Area Forecast Discussion
Issued by NWS San Francisco Bay Area, CA

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FXUS66 KMTR 220011

Area Forecast Discussion
National Weather Service San Francisco Bay Area
411 PM PST Mon Jan 21 2019

.SYNOPSIS...Seasonably cool and dry conditions will persist through
midweek with a gradual warming trend late in the week.

&& of 02:40 PM PST Monday...Tranquil weather
conditions have return to the entire region this afternoon as
showers ended earlier this morning. Conditions are still locally
breezy and cool with temperatures only in the 50s in most urban
areas and 40s in the higher elevations. With the modest northwest
flow, fair weather clouds continue over the hills/mountains.

A gradual warming trend will begin on Tuesday and persist through
late week as high pressure develops over the eastern Pacific. By
Friday and Saturday, weak offshore flow is forecast to develop which
will allow for temperatures to warm above seasonal averages. Look
for widespread 60s to lower 70s (mainly across the Central Coast) by
late week. Overnight temperatures will be cool with the possibility
of patchy frost in the inland valleys the next few nights as winds
relax under clear sky conditions. These temperatures will likely
moderate slightly late in the week with the offshore flow, yet
remain seasonably cool.

Little change is forecast in the extended as the region will be
under the influence of high pressure. The medium range models do
show the ridge shifting a bit back offshore early next week
resulting in slightly cooler daytime temperatures. Otherwise, dry
weather conditions will persist and likely continue through the end
of the month.


.AVIATION...As of 4:10 PM PST Monday...For 00Z tafs. VFR
conditions through the period with FEW to SCT clouds through
sunset at around 3,000 to 4,000 feet. Clear skies thereafter.
W/NW winds will ease through the evening and turn more to the
N/NE overnight.

Vicinity of KSFO...VFR through the period. High confidence. FEW to
SCT clouds around 4,000 feet through sunset and clear thereafter.
W/NW winds will diminish during the evening and turn N/NE

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...VFR conditions through the period with
FEW to SCT clouds around 3,000 to 4,000 feet until sunset.
Generally light winds through the period.


.MARINE...As of 2:08 PM PST Monday...Gusty northwest winds will
persist today and this evening across the coastal waters. Winds
will become more northerly and diminish along the coast later
tonight and into tomorrow as high pressure builds over the region.
Light to moderate northwest swells will continue throughout the
week with no storm systems forecast for the next several days.


     .Tngt...SCA...Pigeon Pt to Pt Pinos 0-10 nm
             SCA...Pt Pinos to Pt Piedras Blancas 0-10 nm
             SCA...Pt Arena to Pigeon Pt 10-60 nm
             SCA...Pigeon Pt to Pt Piedras Blancas 10-60 nm
             SCA...Pt Arena to Pt Reyes 0-10 nm until 3 AM
             SCA...Pt Reyes to Pigeon Pt 0-10 nm until 3 AM
             SCA...Mry Bay until 9 PM




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