Scientific Forecaster Discussion
fxus66 khnx 261203
Area forecast discussion
National Weather Service San Joaquin Valley - Hanford California
503 am PDT Mon Jun 26 2017
temperatures will begin trending cooler this week along with dry
conditions. Coastal pass and Kern County mountain passes and
desert areas could see breezy to gusty winds the next several
satellite loops show a weak upper low near 40n/128w lifting
northeast toward the Pacific northwest this morning. This incoming
trough is weakening and displacing the ridge that extends
northward across Southern California. Fort Ord profiler shows
significant elevating of the marine layer to around 3000 ft as the
trough approaches. A break in our heatwave is underway as a result
of the approaching trough.
Current 24 hr temperature trends across our area are running
mostly down, as much as 4-8 degrees. Thanks to the passing low
pressure system and an influx of some of that cooler marine air,
we will see temperatures down several degrees today and lowering
further to around climo or even slightly below by Tuesday.
The general synoptic pattern is progged to persist through the
the week, with additional shortwave energy tracking across the
top of the ridge and keeping temperatures generally within a few
degrees of normal. Models remain in reasonable agreement through
the week and show a slightly deeper trough dropping through the
region during the weekend. So,for the upcoming week and weekend,
we can look forward to temperatures as much as 15 to 20 degrees
lower than those we've been experiencing during this heatwave.
There are no significant chances for precipitation throughout the
period as moisture is limited.
Winds will be occasionally gusty with the passing systems,
especially through and below mountain passes. Waterways will
continue to run cold, deep, fast and dangerous as they continue
to be fed by melting snow.
VFR conditions will prevail across the central California 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.Php for additional information
an/or to provide feedback.