Scientific Forecaster Discussion
fxus66 khnx 202246
Area forecast discussion
National Weather Service San Joaquin Valley - Hanford California
346 PM PDT Fri Oct 20 2017
Synopsis...high pressure will build over the region behind a
storm system moving out of the area tonight. This will bring dry
conditions and warming temperatures through the weekend and into
the middle of next week.
Discussion...central California is on the backside of the
frontal trough which moved through overnight and during the
morning. As much as 1/2 to 3/4 of an inch of precip has fallen
in the Yosemite area with a few tenths in the foothills and
generally a few hundredths in the sjv. Snow levels remained
relatively high, with a couple of inches likely accumulated at
the highest elevations of the Sierra north of Kings Canyon.
Desert areas have received little to no precipitation but windy
conditions continue behind the trough.
As the trough continues to pull away to the east, winds will
diminish after this evening and overnight low temperatures will
fall to around 10 degrees below climo across the region. Models
continue to look very similar with the evolving synoptic pattern
over the next several days. A strong ridge is progged to build
northward across the West Coast through the weekend and into early
next week. This will bring dry conditions with warming temperatures.
By Monday, temperatures return to slightly above normal and
warming a few more degrees through midweek.
Another developing trough is progged to drop through the pac northwest
and take more of an inside slider trajectory for the latter half
of the week. This looks like a continued dry pattern, with slight
cooling as the high is displaced and a more northerly flow
develops over the region.
wind gusts of 40-50 kts will likely continue over the Sierra Nevada
crest and in the Kern County mountain areas through 06z Saturday.
Otherwise, expect VFR conditions through the next 24 hours in the
central California interior.
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.
Wind Advisory until 11 PM PDT this evening caz095-098-099.