Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA
FXUS66 KHNX 292045
Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
145 PM PDT MON AUG 29 2016
.SYNOPSIS...Dry weather and near normal temperatures will prevail
over the central California interior for the next several days.
.DISCUSSION...Upper level ridging prevailing over our area today
keeping skies mostly clear and continuing the ongoing warming
trend with temperatures running 2-4 deg F above yday at most
locations. Meanwhile, IR, WV and GOES high density winds are
indicating some upper level tropical moisture streaming into
norcal from the southwest. The 12Z WRF is indicating an upper
level shortwave will push into norcal early Tuesday and break down
the upper ridge. This will result in increased winds below the
passes in the Kern County mountains and deserts tonight as p-grads
strengthen and will also bring slightly cooler daytime
temperatures on Tuesday to the San Joaquin Valley as marine
cooled air spills in. Some high clouds might stream across the
northern portions of our area, but precipitation is not expected
as RH progs are indicating the lower and mid levels remaining dry
across our area.
An upper trough is progged to become established off the western
Conus coast on Wednesday. This will bring synoptic cooling to our
area for the remainder of the week while a dry southwest flow
aloft prevails. Breezy to windy conditions will be possible below
the coastal passes as well as below the Kern County mountain and
The medium range models are in fairly good agreement with
indicating the upper trough pushing inland through the PAC NW on
Saturday then into the Great Basin by Sunday while an upper ridge
amplifies near 140W. Interaction between the eastward moving
trough to our north and the amplifying offshore ridge will produce
a dry northwest flow aloft across central CA over the holiday
weekend resulting in near normal temperatures and keeping our area
free of precipitation.
.AVIATION...Smoke from wildfires will reduce visibilities to MVFR
in some areas. Otherwise, VFR conditions will prevail over the
central CA interior during the next 24 hours.
.AIR QUALITY ISSUES...please see SFOAQAHNX
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.