FXUS66 KMTR 221200
AFDMTR
Area Forecast Discussion
National Weather Service San Francisco CA
400 AM PST Wed Jan 22 2025
...New SYNOPSIS, SHORT TERM, LONG TERM, AVIATION, MARINE...
.SYNOPSIS...
Issued at 355 AM PST Wed Jan 22 2025
Cool morning and warm afternoon temperatures will continue today
and tomorrow before a pattern change for the end of the week into
the weekend brings cooler daytime temperatures and scattered
light rain chances, primarily for the Central Coast on Saturday.
&&
.SHORT TERM...
(Today and tonight)
Issued at 355 AM PST Wed Jan 22 2025
Upper level ridging pattern centered over coastal California will
continue to amplify and build north today and tomorrow. A weak fetch
of offshore flow near the surface will keep skies mostly clear with
light winds today and tomorrow along with gradual warming of daytime
highs, especially inland. The clear skies and light winds will allow
for radiational cooling to keep overnight lows mostly below normal
with another round of Freeze/Frost products likely for Wednesday
morning once this mornings products expire at 9 AM PST. Highs on
Wednesday will increase slightly near the coast and around 5 degrees
inland from todays values.
&&
.LONG TERM...
(Thursday through Tuesday)
Issued at 355 AM PST Wed Jan 22 2025
The warming of daytime highs continues on Thursday after another
cold start. Portions of interior southern Monterey County may see
an impressive diurnal warming from the upper 20s early Thursday
morning to upper 70s in the afternoon. A disturbance over the
Pacific Northwest late Thursday into Friday begins to break down
the amplified ridging across the west, with an upper low
eventually splitting off from the Polar Jet on Saturday, then
lingering over SOCAL for the remainder of the weekend into next
week. The developing upper low will definitely bring cooler
daytime temperatures for the weekend through the remainder of the
extended forecast. Saw no need to change the slight chance PoPs
from the NBM for the weekend , as it seems to capture the weak
signal for rain/snow chances (snow chances confined to elevated
locations in S Monterey, San Benito Counties and East Bay Hills).
Widespread wetting rains are not expected, and locations fortunate
enough to see some precip should expect less than a tenth of an
inch.
&&
.AVIATION...
(12Z TAFS)
Issued at 355 AM PST Wed Jan 22 2025
Currently VFR at all terminals. High confidence in VFR through the
TAF period. The afternoon sea breeze will be followed by offshore
flow tonight.
Vicinity of SFO...Currently VFR with southerly flow. High confidence
in VFR through the TAF period. Southerly winds will back through the
morning to become offshore. The sea breeze will return this
afternoon with a return to offshore flow tonight.
SFO Bridge Approach...Similar to SFO.
Monterey Bay Terminals...Currently VFR with southeasterly flow at
MRY and VFR with southerly flow at SNS. High confidence in VFR
through the TAF period. The sea breeze will return to both terminals
this afternoon with easterly flow prevailing overnight.
&&
.MARINE...
(Today through Monday)
Issued at 355 AM PST Wed Jan 22 2025
Moderate to fresh northerly breezes and moderate seas are expected
through Thursday. Seas become rough to very rough by Friday with
gale force gusts expected Friday and Saturday.
&&
.MTR WATCHES/WARNINGS/ADVISORIES...
CA...Frost Advisory until 10 AM PST this morning for CAZ502-504-505-
508-510-512>515-517-518-528>530.
Freeze Warning until 10 AM PST this morning for CAZ506-516.
PZ...None.
&&
$$
SHORT TERM...JM
LONG TERM....JM
AVIATION...Sarment
MARINE...Sarment
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Prepared by Boulder-Creek.com Weather at: Wed Jan 22 08:30:02 PST 2025
From the National Weather Service
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