Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA

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FXUS66 KHNX 231202
AFDHNX

Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
402 AM PST Fri Feb 23 2018

.SYNOPSIS...
Precipitation will give way to dry and cool conditions as a
weather system moves out of the region. Freezing temperatures are
forecast across much of the SJ Valley by early Saturday morning in
the wake of the cold system. Dry weather is expected over the
weekend then another cold storm system arrives on Monday.

&&

.DISCUSSION...
A shortwave impulse swinging through the upper trough over the
western US is pulling away from the region and precipitation is
now limited to some lingering showers over the Kern County
mountains and Tulare County foothills. Short term, high res models
generally continue this trend, with a little additional upslope
activity in Kern County into mid morning. With impacts ending this
morning, the Winter Weather Advisories will end on or before
schedule this morning.

As skies clear and winds decrease tonight, the cold air behind the
system will allow for another freezing episode in the SJ Valley
through early Saturday morning. The Freeze Watch there has been
upgraded to a Freeze Warning.

The weekend will then be seasonably cool and dry, as models agree
on a dry northwest flow over our area while another weak
shortwave maintains a trajectory to our east. Model agreement
continues through early next week, as the next trough drops south
and closes a low over central CA by Tuesday morning. This will
bring another period of cool weather and precipitation across the
region Monday into Tuesday morning.

Models begin to diverge after Tuesday, but generally agree on
another system affecting our area later in the week. Accounting
for differences in strength and timing, our forecast for now calls
for another chance of rain and mountain snow by Thursday. Timing
and details of this will be refined with further model runs.


&&

.AVIATION...
Mountain obscurations lingering over portions of the Southern
Sierra Nevada and Kern County Mountains through 18Z this morning.
Otherwise VFR conditions expected across the remainder of the
Central CA Interior during the next 24 hours.

&&

.AIR QUALITY ISSUES...
None.

&&

.CERTAINTY...

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

Certainty levels include low...medium...and high. Please visit
www.weather.gov/hnx/certainty.php for additional information
an/or to provide feedback.

&&

.HNX Watches/Warnings/Advisories...
Winter Weather Advisory until 10 AM PST this morning CAZ095.

Winter Weather Advisory until 6 AM PST early this morning
CAZ093-094.

Freeze Warning from 2 AM to 8 AM PST Saturday CAZ089>092.

&&

$$

public...JEB
avn/fw...Dudley
synopsis...JEB

weather.gov/hanford


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