Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA

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FXUS66 KHNX 172012

Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
112 PM PDT Sat Mar 17 2018

Low pressure and a few showers or thunderstorms exit the central
California interior by early tonight. High pressure then builds
in Sunday with slightly warmer temperatures. It will be dry on
Sunday and Monday. Then, the next Pacific system takes aim for the
area on Tuesday with more rain and mountain snow.


Large trough to move east into the Great Basin tonight. Thinking
is that a few lingering showers or even isolated thunderstorm this
evening will make way for clearing over central California.
Clearing sky behind trough also means cool temperatures and patchy
fog development. With a wet ground across much of the San Joaquin
Valley, just can`t rule out dense fog development. Fog should
dissipate rather quickly after sunrise on Sunday.

Heights begin to build over the west coast of California on
Sunday with a much drier airmass. It could be breezy in spots over
both the higher elevations of Kern County and the Sierra Crest
with subsidence working in behind aforementioned trough.
Otherwise, a light surface wind can be expected through Monday.

Models agree that ridge holds on until early Tuesday, then
moisture begins to increase and deepen. Will begin to prepare for
a very moist, subtropical system to approach central California.
Confidence is growing that significant precipitation will return
to the area around the mid-week period. ECMWF has it arriving a
little slower, but all medium range models are in good agreement
on storm`s strength and duration. Without going into details yet,
it should be very wet Tuesday night, Wednesday, and possibly into
early Thursday. Will continue to monitor and watch the critical
snow levels for the Sierra Nevada over the next few days. Our wet
March continues!


Areas of MVFR conditions due to widely scattered showers in the
San Joaquin Valley and adjacent foothills until 03Z, then clearing.
A few higher mountain peaks will remain obscured in clouds
tonight, including the Kern County mountains. Otherwise, VFR and
generally clear conditions will prevail Sunday into Sunday night.





The level of certainty for days 1 and 2 is high.
The level of certainty for days 3 through 7 is medium.

Certainty levels include low...medium...and high. Please visit for additional information
an/or to provide feedback.


.HNX Watches/Warnings/Advisories...


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