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000
FXUS66 KMTR 160740
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco CA
1240 AM PDT Tue Apr 16 2024

...New SHORT TERM, LONG TERM, AVIATION, MARINE...

.SYNOPSIS...
Issued at 127 PM PDT Mon Apr 15 2024

Dry conditions are here to stay with a gradual warming trend through
midweek, peaking on Wednesday and/or Thursday. Onshore flow
increases toward the end of the week; cooling temperatures near the
coast as marine stratus returns.

&&

.SHORT TERM...
(Today and tonight)
Issued at 1238 AM PDT Tue Apr 16 2024

A high pressure ridge aloft will center off the California coast
with low-level ridging locating across the northeast Pacific. As
lower pressures develop inland this will bring a modest pressure
gradient and light onshore (N-NW) winds today. Given the ridging
influence temperatures inland will warm into the 70s this afternoon
with 60s along the coast. Readings tonight will drop into the upper
40s to lower 50s.

&&

.LONG TERM...
(Wednesday through Monday)
Issued at 1238 AM PDT Tue Apr 16 2024

The upper ridge will gain prominence on Wednesday and Thursday
bringing milder temperatures to the region. High in the warmer
inland valleys will top out in the upper 70s to lower 80s, with 60s
to around 70 along the coast and bays.

The ridge will flatten thereafter in response to a weak perturbation
translating through the mean westerly flow with stronger onshore
flow and cooler temperatures. The ridge looks to rebuild by early
next week with a slight warming trend. However onshore winds will
keep things cooler by the coast. Dry conditions will prevail.

&&

.AVIATION...
(06Z TAFS)
Issued at 1238 AM PDT Tue Apr 16 2024

While  most areas stay VFR, pockets of fog will build in the North
Bay early Tuesday morning. The SF Bay will have some lower clouds
build into the morning, causing MVFR at OAK. Expect light winds
through the late morning followed by moderate to breezy winds into
the afternoon as widespread VFR returns.

Vicinity of SFO...VFR through the TAF period. Winds stay light into
the afternoon before moderate westerly winds return. these winds
linger into the night before becoming light and variable.

SFO Bridge Approach...Similar to SFO

Monterey Bay Terminals...VFR through the TAF period. Expect light
winds into the late morning before moderate westerly winds build for
Tuesday afternoon. These winds become light again into Tuesday
night.

&&

.MARINE...
Issued at 1238 AM PDT Tue Apr 16 2024

High pressure will persist resulting in gusty northwest winds
through much of the week. Gale force gusts are likely over the far
northern waters Tuesday afternoon through late night. Moderate
period northwest swell continues to move through the waters this
week, though shortens in period to around 8-10 seconds near
Wednesday. Light, longer period (18 seconds) southerly swell will
also be present through the week.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...Small Craft Advisory until 3 AM PDT early this morning for Pt
     Arena to Pt Reyes 0-10 nm-Pt Pinos to Pt Piedras Blancas 0-
     10 nm.

     Small Craft Advisory from 3 PM this afternoon to 3 AM PDT
     Wednesday for Pt Arena to Pt Reyes 0-10 nm-Pt Pinos to Pt
     Piedras Blancas 0-10 nm.

     Small Craft Advisory until 3 PM PDT this afternoon for Pt Arena
     to Pt Reyes 10-60 NM.

     Gale Warning from 3 PM this afternoon to 3 AM PDT Wednesday for
     Pt Arena to Pt Reyes 10-60 NM.

     Small Craft Advisory until 9 AM PDT Wednesday for Pigeon Pt to
     Pt Pinos 10-60 NM.

&&

$$

SHORT TERM...SPM
LONG TERM....SPM
AVIATION...Murdock
MARINE...Canepa

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