Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA

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000
FXUS66 KHNX 220934
AFDHNX

Area Forecast Discussion
National Weather Service Hanford CA
134 AM PST Wed Jan 22 2020

.SYNOPSIS...
Ridge of high pressure begins to build back over the forecast area
for the next few days, leading to dry weather with fog possible
each morning through Saturday. A disturbance will bring valley
rain and mountain snow Sunday, before a dry weather pattern
resumes next week.

&&

.DISCUSSION...
A few lingering showers in the northern valley this morning will
likely dissipate by 14z. Gusty winds in the Mojave Desert are
occuring this morning associated with the passage of the trough to
our north/localized strong pressure gradients. Gusts up to 55 mph
are possible through around 9 AM today, before abating as the
trough shifts east. A ridge of high pressure aloft will begin to
build over the forecast area today, which will increase high
temperatures across the forecast area. Highs in the mid 60s are
possible in the San Joaquin Valley by the end of the work week and
highs near 70 are possible in the Mojave Desert. The ridge of
high pressure aloft will lead to calm and clear nights, which may
encourage fog formation across the valley, particularly Thursday,
Friday, and Saturday morning.

By Saturday afternoon, good model agreement exists in a trough
approaching the west coast. Precip will begin to enter the
northern portion of our forecast area by Sunday morning, and
will spread southward throughout the day. Currently, snow levels
are forecast to be in the 7,000-8,000 ft range, with 7-10 inches
of snow possible in the Sierra Nevada above 7,000 feet. Rainfall
amounts in the valley are currently forecast to range from one-
tenth of an inch up to fourth-tenths of an inch. As the trough
exits Monday, periods of gusty winds appear to be possible through
the Tehachapi Mountains and Passes as well as the Mojave Desert.
Thereafter, GEFS and EPS ensemble means are showing high pressure
resume across the forecast area, which would lead to another
period of dry weather.


&&

.AVIATION...
MVFR and local IFR visibilities likely across the San Joaquin
Valley this morning in haze and mist through 18z. Local MVFR cigs
and VIS in showers through 14z in the San Joaquin Valley.
Otherwise, VFR conditions will prevail for the next 24 hours
across the Central California Interior.

&&

.AIR QUALITY ISSUES...
On Wednesday January 22 2020... 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.html for additional information
an/or to provide feedback.

&&

.HNX WATCHES/WARNINGS/ADVISORIES...
Wind Advisory until 9 AM PST this morning for CAZ196-198-199.

&&

$$

public/aviation...Bollenbacher
PIO/IDSS....BS

weather.gov/hanford


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