171
FXUS66 KMTR 292344
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco CA
444 PM PDT Mon Apr 29 2024

...New AVIATION, MARINE...

.SYNOPSIS...
Issued at 1202 AM PDT Mon Apr 29 2024

High pressure brings quiet weather and slowly warming temperatures
this week. Breezy onshore winds will keep temperatures along the
coast cooler however. Cooler and more unsettled conditions return
for next weekend into next week with light rain chances in the
forecast.

&&

.SHORT TERM...
(This evening through Tuesday)
Issued at 203 PM PDT Mon Apr 29 2024

Eastward moving high pressure over the Eastern Pacific Ocean is
allowing for the pressure gradient to tighten, leading to strong and
gusty northwesterly winds of 30-40 mph, especially along the
immediate coastline and higher peaks. The primary impact from these
strong and gusty northwesterly winds are for mariners as Gale
Warnings and Small Craft Advisories are in effect until at least 3
AM Tuesday for all marine zones. High pressure is also allowing for
a warming trend to take place with interior locations reaching the
70s while the coast will be kept cool in the upper 50s due to the
persistent northwesterly wind. Skies will remain clear overnight
with lows in the 40s.

&&

.LONG TERM...
(Tuesday night through next Sunday)
Issued at 203 PM PDT Mon Apr 29 2024

A subtle ridge will be present over California through Friday,
allowing for clear skies and warm weather. While we continue to be
below Wind Advisory criteria, northwesterly winds will continue to
be strong and gusty, with elevations above 2,500 feet expected to
see gusts in the 40-50 mph range. Thursday will be the warmest day
of the week with the coast reaching the upper 60s and interior
locations reaching 80 degrees as the pressure gradient is allowed to
relax and winds begin to diminish. HeatRisk does reach minor
criteria on Thursday, so ensure to stay adequately hydrated and
apply sunscreen!

By Saturday, the pattern changes as an upper-level low approaches
the Pacific Northwest and its associated weak cold front drops into
California. There is uncertainty in location and strength of the
low, but the latest forecast update has extended Probability of
Precipitation chances further south. The rain is forecast to be
light and unimpactful with higher elevations reaching up to a
quarter of an inch. This trend of cooler and wetter weather is set
to continue into the first full week of May.

&&

.AVIATION...
(00Z TAFS)
Issued at 444 PM PDT Mon Apr 29 2024

VFR through the TAF period for all terminals, with the biggest
concern will be the winds. W/NW winds remain breezy and gusty and
will slowly diminish for most terminals tonight and rebuild towards
late Tuesday morning.

Vicinity of SFO...VFR through the TAF period. Winds remain strong
and gusty, with speeds above 35 knots. Therefore, AWW was issues
through 05Z. Winds gradually diminish to moderate overnight but
rebuilds again towards Tuesday afternoon.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...VFR through the TAF period. If stratus
rebuilds overnight, expect some scattered clouds, with no changes to
flight categories.

&&

.MARINE...
(Tonight through next Saturday)
Issued at 444 PM PDT Mon Apr 29 2024

A strong northerly pressure gradient will maintain hazardous
conditions due to gale force wind gusts. Gale force wind gusts  of
40 to 45 knots will be possible over the outer waters and
portions of the immediate coast near Point Reyes and Point Sur.
The strong winds will result in fresh steep wind waves with
heights reaching 10 to 12 feet. Conditions will gradually improve
late in the week into next week.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...Small Craft Advisory until 3 AM PDT Tuesday for Mry Bay-SF Bay N
     of Bay Bridge.

     Small Craft Advisory from 3 PM Tuesday to 3 AM PDT Wednesday for
     SF Bay N of Bay Bridge.

     Small Craft Advisory from 9 AM Tuesday to 3 AM PDT Wednesday for
     Mry Bay.

     Gale Warning until 3 AM PDT Wednesday for Pigeon Pt to Pt Pinos
     10-60 NM-Pt Arena to Pt Reyes 0-10 nm-Pt Arena to Pt Reyes
     10-60 NM-Pt Pinos to Pt Piedras Blancas 0-10 nm.

     Small Craft Advisory until 3 AM PDT Wednesday for Pigeon Pt to
     Pt Pinos 0-10 nm-Pt Reyes to Pigeon Pt 0-10 nm.

&&

$$

SHORT TERM...Sarment
LONG TERM....Sarment
AVIATION...SO
MARINE...MM

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