Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA

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FXUS66 KHNX 172313
AFDHNX

Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
313 PM PST Sun Dec 17 2017

.UPDATE...Updated air quality issues.

&&

.SYNOPSIS...
Quiet pattern will continue through Wednesday, when a strong cold
front moves through the area. Not expecting a lot of precipitation
with this frontal passage, but could see some, especially in the
Central Sierra. The end of the week will be quite cold, with
freeze potential on Friday morning.

&&

.DISCUSSION...
Upper level ridge will continue to settle back over head as the
area sits in between to systems. The good news is that next system
will slide in Wednesday. Guidance has come in wetter with the
associated cold front. This can`t be ruled out given the dynamics
in place. Best timing looks to be during the daytime Wednesday as
the main energy from the shortwave trough moves through.

Behind fropa there remains the possibility of gusty winds and
blowing dust, though rainfall could hamper the dust some what.
Nevertheless, those winds should diminish by nightfall across the
San Joaquin Valley. However, colder air will continue to slide
into the forecast area as the flow aloft continues to have a
northerly component.

This should keep morning lows at or around freezing across much of
the San Joaquin Valley and Kern Desert. Friday morning will be the
coldest morning, with a widespread freeze likely.

Then yet another shortwave trough is progged to slide down the
mean flow. Not expecting too much out of this system, but it does
look like it will keep the upper ridge in a much more favorable
location. Still, a good deal of uncertainty by the end of the
forecast, but still nice to see some change in the large scale
pattern. Stay tuned.

&&

.AVIATION...
Strong northeast winds of 35 knots or greater will continue along
the Sierra crest through 00z Monday. MVFR conditions possible in
parts of the San Joaquin Valley after 0900z through 1800z.
Otherwise, VFR conditions will prevail across the central California
interior during the next 24 hours.

&&

.AIR QUALITY ISSUES...
On Monday December 18 2017... 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.php for additional information
an/or to provide feedback.

&&

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

$$

public...Meadows
avn/fw...JDB
synopsis...Meadows

weather.gov/hanford



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