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

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

000
FXUS66 KMTR 231740
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco Bay Area
940 AM PST Fri Feb 23 2018

.SYNOPSIS...Mostly sunny skies will prevail around the Bay Area
today. Another very cool night is forecast for Friday night. Dry
weather and slightly warmer temperatures are expected over the
weekend. Cooler, unsettled weather is expected to return by early
next week with another system bringing rain to the area later next
week.

&&

.DISCUSSION...as of 07:51 AM PST Friday...Decreased winds and
clear skies led to a rather chilly start this morning. Morning
lows ranged from the 20s across the interior and inland valleys
with 30s/low 40s closer to the coast and major urban centers. The
morning lows are running about 10 to 18 degrees colder this
morning than Thursday morning. Today`s weather will feature sunny
skies, but below normal high temperatures. Highs will be in the
50s and 40s across the highest peaks.

No morning update planned at this time.

Afternoon forecast package will focus on chilly overnight lows
this weekend and rain (mt snow) next week.

&&

.PREV DISCUSSION...As of 2:50 AM PST Friday...

Dry conditions and a bit of a warming trend are expected over the
weekend, although morning lows on Saturday will be chilly once
again. With weak high pressure building along the coast, By
Sunday, the high temperatures are forecast to warm to the lower
60s in warmest areas.

Another upper trough is then progged to drop south into Northern
California from British Columbia early next week bringing rain
chances to the area by Monday. Once again, a limited moisture
source will keep QPFs low on the low side with less than a quarter
of an inch expected through Tuesday morning. Another system near
the end of the workweek could produce more rain for the area with
the trough farther west over the Pacific than the latest systems.
There are differences in model solutions with this system, though,
with the latest runs of the GFS keeping precip farther to the
north through the following weekend.

&&

.AVIATION...as of 9:40 AM PST Friday...for 18Z TAFs. VFR
conditions through the period with mainly clear skies. Winds west
to northwest at 10 to 20 kt in the afternoon.

Vicinity of KSFO...VFR conditions are expected to prevail with
mainly clear skies. West to northwest winds 10 to 20 kt before
decreasing in the evening.

SFO Bridge Approach...Similar to KSFO.

Monterey Bay Terminals...VFR through the period with mainly clear
skies. Possibly FEW to SCT low clouds tonight into tomorrow
morning. Onshore winds this afternoon.


&&

.MARINE...as of 08:15 AM PST Friday...Gale-force northerly winds
over the outer waters will subside later this morning. High
pressure over the eastern Pacific will continue to produce
moderate to strong winds over the coastal waters into the weekend.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .Tday...SCA...Pt Arena to Pigeon Pt 10-60 nm from 10 AM
             SCA...Pigeon Pt to Pt Piedras Blancas 10-60 nm from 10 AM
             GLW...Pt Arena to Pigeon Pt 10-60 nm until 10 AM
             GLW...Pigeon Pt to Pt Piedras Blancas 10-60 nm until 10 AM
             SCA...Pt Arena to Pt Reyes 0-10 nm
             SCA...Pt Reyes to Pigeon Pt 0-10 nm
             SCA...Pt Pinos to Pt Piedras Blancas 0-10 nm

&&

$$

PUBLIC FORECAST: MM/Sims
AVIATION: AS
MARINE: AS

Visit us at www.weather.gov/sanfrancisco

Follow us on Facebook, Twitter, and YouTube at:
www.facebook.com/nwsbayarea
www.twitter.com/nwsbayarea
www.youtube.com/nwsbayarea


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.