Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA
FXUS66 KHNX 261049
Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
349 AM PDT Wed Apr 26 2017
A slight chance for some mountain showers Wednesday, otherwise
dry weather and seasonable temperatures through the end of the
work week. Breezy conditions will continue through the week.
A strong northwest flow aloft bringing some cirrus clouds across
central CA from upstream moisture with a weather system moving
onshore over the Pacific NW. Area of clouds developing over the
Tehachapis due to the strong wind flow and mid upper level
moisture. Winds remain breezy and gusty below the mountain passes
of the Kern County Mountains due to the strong flow aloft. The
flow over central CA is due to a northeast Pacific ridge and the
broad upper trough in the interior west.
This general synoptic pattern is progged to continue for the next
several days, with a series of shortwave troughs riding across the
pacific ridge. The next weather system will clip our area with a
slight chance for showers over the Sierra zones north of Tulare
county today. QPF is limited and snow levels will remain high, so
no significant impacts from snow are anticipated. There will also
be some upslope clouds and light rain Wednesday night through
Thursday morning in the SJV facing slopes of Kern County. Upper
level winds will increase again this afternoon as the short wave
moves into the great basin. Thus winds should become strong gusty
through and below mountain passes starting early this afternoon
and continue through the evening. The windy pattern will continue
thursday as additional upper level energy follows through the
Great Basin maintaining the strong NW flow across CA.
Models agree on a more significant buckle in the upper jet on
Friday. Limited moisture with this trough will make precipitation
unlikely as this system passes, but it should bring our windiest
period especially for the San Joaquin Valley due to wind flow
becoming more north. Winds turning offshore Saturday as a surface
high builds over the Interior West while the East Pacific ridge
builds inland. This will bring a dry and warm trend for the
Areas of MVFR and local mountain obscuring IFR in low clouds and
showers in the southern Sierra Nevada until 06Z Thursday and in the
Kern County Mountains after 06Z Thursday. Otherwise VFR conditions
will prevail across the central CA interior during the next 24
.AIR QUALITY ISSUES...
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.php for additional information
an/or to provide feedback.
Wind Advisory from 1 PM this afternoon to 5 AM PDT Thursday