Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA
FXUS66 KHNX 272105
Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
205 PM PDT Mon Mar 27 2017
.SYNOPSIS...High pressure will build over the region tonight
through Wednesday before another fast moving a potentially windy
storm system drops into the Great Basin on Thursday and Friday.
.DISCUSSION...Northwest flow continues over the region with
strong and gusty winds over the Kern County Mountains and desert
and to a lesser degree the west side of the San Joaquin Valley.
Gusts thus far have been as high as 64 mph at Cache Creek Weigh
station on Highway 58 and 57 mph at California City. Current
surface pressure gradient is 9.4 millibars between Bakersfield and
China Lake and 16 mb from San Francisco and Las Vegas. Latest HRRR
model keeps gusts to over 45 knots going in the desert through
around 8 pm, thus the advisory and high wind warning will remain
in place. Winds subside quickly overnight per the same model.
Given the continued northwest flow into the Grapevine area, pops
will remain in place for upslope drizzle or light rain mainly
along San Joaquin Valley facing slopes through the evening.
Models are in good agreement in building a ridge over the region
Tuesday and Wednesday for a warming and drying trend along with
much lighter winds. The flow will become easterly over the Kern
County with some light offshore or pseudo Santa Ana winds over
the Tehachapi`s. The next system is progged to push southeast into
the Great Basin Thursday afternoon and evening bringing a
returned threat of strong winds over the Kern County mountains and
desert and some quick hitting light precipitation in the Sierra.
More ridging follows for the weekend with models bringing a very
similar tracked low into the region on Monday. All in all a roller
coaster ridge of fast moving lows and ridges.
In the San Joaquin Valley and Grapevine region widespread mvfr
and local ifr in clouds and drizzle along south end of valley
through 12z otherwise VFR over entire area through 00z Wednesday.
Gusty winds to 50kts possible over Kern County mountain passes and
desert through 06z.
.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.
High Wind Warning until 11 PM PDT this evening CAZ095-098-099.
Wind Advisory until 8 PM PDT this evening CAZ089>091.