Weather Service Report


670 
FXUS66 KHNX 302322
AFDHNX

Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
422 PM PDT TUE AUG 30 2016

.UPDATE...UPDATED AIR QUALITY ISSUES.

&&

.SYNOPSIS...
Dry weather and a slight cool down over the central California
interior for the next several days.

&&

.DISCUSSION...
Other than wildfire smoke over some locales at times, mostly
clear skies will prevail. Also, temperatures will remain near
average through Thursday, but will become noticeably cooler by
Friday and into Labor Day weekend as an upper-level trough of low
pressure sets up along the West Coast.

Locally gusty winds are expected at times on Friday through
Sunday during the afternoon and evening through and below the
mountain passes, especially along the west side of the San Joaquin
Valley and in eastern Kern County. In addition to an elevating
marine layer, which will spill cool air into the San Joaquin
Valley for Friday and much of Labor Day weekend, the upper-level
trough will also provide some synoptic cooling across the much of
the central California interior. Thus, temperatures will fall back
to around 3-6 degrees below seasonal normals by the end of the
week and remain similar through at least Sunday. Slight model
discrepancies continue for the period during early next week, or
by Labor Day, as the trough is progged to slowly lift out.
Although, models show general agreement in terms of a slight
rebound in temperatures, but still remaining close to average for
early September.

Expect dry conditions through next Tuesday as models are in good
overall agreement in showing no significant moisture influxes.
Overall confidence is high regarding the setup of the low pressure
trough and temperatures trending down by the end of the week, but
medium for Labor Day and beyond.

&&

.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...
On Wednesday August 31 2016... Unhealthy for sensitive groups in
Fresno... Kern and Tulare Counties and Sequoia National Park and
Forest.
Further information is available at Valleyair.org

&&

.CERTAINTY...

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.

&&

.HNX Watches/Warnings/Advisories...
NONE.
&&

$$

public...BSO
avn/fw...DS
synopsis...WP

weather.gov/hanford

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Western Regional Climate Center, wrcc@dri.edu