this afternoon. Low potential
for stratus/fog to develop late tonight/Monday morning with a
light offshore breeze expected.
&&
.MARINE...
(Today through Friday)
Issued at 345 AM PST Sun Feb 1 2026
Hazardous marine conditions return late this morning and persist
through Monday, with seas building to become rough across the
outer waters and northerly breezes increasing to become fresh to
strong. Conditions improve Tuesday with moderate seas and a gentle
northerly breeze prevailing through Thursday.
&&
.BEACHES...
Issued at 333 AM PST Fri Jan 30 2026
Hazardous beach conditions will continue through Monday at all
Pacific Coast beaches. Long period westerly swell will bring an
increased risk for sneaker waves and strong rip currents with
breaking waves of 14 to 19 feet. Remember: stay off of jetties,
piers, rocks, and other waterside infrastructure, remain out of
the water, and never turn your back on the ocean!
&&
.MTR WATCHES/WARNINGS/ADVISORIES...
CA...Beach Hazards Statement through Monday morning for CAZ006-505-
509-529-530.
Coastal Flood Advisory until noon PST today for CAZ006-506-508-
529-530.
PZ...Small Craft Advisory from 3 PM this afternoon to 3 PM PST Monday
for Pt Arena to Pt Reyes 0-10 nm.
Small Craft Advisory from 9 PM this evening to 3 PM PST Monday
for Pigeon Pt to Pt Pinos 0-10 nm-Pt Pinos to Pt Piedras
Blancas 0-10 nm.
Small Craft Advisory from 9 AM this morning to 3 PM PST this
afternoon for Pt Pinos to Pt Piedras Blancas 0-10 nm.
Small Craft Advisory from 9 AM this morning to 9 PM PST Monday
for Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 10-
60 NM.
&&
$$
SHORT TERM...Sarment
LONG TERM....Sarment
AVIATION...Tangen
MARINE...Tangen
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Prepared by Boulder-Creek.com Weather at: Sun Feb 1 08:30:03 PST 2026
From the National Weather Service
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