High Wind in California, December 12, 2018

Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
326 AM PST Wed Dec 12 2018

.SYNOPSIS...
Dry weather will prevail through at least Thursday with night and
morning fog possible in the San Joaquin Valley. There is a small
chance of light precipitation Friday night. A stronger system is
possible by Sunday for moderate rain and mountain snow.

&&

.DISCUSSION...
A low pressure system moving across the Pacific Northwest will
move into the Rockies later today. This system is bringing high
clouds across central California early this morning. The weak tail
end of the cold front associated with this system is falling
apart as it moves into the CWA, but is helping to slowly erode
away at the last of the low clouds in the southeast part of the
San Joaquin Valley. The high clouds are also preventing fog from
developing in the areas of the Valley that cleared earlier. It is
possible that as the high clouds continue to move south that some
patchy fog could develop, but do not expect dense fog.

As the low moves east, high pressure will move over California
tonight and Thursday. This will mean less cloud cover, light
winds, and better conditions for fog development late tonight and
Thursday morning and again for Friday morning. The ridge of high
pressure does not hang around very long as another low pressure
system moves into the Pacific Northwest and Northern California
Friday afternoon. Models have not been in great agreement on
whether this system will bring rain to central California, as we
once again experience the tail end of the system. It looks
reasonable to continue the slight chance of showers, mainly
Fresno county northward, Friday night with very light amounts.

An active pattern will continue to bring storm systems into the
Pacific Northwest through the weekend and into at least the middle
of next week. Although the main part of these storms will stay to
our north, a system is advertised by the models to be strong
enough to persist as it moves into Northern and Central California
Sunday night and Monday. Have continue with chance POPs across the
area during this time with the potential for light rain, and
possibly moderate rain across the northern part of the CWA. Then
it looks like dry weather and high pressure return next Tuesday
and Wednesday.

&&

.AVIATION...
In the San Joaquin Valley and over the southern Sierra foothills,
MVFR conditions in fog, low clouds, haze, and mist through 20z.
Otherwise, mainly VFR conditions will prevail across the central CA
interior for the next 24 hours.

&&

.AIR QUALITY ISSUES...
On Wednesday December 12 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...Bean
avn/fw...Andersen
synopsis...Bean

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