Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA

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FXUS66 KHNX 180813

Area Forecast Discussion
National Weather Service Hanford CA
113 AM PDT Thu Jul 18 2019

.SYNOPSIS...High temperatures will fluctuate through the mid to
upper 90`s for the next few days across the San Joaquin Valley,
before a warming trend begins early next week that will take us into
the low 100`s. There will be a chance for precip along the Kern
County Mountains and Sierra Nevada next week as monsoonal moisture
tries to make its way west.


High temperatures yesterday were a couple degrees below average
for the most part across the SJ Valley, with highs generally
ranging from 93-98 degrees. Today may be a couple degrees warmer,
with highs mainly in the 95-99 degree range across the valley.
Slightly cooler for Friday and Saturday -- back to the 93-98
degree range -- as we get minor 500 mb height falls due to an
upper level trough moving through the Pacific Northwest. By
Sunday, models are indicating a strengthening in the upper level
ridge in the four corners area, which will also provide us with
some additional warming -- mainly into the upper 90`s in the
valley and low to mid 100`s for the desert.

This ridge of high pressure is forecast to strengthen and move
northwest by next Tuesday. This does a couple of things for us in
Central California. One, it will increase afternoon highs into
the low 100`s across the SJ Valley, and two, it will change the
flow pattern aloft by early next week. This shift in the flow
pattern aloft may allow for tropical moisture to pivot around the
ridge and enter our forecast area. This would enable a daily
chance of afternoon showers and thunderstorms along the Sierra
Nevada as well as the Kern County Mountains starting Tuesday
through at least the end of the forecast period (Thursday). This
set up may also allow for a storm or two to occur in the Mojave
Desert during the aforementioned time frames as well.


.AVIATION...VFR conditions can be expected across the central
CA interior during the next 24 hours.





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 for additional information
an/or to provide feedback.




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