Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA
FXUS66 KHNX 261042
Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
342 AM PDT Sun Mar 26 2017
.SYNOPSIS...Unsettled conditions will prevail through Monday then
a wamring and drying trend will take place through mid-week.
Another system might bring increased moisture to the area on
.DISCUSSION...The low pressure system which was responsible for
the widespread precipitation across our area on Satruday morning
has moved well to the east of our area and skies cleared out
across our area Satruday evening except for some lingering
upslope low clouds over the east side and south end of the San
Joaquin Valley and the valley facing slopes of the Southern
Sierra Nevada and Tehachapi Mountains. Temperatures are running
about 4 to 8 DEG F below yday where skies have cleared out while
remaining closer to Satruday morning`s readings in locations
impacted by upslope clouds.
Meanwhile, high clouds are already spreading across central
California ahead of the next low pressure system currently off
the PAC NW coast. WV is indicating this system is pulling up a
surge of moisture extending back to near 180W and as the low drops
southeast later today will spread increasing chances of
precipitation across our area by late tonight. This system is
progged to be a quick hitter and the main trough axis will push
through our area on Monday and move east of our area by Monday
Night. Not too much precipitation is expected with this system as
a few tenths of an inches of liquid precipitation are expected in
Yosemite Park with the snow level between 7000 to 7500 feet
tonight lowering to around 6000 feet by Monday afternoon. Up to
two tenths of an inch of rain will be possible in the southern
Sierra foothills and only a few hundredths of an inch of rain are
expected south of Kings Canyon and across the San Joaquin Valley.
The main impact from this system will be a period of windy
conditions Monday afternoon and evening along the west wide of the
San Joaquin Valley and along the ridge tops and below the passes
in the Kern County Mountains and Deserts. Wind gusts to near 50
mph are expected in these areas with locally stronger gusts.
Behind this system shortwave ridging will provide for dry
conditions and a warming trend across our area on Tuesday and
Wednesday. Daytime temperatures are expected to approach seasonal
normals and Tuesday and rise to above normal readings on
The medium range models and their ensemble means are in fairly
good agreement with pushing an upper low into the PAC NW Wednesday
Night then dropping it southeast into the Great Basin on Thursday
as an inside slider. This will bring another period of increased
winds to our area on Thursday and Thursday Night along with cooler
temperatures and chances of precipitation mainly over the
Southern Sierra Nevada. This system is progged to form a closed
low over the Desert Southwest and interact with a building ridge
off the western CONUS coast to keep a cool and dry northerly flow
over our area Friday through next weekend.
.AVIATION...Scattered rain showers are possible at KMER and KMCE
this afternoon into the evening hours. Otherwise...VFR conditions
and light winds expected across all terminals through the
.AIR QUALITY ISSUES...None.
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.