Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA
FXUS66 KHNX 292130
Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
230 PM PDT Wed Mar 29 2017
A fast moving and potentially windy storm system drops into the
Great Basin on Thursday and Thursday night. A best, spotty
showers will also be observed during storm passage. High pressure
will return for more springlike conditions for the weekend.
Upper level ridge over the West Coast today provided for sunny
conditions and warm temperatures. While snow cover continues to
keep some of the higher elevations of the Sierra Nevada on the
cool side, Valley temperatures were able to reach into the lower
70s. Furthermore, winds continue to remain light across the region
ahead of another storm currently pushing through the Pacific
Northwest. Current timing has this next storm moving closer to the
district late overnight into early Thursday morning.
Change will usher into the district late overnight as short range
meso-scale models prog a return to unsettled conditions on
Thursday. Precipitation is expected, mainly over the mountains
north of Kern County, and across the northern portions of the San
Joaquin Valley on Thursday. In addition, the best chances of
precipitation will exist over the higher terrain, with minimal
accumulation expected. The big concern with this next storm system
is in the field of wind. A strong temperature gradient from north
to south along with a plus 130 knot jet max over Central
California on Thursday will support strong surface winds during
the day. A wind advisory is currently in effect as winds are
expected to gusts in the excess of 50 mph across the Kern County
mountains and deserts.
The next storm will begin to exit the region on Friday as it
pushing into the Four Corners area. While lingering cyclonic flow
will keep the district unsettled, the potential for precipitation
will diminish on Friday. Ridging will not exist over the region
until Saturday as a weak short-wave ridge crosses the region. The
transitory ridge will allow another trof to enter the region
early next week. While more uncertainty exist with the second
storm system, clouds and winds could reach the Central California
Interior on around Monday. Higher confidence level exist with the
timing of this storm then with the amplitude. Because of the
higher confidence in timing, will expect another ridge pattern
over the region toward the middle of next week.
VFR conditions are expected across the Central CA Interior for
the next 12 hours. Possible Mountain MVFR and local IFR conditions
may be observed after 12Z Thursday, north of Kern County. Strong
winds may develop after 18Z Thursday, especially over the Kern
County Mountains and Deserts.
.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 Noon to 11 PM PDT on Thursday CAZ095-098-099.