Scientific Forecaster Discussion
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Area forecast discussion
National Weather Service San Francisco Bay area
817 PM PDT Tuesday Apr 15 2014
Synopsis...dry conditions and near seasonal daytime temperatures
will continue across the region through this upcoming weekend as
upper level high pressure remains over the West Coast. Low clouds
and patchy fog will continue to impact coastal locations and adjacent
valleys during the overnight and early morning hours.
Discussion...as of 8:10 PM PDT Tuesday...high pressure covers the
area. The northerly pressure gradient has steadily increased to 7 mb
this evening. The onshore gradient has increased by about 1 mb
stronger than yesterday evening at this time...presently 2.7 mb.
Clouds persisted many places this morning but have since cleared
with the exception of low clouds persisting over the southern part
of the Monterey Bay waters.
Dry weather and mainly clear to clear skies will prevail through
middle-late week. The jet stream will keep the storm track well to
our north for most if not all of the upcoming forecast period.
Daytime high temperatures will range from the 60s coast to the 70s
and even some lower to middle 80s well inland Wednesday and
Aviation...as of 4:41 PM PDT Tuesday...the current visible
satellite image is showing clear skies over most areas except for
some patchy coastal stratus from about the Monterey Bay south. The
north to south surface pressure gradient has ramped up to over 6
mb from acv to sfo...thus expect less in the way of stratus impacts
across the Bay area taf locations tonight. There could be some
ceilings over San Jose and Oakland late...and stratus will impact the
Monterey and Salinas terminals overnight.
Vicinity of ksfo...VFR is expected to persist through the forecast
period with MVFR conditions developing late to the east of the
terminal and approach. West winds 10 to 20 knots will decrease this
Ksfo bridge approach...similar to ksfo.
Monterey Bay area terminals...VFR is anticipated through early
evening. Then MVFR/IFR ceilings will impact the Airport by late
... Pt to pt pinos 0-10 nm
Small Craft Advisory...pt pinos to pt Piedras Blancas 0-10 nm
glw...pt Arena to pt Reyes 10-60 nm
glw...pt Reyes to Pigeon pt 10-60 nm
Small Craft Advisory...Pigeon pt to pt pinos 10-60 nm
Small Craft Advisory...pt pinos to pt Piedras Blancas 10-60 nm
Small Craft Advisory...pt Arena to pt Reyes 0-10 nm
Small Craft Advisory...pt Reyes to Pigeon pt 0-10 nm
Small Craft Advisory...Monterey Bay until 11 PM
Public forecast: canepa
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