FXUS66 KHNX 202229
Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
329 PM PDT Mon May 20 2019
A series of storm systems passing through the region will
maintain an unsettled weather pattern over our area into early
next week. Temperatures will slowly warm through the week but will
remain below normal for this time of year.
The most recent storm system continues to swing east away from our
area leaving just some scattered to broken mid and high clouds and
some gusty winds through and below mountain passes in Kern County.
Temperatures are running up a few to several degrees from this
time yesterday, but still will top out much below climo this
Models prog this rather unseasonable synoptic pattern to continue
through the upcoming holiday weekend at least. The next incoming
low pressure system dropping out of the northeast Pacific is on
track to begin impacting northern portions of our area by later
tonight. There will be a slight chance for precipitation spreading
southward mainly over the higher terrain overnight. By Tuesday
afternoon, as instability increases there will be a slight chance
for thunderstorms, including much of the SJ Valley.
This system will not be as wet as the latest system but will
manage to produce several inches of snowfall above 5 to 6 thousand
feet in the Sierra Nevada north of Kings Canyon. A Winter Weather
Advisory has been issued for that area for early Tuesday through
Tuesday night. A Wind Advisory will also be in effect Tuesday
afternoon and evening for the Kern County mountains and desert as
the system kicks up gusty westerly winds.
Wednesday and Thursday will see lingering Sierra shower chances as
energy rotates through the upper low. Another low pressure system
is then progged to drop south through the region and will increase
mountain precip chances and spread into the SJ Valley again. This
will be another drier system and not as expected to bring the
precipitation amounts seen from pour most recent storm system.
Temperatures will trend upward through the week but will remain
below normal. The warmest days will be Friday and Saturday when
highs should top out around 4-8 degrees below climo.
Mainly MVFR conditions with increasing areas of mountain obscuring
IFR along the west slopes and higher elevations of the southern
Sierra Nevada after 06Z Tue and the valley facing slopes and higher
elevations of the Tehachapi mountains after 12Z Tue. In the San
Joaquin Valley, local MVFR ceilings. Otherwise, VFR conditions can
be expected across the central CA interior during the next 24 hours.
.AIR QUALITY ISSUES...
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.html for additional information
an/or to provide feedback.
Winter Weather Advisory from 4 AM to 11 PM PDT Tuesday ABOVE
5000 FEET FOR THE CAZ192.
Wind Advisory from noon Tuesday to midnight PDT Tuesday night
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