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

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FXUS66 KMTR 261114
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco Bay Area
414 AM PDT Mon Jun 26 2017

.SYNOPSIS...Pronounced onshore flow today will lead to cooler
conditions today and Tuesday compared to Sunday. Modest warming
is expected during the second half of the week, however highs will
fall well short of the recent heatwave.

&&

.DISCUSSION...as of 3:00 AM PDT Monday...Clouds mostly cleared
from our CWA later yesterday but satellite shows that they have
returned to San Mateo County northward. Clouds are continuing to
stream to the southeast and will be down into Monterey County
by sunrise. Patchy fog and drizzle can be expected into the
morning.

Synoptically the ridge of high pressure that had been overhead is
now well to the east while the onshore flow combined with a
moderate marine layer will lead to cooler conditions compared to
yesterday especially for spots away from the coast. Highs will
range from 60s near the water with mostly 70s to mid 80s inland.
In general, temperatures will be 3 to 6 degrees cooler compared to
Sunday. Similar conditions can be expected tonight into Tuesday.

By Wednesday a ridge of high pressure will rebuild into the
Pacific and toward our region. This will lead to slight warming
into Thursday. Inland highs will return to the upper 70s to lower
90s with coastal spots in the 60s to the mid 70s. Those
temperatures will hold into early next week and possibly into the
following week.

&&

.AVIATION...As of 04:10 AM PDT Monday...A non-typical marine
layer developed overnight and is impacting most terminals, but not
quiet yet at KMRY/KSNS. Cigs are mostly above 1k ft. Will have
mid to later morning burn off. Conf is rather low on stratus
impacting KMRY/KSNS. VFR this afternoon. Cigs return this
evening/overnight.

Vicinity of KSFO...MVFR cigs around SFO this morning. Based on
timing of yesterday and model guidance today will keep the 18z
clearing.  conf is low to moderate.

SFO Bridge Approach...Similar to KSFO.

Monterey Bay Terminals...VFR as of now, but will keep stratus
tracking toward KMRY with a TOA around 13Z. If cigs develop will
keep cigs for a brief time through 16-17Z. VFR this afternoon.
Cigs return tonight.

&&

.MARINE...as of 04:09 AM PDT Monday...Light to moderate northerly
winds will persist over the coastal waters as high pressure
remains over the Eastern Pacific. Locally stronger winds will be
possible along the immediate coast and in San Francisco Bay. A
dominant southerly swell will persist into  Wednesday morning.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .Tday...SCA...SF Bay from 1 PM
             SCA...Mry Bay from 1 PM
             SCA...Pigeon Pt to Pt Pinos 0-10 nm from 1 PM
             SCA...Pt Pinos to Pt Piedras Blancas 0-10 nm

&&

$$

PUBLIC FORECAST: Bell
AVIATION: MM
MARINE: MM


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