FXUS66 KMTR 010043
AFDMTR
Area Forecast Discussion
National Weather Service San Francisco CA
543 PM PDT Wed Apr 30 2025
...New AVIATION, MARINE...
.SYNOPSIS...
Issued at 226 PM PDT Wed Apr 30 2025
Another fair weather day across the board today. Quiet conditions
remain until the weekend where we can expect dreary conditions
along with gusty winds Saturday and Sunday.
&&
.SHORT TERM...
(This evening through Thursday)
Issued at 226 PM PDT Wed Apr 30 2025
Nothing really doing with the showers in today's forecast over
the North Bay and Gabilan Range. We are seeing some diurnal
cumulus develop over the terrain, but as noted yesterday, much of
the instability has not been realized. Still can't rule out a
brief shower or two in those areas, but thunder potential is very
slim. Otherwise mostly clear day today aside from some areas along
the immediate coast where ample moisture has allowed cloud cover
to prevail within the marine layer.
&&
.LONG TERM...
(Thursday night through next Tuesday)
Issued at 226 PM PDT Wed Apr 30 2025
Still fairly quiet between Thursday and Friday, so shifting focus
to the weekend. A deep upper low is still on track dig into the
NEPac by the weekend and move into SoCal through the weekend.
Increased cloudiness Friday afternoon can be expected, along with
increasing winds Friday night. Winds increase further on Saturday
as a stout 75-80 kt 500 mb jet streak digs south along the West
Coast. Behind the cold front we can still expect wind gusts into
the 40-50 mph range across some of the high coastal terrain. With
the orientation of the jet streak more parallel to the coast, we
aren't expecting a widespread high wind event over land, but some
of the coastal areas will still experience gusty conditions.
Therefore, have held off on any hazard issuance as of now. Keep
up with the latest forecasts for the most up to date information
as the timeline moves closer. Winds begin to diminish Sunday
evening as the system moves out.
&&
.AVIATION...
(00Z TAFS)
Issued at 543 PM PDT Wed Apr 30 2025
Coastal stratus and fog /MVFR-IFR/ will continue tonight and
Thursday morning, stratus and fog moving inland on onshore
breezes. VFR continues far inland. The marine layer depth varies
from 1000 feet in the Bay Area to more recently deepened to near
2000 feet north Central Coast.
Vicinity of SFO...VFR continues through the evening, MVFR
developing by 10z Thursday. VFR late morning Thursday through the
afternoon and early evening. Northwest to west wind 10 to 20 knots
with a few gusts to 25 knots this evening, diminishing to 5 to 10
knots tonight and Thursday morning, then increasing to 15 knots
Thursday afternoon.
SFO Bridge Approach...Similar to SFO.
Monterey Bay Terminals...Stratus /MVFR-IFR/ moving inland this
evening, stratus and fog /IFR/ late tonight and Thursday morning.
Mainly onshore winds 5 to 15 knots.
&&
.MARINE...
(Tonight through next Monday)
Issued at 442 PM PDT Wed Apr 30 2025
Northerly flow will persist over the coastal waters thanks to high
pressure over the Eastern Pacific and low pressure inland. Near-
gale force gusts will continue over the outer waters through
Thursday morning along with rough seas. Strong northwesterly
breezes return Friday afternoon and increase further over the
weekend with a passing storm system. Rough seas return to the
outer waters by Saturday.
&&
.MTR WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...None.
&&
$$
SHORT TERM...Behringer
LONG TERM....Behringer
AVIATION...Canepa
MARINE...MM
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Prepared by Boulder-Creek.com Weather at: Wed Apr 30 20:30:02 PDT 2025
From the National Weather Service
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