FXUS66 KHNX 171029
Area Forecast Discussion
National Weather Service Hanford CA
329 AM PDT Wed Jul 17 2019
.SYNOPSIS...Dry weather will continue through the end of the
week and the upcoming weekend, with temperatures remaining at or
slightly below normal. Temperatures will then trend upward early
.DISCUSSION...The west coast upper level low pressure trough
continues to provide cooler conditions in central CA, with some
ocean cooled influence in the SJ Valley as the marine layer has
risen to around 2500 ft and moderate onshore surface pressure
gradients persist. 24 hr temperature trends are currently running
mostly down around a degree or so. Other than some passing patches
of high clouds, skies are generally clear across the area.
Highs across the area yesterday topped out mostly a couple of
degrees below normal and should be similar today under the
influence of the low pressure trough. The trough is progged to
lift to the north through Thursday and highs Thursday are expected
to rise just slightly to right around climo.
Models deepen the trough again Friday and Saturday as a weak
shortwave impulse tracks inland. This will bring another round of
moderate wind gusts as temperatures drop back to a few degrees
Model agreement continues through early next week as high pressure
building over the Four Corners region expands westward.
Temperatureswill trend upward from around seasonal norms Sunday
to a few degrees above by the middle of the week. This will mean a
return of triple digit highs to most SJ Valley and desert
This pattern will be for the most part a dry one, however models
suggest the expanding high pressure ridge could shunt some
moisture west toward our region. This could bring a chance for
showers and some thunderstorms over the Sierra zones by the middle
of next week.
.AVIATION...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 high.
The level of certainty for days 3 through 7 is high.
Certainty levels include low...medium...and high. Please visit
www.weather.gov/hnx/certainty.html for additional information
an/or to provide feedback.
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