FXUS66 KMTR 261930
AFDMTR
Area Forecast Discussion
National Weather Service San Francisco CA
1230 PM PDT Fri Jun 26 2026
...New SHORT TERM, LONG TERM...
.KEY MESSAGES...
Updated at 1220 PM PDT Fri Jun 26 2026
- Gusty onshore winds through Saturday with east-west mountain
passes as high as 50+ mph. Winds increase for the waters this
weekend, with marine impacts through early next week
- An upper trough brings cooler temperatures, moisture, and a
deeper marine layer with AM drizzle Saturday
- Beach hazards return Saturday morning through Wednesday morning
for south and southwest facing beaches along the Pacific Coast
&&
.SHORT TERM...
Issued at 1220 PM PDT Fri Jun 26 2026
(This evening through Saturday night)
Radar shows ongoing light rain showers across the far interior areas
as a cold front moves down, associated with the larger upper level
low propagating across the PacNW. With troughing firmly in place, a
deeper marine layer allowed for some coastal drizzle this morning
for a few spots, now currently mixing out. High clouds associated
with this system continue to move into the region, helping to
keep interior areas a bit cooler today. Along with these clouds, cooler
850 mb temps will usher in 10-15 degree below normal surface
temperatures for both this afternoon and Saturday. As the low
moves slightly southward today and tomorrow, a tighter gradient
will allow for a significant uptick in onshore winds both days,
with gusts 50+ mph through west-east passes and mountain
peaks...20-40 mph wind gusts elsewhere. With better moisture in
the lower levels, the marine layer on Saturday will remain
sufficiently deep, and another round of drizzle/light rain
(<0.05") is expected in the morning.
Winds will increase not only across inland areas, but also over the
waters. Gusts up to 30-40 kt will be possible with seas of 8 to 10
ft. Marine hazards are currently in effect through Sunday morning,
please see the marine discussion for further information.
An uptick in long period southerly swell will result in a high risk
of rip currents and sneaker waves. Never turn your back to the
ocean! Beach hazards will be in effect this weekend and into
much of next week, see the beaches discussion for more
information.
&&
.LONG TERM...
Issued at 1220 PM PDT Fri Jun 26 2026
(Sunday through next Thursday)
The aforementioned low will move up to Idaho/Montana beginning
Sunday, but weak troughing will remain in place over California
through at least the middle of next week as high pressure attempts
to push in from the west. A very slow increase in heights will
support the marine layer becoming more compressed each day, but
could still make it relatively far inland with patchy fog for the
coastal terrain through at least Tuesday. Temperatures will follow
suit, slowly warming into the middle of the week, but generally
should remain at or below normal through the forecast period. Model
guidance has finally started to catch on to this cooler influence
from the trough, but forecasted temperatures near the end of the
period may still be a bit too high depending on how long it takes
for the ridge to push in.
&&
.AVIATION...
(18Z TAFS)
Issued at 1156 AM PDT Fri Jun 26 2026
Lower clouds are scattering and eroding for all but the immediate
coast, while mid and high clouds continue to move through the area.
Winds increase across the region build into the afternoon becoming
breezy to gusty with mostly westerly wind directions. Winds reduce
into the evening as IFR/MVFR CIGs move inland. Pockets of mist and
drizzle look to affect visibilities along the coast and some
slightly more inland areas. Breezier winds arrive into Saturday
morning, scattering cloud cover from the north to the south. The
North Bay looks to clear in the early morning, the SF Bay in the mid
morning and the Monterey Day beyond the end of the TAF period. Gusty
winds will build into that day as cloud cover erodes across the
region.
Vicinity of SFO...MVFR CIGs last into the afternoon but scatter as
breezy and gusty west winds arrive. Winds reduce into the evening
MVFR CIGs return. Mist and drizzle look to affect the terminal in the
late night, offering slight reductions in visibilities. Cloud cover
lifts and scatters into the mid morning as breezy west winds arrive.
Strong gusts build into that afternoon, peaking around 33 kts.
SFO Bridge Approach...Similar to SFO.
Monterey Bay Terminals...Cloud cover is clearing leading to VFR as
breezy west winds arrive. Winds will reduce into the evening with
MVFR CIGs building overland. CIGs fall to IFR overnight with some
drizzle and mist affecting visibilities.
&&
.MARINE...
(Today through Wednesday)
Issued at 1156 AM PDT Fri Jun 26 2026
Winds have reduced in the outer waters, but continue to be breezy
to gusty along the immediate coast. Winds across the waters will
reduce through the day but begin to strengthen again Saturday
afternoon. These strong winds and rough seas will result in
hazardous conditions for small craft across the waters at times
well into the work week. Expect gale force gusts to develop in the
northern outer waters and along coastal jet regions over the
weekend as well. Long period southwest swell will persist through
the extended forecast.
&&
.BEACHES...
Issued at 110 AM PDT Fri Jun 26 2026
A Beach Hazards Statement has been issued for the Pacific Coast
Beaches from Saturday morning through Wednesday morning as long
period southerly swell returns to the coast, creating an increased
risk of sneaker waves and strong rip currents, especially for
south and southwest facing beaches. Hazardous beach conditions are
advertised, specifically for moderate to steeply sloped beaches
along the Pacific Coast of the North Bay, San Mateo, Santa Cruz
counties. Sneaker waves will run up the beach much farther than
other waves, potentially catching beachgoers by surprise and
resulting in people being swept into the water. Rip currents are
strong enough to pull the strongest swimmers away from shore. Swim
near a lifeguard if possible. Stay back from the beach, and away
from jetties, piers, beachside rocks, and other infrastructure
near the water. Never turn your back to the ocean!
&&
.MTR WATCHES/WARNINGS/ADVISORIES...
CA...Beach Hazards Statement from late tonight through late Tuesday
night for CAZ006-505-509-529-530.
PZ...Small Craft Advisory until 3 AM PDT Sunday for SF Bay N of Bay
Bridge.
Small Craft Advisory until 3 AM PDT Saturday for Mry Bay.
Small Craft Advisory from 9 AM Saturday to 3 AM PDT Sunday for
Mry Bay-Pigeon Pt to Pt Pinos 0-10 nm-Pt Reyes to Pigeon Pt
0-10 nm.
Small Craft Advisory until 3 PM PDT Saturday for Pt Arena to Pt
Reyes 0-10 nm-Pt Pinos to Pt Piedras Blancas 0-10 nm.
Gale Warning from 3 PM Saturday to 3 AM PDT Sunday for Pt Arena
to Pt Reyes 0-10 nm-Pt Arena to Pt Reyes 10-60 NM-Pt Pinos
to Pt Piedras Blancas 0-10 nm.
Small Craft Advisory until 9 PM PDT this evening for Pt Reyes to
Pigeon Pt 0-10 nm.
Small Craft Advisory from 9 AM to 3 PM PDT Saturday for Pt Arena
to Pt Reyes 10-60 NM.
Small Craft Advisory from 3 PM Saturday to 3 AM PDT Sunday for
Pigeon Pt to Pt Pinos 10-60 NM.
&&
$$
SHORT TERM...Zuber
LONG TERM....Zuber
AVIATION...Murdock
MARINE...Murdock
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Prepared by Boulder-Creek.com Weather at: Fri Jun 26 14:30:03 PDT 2026
From the National Weather Service
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