FXUS66 KMTR 240455
AFDMTR
Area Forecast Discussion
National Weather Service San Francisco CA
955 PM PDT Mon Mar 23 2026
...New AVIATION, MARINE...
.KEY MESSAGES...
Updated at 113 PM PDT Mon Mar 23 2026
- Above normal temperatures will persist through the week into
the weekend
- Dry weather through 7 day outlook; potential for light rain
beginning of April
&&
.SHORT TERM...
Issued at 113 PM PDT Mon Mar 23 2026
(This evening through Tuesday)
The heat wave is over but temperatures continue to run 10-15
degrees today, some elevated interior locations may see highs 20
degrees above normal by the end of the afternoon. The ridge that
brought the record breaking heat last week has shifted to the
southeast over the desert southwest, however it continues dominate
our pattern and daily forecast. The ridge axis will continue to
build back up over California for the remainder of today and
tonight, then pivot eastward Tuesday. Tuesday will be slightly
warmer than today, but barely noticeable. Overnight lows will
also run 5-10 degrees above normal for most locations, tonight and
through the remainder of the extended forecast. The stable
environment will provide pleasant weather with mostly clear skies,
especially away from the coast. Weak onshore flow will result in
pockets of marine stratus overnight along the coast, but will
struggle to move very far inland with the ridge still firmly in
control.
&&
.LONG TERM...
Issued at 113 PM PDT Mon Mar 23 2026
(Tuesday night through next Sunday)
A progressive trough will weaken the western periphery of the
H50 height field through the middle of the week, with only slight
declines in daytime highs Wednesday and Thursday. The marine layer
quickly increase late Tuesday night through Wednesday morning as
the progressive trough tracks inland. The ridge rebounds on
Thursday and starts to build back offshore bringing back warmer
temperatures and compressing the marine layer once again Friday.
The offshore troughing expected as the longwave pattern becomes
more amplified will result in the reemergence of the marine layer
over the weekend into next week. There is a signal for some
rainfall the first half of next week, but confidence is low that
it will bring much in the way of wetting rainfall for our area.
&&
.AVIATION...
(06Z TAFS)
Issued at 946 PM PDT Mon Mar 23 2026
Currently VFR at all terminals. High confidence in VFR and diurnal
winds prevailing. Low probability for sub-VFR conditions to return
tonight, with the relatively greatest chances at HAF, MRY, SNS,
and STS. If sub-VFR conditions do develop, it will likely be brief
and/or intermittent around the 12Z timeframe. Haze will reduce
slant range visibilities.
Vicinity of SFO...Currently VFR with westerly flow. High
confidence in VFR and diurnal winds prevailing.
SFO Bridge Approach...Similar to SFO.
Monterey Bay Terminals...Currently VFR with southwesterly flow at
MRY and VFR with northerly flow at SNS. High confidence in VFR
and diurnal winds prevailing.
&&
.MARINE...
(Tonight through next Sunday)
Issued at 946 PM PDT Mon Mar 23 2026
Moderate to fresh northwesterly breezes and moderate seas will
prevail through Tuesday. Strong to near gale northerly winds will
develop Wednesday into Thursday with gale force gusts expected for
the inner waters and outer waters. Rough to very rough seas will
build as a result. Conditions improve by Friday.
&&
.MTR WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...Small Craft Advisory from 3 PM to 9 PM PDT Tuesday for Pt Pinos
to Pt Piedras Blancas 0-10 nm.
Small Craft Advisory from 9 AM to 9 PM PDT Wednesday for Pt
Arena to Pt Reyes 10-60 NM.
Gale Watch from Wednesday evening through Thursday afternoon for
Pt Arena to Pt Reyes 10-60 NM.
&&
$$
SHORT TERM...JM
LONG TERM....JM
AVIATION...Sarment
MARINE...Sarment
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Prepared by Boulder-Creek.com Weather at: Mon Mar 23 22:30:02 PDT 2026
From the National Weather Service
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