Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA

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FXUS66 KHNX 091100
AFDHNX

Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
300 AM PST Sat Dec 9 2017

.SYNOPSIS...High pressure will remain over the region for the
next several days. This will result in a continuation of dry
conditions with near normal temperatures for the Central
California Interior.

&&

.DISCUSSION...Large amplified upper ridge remains in place over
the western CONUS keeping a very dry airmass in place over our
area. Temperatures are running close to yday at this time and
winds are generally light as p-grads are fairly weak. IR imagery
indicating thin high clouds are continuing to push into central
CA. Little change in the pattern is expected through the weekend
as the upper high remains centered over Norcal.

The WRF is in good agreement with some previous medium range
models advertising an upper low to move up from the southwest and
become centered near northern Baja Sunday Night and Monday forming
a rex block. This would also result in the re-establishment of an
increased easterly flow over Socal and provide for another period
of gusty winds south of our area. Some uncertainty exists on how
far north the stronger wind gusts will occur, and if Kern County
will be impacted. At this time the operational models are
indicating a brief period of increased offshore p-grads late
Sunday Night and early Monday, but winds are expected to remain
below advisory criteria in Kern County. Skies will become mainly
clear again in the dry easterly flow pattern.

The medium range models are indicating the upper ridge
retrograding offshore some by late next week which will turn the
upper to a more northerly direction, but our area will continue to
remain under a dry airmass and no precipitation is expected at
least through the end of next week.

&&

.AVIATION...Areas of MVFR in haze and mist will occur in the San
Joaquin Valley with local IFR visibility until 18Z Saturday and
again after 06Z Sunday . Otherwise, VFR conditions will prevail over
the central CA interior during the next 24 hours.

&&

.AIR QUALITY ISSUES...On Saturday December 9 2017... Unhealthy
for sensitive groups in Kings County. Fireplace/Wood Stove
Burning Status is: No Burning Unless Registered in Fresno...
Kern... Kings... Madera and Tulare Counties. Further information
is available at Valleyair.org

&&

.CERTAINTY...

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
www.weather.gov/hnx/certainty.php for additional information
an/or to provide feedback.

&&

.HNX Watches/Warnings/Advisories...NONE.

&&

$$

public...DS
avn/fw...Bean
synopsis...DS

weather.gov/hanford


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