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

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FXUS66 KMTR 250014
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco Bay Area
514 PM PDT Sat Jun 24 2017

.SYNOPSIS...Typical Bay Area weather pattern expected through the
weekend and into next week. Expect areas of night and morning low
clouds and fog followed by sunny and seasonably warm afternoons.

&&

.DISCUSSION...as of 2:09 PM PDT Saturday...Temperatures are
running cooler than yesterday especially across inland areas which
are running as many as 9 degrees cooler than yesterday at this
time. As of 1 PM, inland area readings ranged from the mid 70s to
mid 80s, with even the warmest areas (Fort Hunter Liggett and
Parkfield) in the mid to upper 90s, also 8-10 degrees cooler than
24 hours ago. The surface pressure gradient from SFO to SAC is
still hovering around 3 mb, and the Fort Ord profiler is still
indicating a marine layer depth of around 2000 feet. Look for
coastal stratus to fill into inland valleys again tonight.

Meanwhile, we area still looking at the mid and upper level
moisture streaming up from the south. Latest KMUX scans show a few
showers over the coastal waters west of the Big Sur coastline. So
far, no lightning strikes have been detected anywhere near our
area, but a slight chance remains in the forecast for the Santa
Lucia range as well as the southern portion of the Diablo Range
in San Benito County. This activity is expected to end by evening.

The cooling trend is forecast to persist into Sunday as an upper
trough approaches the coast, strengthens the onshore flow and
ramps up the marine layer. Hottest high temps in the 90s should
be confined to only the most interior sections of the district
while most areas will stay in the upper 60s to lower 80s range.
Seasonable weather conditions are expected to persist through the
week with night and morning coastal clouds and afternoon sun.

&&

.AVIATION...As of 4:50 PM PDT Saturday...For 00Z TAFs...Onshore
flow at the surface along with a 1600 ft marine layer similar to
last night will result in similar timing for the return and the
extent of the stratus tonight. Meanwhile high clouds streaming in
with the upper level southerly winds will continue to move across
the region through tonight.

Vicinity of KSFO...VFR conditions will prevail through this
evening with cigs anticipated to return to KOAK around 04z and
over KSFO around 08z tonight. Low clouds will scatter out around
15z to 17z Sunday morning. Moderate west winds around 15 to 20 kt
will persist through this evening then ease to around 10 kt
overnight.

SFO Bridge Approach...Similar to KSFO.

Monterey Bay Terminals...MVFR cigs will return early to Monterey
area terminals this afternoon and will rapidly lower to IFR by
02z and LIFR around 04z. Low clouds will scatter our around 17z
Sunday morning. Light west winds.

&&

.MARINE...as of 8:35 AM PDT Saturday...Generally light northerly
winds are expected this afternoon across the waters with higher
wind speeds along the Big Sur coast. Wave heights and swell are
forecast to decrease through the weekend.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .Tngt...SCA...Pt Pinos to Pt Piedras Blancas 0-10 nm
             SCA...SF Bay until 9 PM

&&

$$

PUBLIC FORECAST: Sims
AVIATION: CW
MARINE: Rowe


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