FXUS66 KHNX 161122
Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
322 AM PST Sun Dec 16 2018
A cold front will approach California this afternoon. This cold
front will be responsible for valley rain and mountain snow
tonight and Monday morning. Precipitation should end Monday
afternoon as the cold front moves eastward into the Great Basin.
Dry weather will return to Central California Monday night and
persist through at least Friday.
A cold front will approach the California coastline this
afternoon. This cold front will move onshore tonight, before
progressing eastward through the central part of the state Monday
morning. Wind gusts near 45 mph are possible in the higher
elevations of the Sierra Nevada this afternoon and this evening
well ahead of the cold front. Rain amounts tonight and Monday
morning should vary from under one tenth of an inch in the
southern portion of the San Joaquin Valley to around one half of
an inch in the northern portion of the San Joaquin Valley, with
slightly higher values in the foothills. Ferguson burn scar
flooding is possible tonight and Monday morning. Rain should turn
to snow around 6,000 feet. A Winter Weather Advisory is in effect
for the Sierra Nevada from Yosemite to Kings Canyon from 4 pm this
afternoon through 4 pm Monday afternoon due to total snow
accumulation of up to 9 inches at and above 6,000 feet. A few
thunderstorms are possible from 4 am tonight until about 10 am
Monday morning along the eastern plume of an enhanced region of
atmospheric moisture, which will extend into the northwestern
portion of the San Joaquin Valley.
Precipitation should end Monday afternoon as the aforementioned
cold front progresses eastward into the Great Basin. A ridge of
high pressure aloft will build northward through Southern
California Monday night. An upper-level area of high pressure
will be centered near latitude 30 North, longitude 120 West
Tuesday through Thursday. Tule fog is a distinct possibility
during the late night and early morning hours Tuesday through
Thursday. A weak cold front will progress southward through
Northern California Thursday night. This cold front should pass
through Central California Friday. Atmospheric moisture should be
limited ahead of and along this cold front. A feeble ridge of high
pressure should be located over the west coast of the United
States Friday night and Saturday.
MVFR in haze in the San Joaquin Valley through 18z Sunday. After 00z
Monday MVFR in showers/mist for the SJV and IFR conditions and
mountain obscurations due to low clouds over the Sierra Nevada and
Kern County Mountains. Otherwise...VFR conditions will prevail over
the next 24 hours.
.AIR QUALITY ISSUES...
On Sunday, December 16th, 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.
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
and/or to provide feedback.
Winter Weather Advisory from 4 PM this afternoon to 4 PM PST
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