FXUS66 KMTR 252321
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco CA
421 PM PDT Sat Jul 25 2026

...New AVIATION, MARINE...

.KEY MESSAGES...
Updated at 1254 PM PDT Sat Jul 25 2026

 - Breezy onshore winds expected each afternoon and evening 
   through early in the week

 - Temperatures near seasonal averages through the first half of 
   the week

 - Gradual warming by the end of the week with increasing 
   Moderate HeatRisk potential across the interior

&&

.SHORT TERM...
Issued at 1254 PM PDT Sat Jul 25 2026
(This evening through Sunday night)

With mostly sunny sky conditions across the region this 
afternoon, temperatures will be seasonably warm. The warmest will 
be across the interior with 80s to lower 90s and mid-to-upper 90s 
across the warmest portions of the far interior valleys. Stratus 
is once again forecast to make a return to the coast late tonight 
and into the coastal adjacent valleys by Sunday morning. However, 
a very similar weather pattern is forecast as this morning, so 
confidence is low to moderate at best. The marine layer is 
forecast to remain around 1,000 feet in depth, so we'll see how 
tonight pans out. For Sunday, expecting similar conditions as 
today. 

A long-period (20-22 second) southerly swell has arrived along 
the San Francisco Bay Area and Central Coast! Be advised, sunny 
conditions along the coast will make for an increase in visitors 
(tourist, out of state, and even locals trying to escape the 
inland heat). The Beach Hazards Statement has been extended into 
Wednesday afternoon as tropical cyclone Genevieve in the Eastern 
Pacific will also impact conditions along our coastline. For more 
on this, please see the Beaches section of the AFD below. 

&&

.LONG TERM...
Issued at 1254 PM PDT Sat Jul 25 2026
(Monday through next Friday)

Not much change in the extended forecast. Expecting near normal 
temperatures to persist into the first half of the week as high 
pressure remains over the Four Corners region and troughing 
persists off of the Pacific Northwest coast. A gradual warming 
trend, especially across the interior, is expected as the high 
pressure builds toward and over southern California late this week
into next weekend. However, onshore winds are forecast to persist
through this period allowing for cooler conditions near the 
coast. By Thursday and into next weekend, we see more widespread 
Moderate HeatRisk across the interior. 

&&

.AVIATION...
(00Z TAFS)
Issued at 420 PM PDT Sat Jul 25 2026

Currently VFR with a few thin high clouds streaming in from the 
southwest. This means stratus has a long way to go before it gets 
advected in or forms. With that and how last night went, confidence 
is only low to moderate (up to 60%) that ceilings will return 
tonight. If they do, it'll likely be in the early-to-mid morning 
hours. With a compressed marine layer, ceilings will likely be IFR 
and thus be difficult to reach interior terminals. Widespread VFR is 
expected by tomorrow afternoon. Diurnal winds will prevail.

Vicinity of SFO...Currently VFR with westerly flow. Strong westerly 
winds with gusts up to 30 knots are expected through this evening. 
Moderate (60%) confidence on a ceiling returning tonight, likely 
IFR/low-end MVFR.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...Currently VFR with westerly flow at both 
terminals. Moderate (60%) confidence on ceilings returning tonight, 
likely IFR.

&&

.MARINE...
(Tonight through next Thursday)
Issued at 420 PM PDT Sat Jul 25 2026

Fresh northwesterly breezes with gale force gusts continue into
the  weekend. Northwest winds increase to strong by Tuesday and
moderate  seas build to rough by Wednesday. The long period
southerly swell  caused by distant tropical cyclone activity in
the Eastern Pacific  continues to impact our coastal waters into
the middle of the  upcoming week.

&&

.BEACHES...
Issued at 911 AM PDT Sat Jul 25 2026

Tropical cyclones in the Eastern Pacific are generating a long-
period southwesterly swell which has reached the coastline of the 
San Francisco Bay Area and Central Coast. As such, sneaker waves and 
strong rip currents are the primary concerns. However, breaking 
waves can reach up to 10 feet along some south and southwest facing 
beaches and break points (like Santa Cruz, Pacifica, and parts of 
Stinson or Ocean Beach). Sneaker waves can have 20+ minutes in 
between the larger sets (breaking waves) with significant "flat/calm 
looking" times between them. This can potentially catch beachgoers 
by surprise and resulting in people being swept into the cold
turbulent ocean; hence the name "sneaker". 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! The Beach 
Hazards Statement has been extended through Wednesday afternoon 
for all beaches along the Pacific Coast. 

RGass

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
CA...Beach Hazards Statement through Wednesday afternoon for CAZ006-
     505-509-529-530.

PZ...Small Craft Advisory until 9 PM PDT this evening for Mry Bay.

     Small Craft Advisory from 9 AM to 9 PM PDT Sunday for Mry Bay.

     Small Craft Advisory from 9 AM to 3 PM PDT Monday for Mry Bay.

     Small Craft Advisory until 3 PM PDT Monday for Pigeon Pt to Pt 
     Pinos 0-10 nm-Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt 
     Reyes 0-10 nm.

     Small Craft Advisory from 3 PM Sunday to 3 PM PDT Monday for Pt 
     Arena to Pt Reyes 10-60 NM-Pt Reyes to Pigeon Pt 0-10 nm.

     Gale Warning until 3 AM PDT Monday for Pt Pinos to Pt Piedras 
     Blancas 0-10 nm.

&&

$$

SHORT TERM...RGass
LONG TERM....RGass
AVIATION...Sarment
MARINE...Navarrete

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Prepared by Boulder-Creek.com Weather at: Sat Jul 25 20:30:03 PDT 2026