High Wind in California, December 14, 2018

Area Forecast Discussion...UPDATED
National Weather Service San Joaquin Valley - Hanford CA
411 PM PST Thu Dec 13 2018

...UPDATED AIR QUALITY SECTION...

.SYNOPSIS...Mostly dry weather will prevail through Friday with
night and morning fog possible in the San Joaquin Valley. There is
a small chance of light precipitation Saturday. A stronger system
will move into the area by Sunday evening for a period of rain
and mountain snow on Sunday Night and Monday. Dry weather will
return to the area by the middle of next week.

&&

.DISCUSSION...Dry upper ridge in place over CA today. Not much in
the way of fog this morning as it was basically confined to a
thin strip along the west side which burned off by late morning.
Sunny skies prevail across the area this afternoon and with a
typical seasonal haze layer present over the San Joaquin Valley
due to inversion conditions. Meanwhile, temperatures are running
at seasonable levels and close to yday at this time.

Clear skies and light winds tonight will allow for areas of fog to
develop tonight in the San Joaquin Valley. The fog should disperse
by late morning as a fairly potent shortwave trough takes aim at
the PAC NW and Norcal and provide for some mixing over our area. A
frontal band associated with this system is progged to reach
central CA Friday evening then wash out near the northern portions
of our area. A slight chance of late precipitation will be
possible over our northern areas Friday afternoon through Friday
night. Otherwise the main impacts that this system will have is
that it will bring a period a gusty winds to the southern Sierra
crest on Friday and inhibit fog formation in the San Joaquin
Valley this weekend as it should provide for some good mixing on
Saturday.

The WRF has been trending slower with the timing of a stronger
system which is progged to push into our area by Sunday evening.
The medium range models indicate that it will push through our
area Monday morning and bring a shot of light to moderate
precipitation across our area. The most favored area for
precipitation will be the Southern Sierra Nevada from Fresno
County northward where QPF progs are indicating a quarter to
three quarters of an inch of liquid precipitation with the snow
level running around 6000 feet. Two to four tenths of an inch of
rain is anticipated for the central San Joaquin Valley with
lesser amounts expected south of Fresno County. At this time, we
are not expecting snow to be an issue for the major passes in
Kern County on Monday.

The medium range models and their ensemble means are in good
agreement with a dry upper ridge building into central CA on
Tuesday and provide dry conditions across the area for the
remainder of next week. Increasing heights and thicknesses will
result in a noticeable warming trend taking place over the higher
elevations next week while fog and low clouds become more
prevalent in the San Joaquin Valley.

&&

.AVIATION...MVFR conditions in haze and mist will prevail in the
San Joaquin Valley and adjacent foothills through 08Z Friday.
Local IFR conditions in fog possible after 08Z. Otherwise VFR
conditions will prevail across Central California for the next 24
hours.

&&

.AIR QUALITY ISSUES...On Friday December 14 2018...
Fireplace/Wood Stove Burning Status is: No Burning Unless
Registered in Fresno... Kern... Kings... Madera... Merced and
Tulare Counties. Further information is available at Valleyair.org

&&

.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.html for additional information
an/or to provide feedback.

&&

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

&&

public...DS
avn/fw...Molina
synopsis...DS

weather.gov/hanford