FXUS66 KMTR 152355
AFDMTR
Area Forecast Discussion
National Weather Service San Francisco CA
455 PM PDT Wed Oct 15 2025
...New AVIATION, MARINE...
.KEY MESSAGES...
Updated at 1244 PM PDT Wed Oct 15 2025
- Warming and drying trend through Saturday
- Long period northwesterly swell will bring an increased risk
of sneaker waves and rip currents to Pacific Coast beaches by
Saturday
- Cooler conditions return Sunday
&&
.SHORT TERM...
Issued at 1244 PM PDT Wed Oct 15 2025
(This evening through Thursday)
Another cool day is expected across the region with lingering cloud
cover. Temperatures will likely warm into the upper 50s to lower 60s
across much of the region with isolated pockets nearing 70 degrees F.
The mid/upper level low is now located over Nevada and will continue
a east-northeastward track over the next 24 hours or so. In wake of
the exiting trough, high pressure will nose in from the eastern
Pacific. This will result in a gradual warming trend the next few
days and weak offshore winds, mainly in the higher elevations
beginning tonight.
With offshore winds aloft, only expecting FEW/SCT clouds tonight and
may become BKN by late evening in areas that typically see overnight
stratus. Temperatures Wednesday night into Thursday look to bottom
out in the 40s across the interior and lower 50s around the San
Francisco Bayshore and coastal areas. The highest peaks across the
region very well may drop into the upper 30s, especially across the
Central Coast where the offshore winds are expected to be weaker.
Temperatures on Thursday look to warm into the the upper 60s near
the coast to lower 70s inland with mostly sunny skies by the
afternoon. Again, these temperatures will be about 5 to 10 degrees
below average.
&&
.LONG TERM...
Issued at 1244 PM PDT Wed Oct 15 2025
(Thursday night through next Tuesday)
The warming and drying trend will continue through Friday as
temperatures rebound to near seasonal averages as weak offshore flow
persists. By Saturday, forecast to be the warmest day of the week,
we are expecting temperatures to be about 5 to 10 degrees above
normal.
By Sunday, what appears to be a dry frontal boundary will move
across the region cooling temperatures slightly. Rain chances have
been removed from the forecast as the a mid/upper level low drops
out of the Gulf of Alaska and moves inland over the Pacific
Northwest on Monday. Zonal flow is forecast across the Bay Area and
Central Coast through the remainder of next week.
&&
.AVIATION...
(00Z TAFS)
Issued at 455 PM PDT Wed Oct 15 2025
It's VFR-MVFR with low clouds covering a fair amount of the forecast
area this afternoon. Clouds will diminish post sunset with the loss
of surface diurnal heating, with night-time cooling leading to patchy
fog and low clouds /LIFR-IFR/ tonight and Thursday morning.
Vicinity of SFO...VFR-MVFR. Light/variable wind to west wind 5 knots
tonight and Thursday morning becoming west to northwest near 10 knots
Thursday afternoon and early evening.
SFO Bridge Approach...Similar to SFO.
Monterey Bay Terminals...VFR. Light/variable winds to onshore
winds near 5 knots, mainly light southeast wind tonight and
Thursday morning. Onshore winds near 10 knots redeveloping
Thursday afternoon.
&&
.MARINE...
(Tonight through next Monday)
Issued at 441 PM PDT Wed Oct 15 2025
Light to gentle breeze persists across the waters today, building
to a moderate to fresh breeze through the end of this week. A
longer period northwesterly swell arrives this weekend 7 to 10
feet at 15 seconds.
&&
.MTR WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...None.
&&
$$
SHORT TERM...RGass
LONG TERM....RGass
AVIATION...Canepa
MARINE...Behringer
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Prepared by Boulder-Creek.com Weather at: Wed Oct 15 20:30:02 PDT 2025
From the National Weather Service
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