FXUS66 KMTR 301047
AFDMTR
Area Forecast Discussion
National Weather Service San Francisco CA
347 AM PDT Tue Jun 30 2026
...New AVIATION, MARINE...
.KEY MESSAGES...
Updated at 1200 PM PDT Sun Jun 28 2026
- Seasonally cool temperatures along with breezy afternoon winds
persist into the middle of the week
- Increased risk of sneaker waves and strong rip currents through
Wednesday morning along the Pacific coast
- Gradual warming trend begins late week and into next week
&&
.SHORT TERM...
Issued at 1200 AM PDT Tue Jun 30 2026
(Tonight through Wednesday)
Troughing continues to dominate the upper level pattern across
the western U.S. and will continue through the middle to end of
the work week. GOES satellite imagery shows the marine stratus
continuing to push inland into coastal communities from Point
Reyes southward as of 1200 AM PDT. Marine stratus will continue to
fill into the area overnight clearing late this morning. Today,
high temperatures will be generally within a few degrees of normal
with coastal areas forecast to be in the upper 50s to low 60s,
warmer for the inland communities in the mid 70s to upper 80s with
some areas seeing into the lower 90s.
Long-period southerly swell will continue to increase the risk for
sneaker waves and strong rip currents along the Pacific coast,
particularly at south and southwest facing beaches. A Beach Hazards
Statement remains in effect through Wednesday morning, see the
BEACHES section for more details. Never turn your back to the ocean!
&&
.LONG TERM...
Issued at 1200 AM PDT Tue Jun 30 2026
(Wednesday night through next Monday)
The aforementioned troughing will begin to flatten towards the end
of the work week as ridging begins to develop in the south-central
U.S., and zonal flow sets in. As the ridging builds into the
weekend, high temperatures will rise across the area, but only to
Minor HeatRisk levels. There is still a degree of uncertainty the
center for the building high pressure and how strong the ridging
will be. The Climate Prediction Center guidance shows an increased
likelihood of above normal temperatures in the 8 to 14 day
outlook.
&&
.AVIATION...
(12Z TAFS)
Issued at 347 AM PDT Tue Jun 30 2026
Stratus /MVFR-IFR/ continues to develop with onshore winds ushering
stratus inland. Diurnal surface warming will mix stratus out by late
morning to early afternoon otherwise VFR prevails today. Coastal
stratus redevelops tonight and Wednesday morning.
Vicinity of SFO...Stratus /MVFR-VFR/ mixing out to VFR by 16z today.
Stratus /MVFR/ redevelops tonight and Wednesday morning. West wind
near 10 knots increasing to 15 to 25 knots in the afternoon and
evening. West wind decreasing to 10 knots tonight and Wednesday
morning.
SFO Bridge Approach...Similar to SFO.
Vicinity of SJC and OAK...San Jose Airport VFR, light southeast
wind becoming northwest 13 knots in the afternoon. Wind decreasing
to near 10 knots then becoming light southeast late tonight and
Wednesday morning. Oakland Airport stratus /MVFR/ mixing out to
VFR by late morning. Stratus /MVFR/ returns tonight and Wednesday
morning. Northwest wind near 10 knots becoming west 15 to 20 knots
late morning and afternoon, decreasing to 5 to 10 knots tonight and
Wednesday morning.
Monterey Bay Terminals...Stratus /IFR/ mixes out to VFR by late
morning and afternoon. Stratus /MVFR-IFR/ redevelops and moves
inland tonight and Wednesday morning. West winds 5 to 15 knots
with afternoon gusts to 20 knots.
&&
.MARINE...
(Today through Sunday)
Issued at 334 AM PDT Tue Jun 30 2026
Strong northerly breezes will continue through Friday for the
outer waters and the coastal jet region of Point Reyes. This will
create hazardous conditions for small craft. Frequent gale force
gusts are expected across the northern outer waters and along the
Point Reyes coastal jet region through Wednesday, a bit weaker
Thursday and Friday. Moderate northerly breezes will prevail
elsewhere. Rough to very rough seas will continue through
Wednesday before abating to become moderate to rough Thursday into
Friday.
&&
.BEACHES...
Issued at 236 PM PDT Mon Jun 29 2026
A Beach Hazards Statement remains in effect for Pacific Coast
beaches through 5 AM Wednesday. Long period southerly swell will
create an increased risk of sneaker waves and strong rip currents.
This will be especially true for south and southwest facing beaches
with moderate to steep slopes along the North Bay, San Francisco
Peninsula, and Santa Cruz coasts. Sneaker waves can sweep across the
shoreline without warning, pulling people into the sea from rocks,
jetties and beaches. Dangerous swimming and surfing conditions and
localized beach erosion can be expected. Stay off of jetties, piers,
rocks, and other waterside infrastructure. Remain out of the water
to avoid hazardous surf and NEVER turn your back on the ocean.
Monitor local weather, surf and tide forecasts at
www.weather.gov/mtr.
&&
.MTR WATCHES/WARNINGS/ADVISORIES...
CA...Beach Hazards Statement through late tonight for CAZ006-505-509-
529-530.
PZ...Gale Warning until 9 PM PDT this evening for Pt Arena to Pt
Reyes 0-10 nm.
Gale Warning until 3 PM PDT Wednesday for Pt Arena to Pt Reyes
10-60 NM.
Small Craft Advisory until 3 PM PDT Wednesday for Pigeon Pt to
Pt Pinos 10-60 NM.
&&
$$
SHORT TERM...Malarkey
LONG TERM....Malarkey
AVIATION...Canepa
MARINE...Canepa
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Prepared by Boulder-Creek.com Weather at: Tue Jun 30 04:30:03 PDT 2026
From the National Weather Service
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