000
FXUS66 KSTO 181031
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
331 AM PDT Thu Jul 18 2019

.SYNOPSIS...
Slight cooling the rest of this week, followed by a slight warm
up early next week. Breezy winds through the Delta and over the
Sierra crest at times.

&&

.DISCUSSION...
Other than a few high clouds, skies are clear across interior
NorCal early this morning. Current temperatures are milder
compared to 24 hours ago and generally range from the mid and
upper 40s in the mountain valleys to the 60s to mid 70s elsewhere.

Not much change in the overall pattern as a weak trough lingers
along the West Coast into the weekend. Therefore, dry conditions
and seasonably hot temperatures will continue. Temperatures in
the Delta Breeze influenced areas will vary slightly day-to-day
depending on the depth of the marine layer and strength of onshore
flow.

&&

.EXTENDED DISCUSSION (Monday THROUGH Thursday)...
Monday will see a continued amplification of the large high
pressure ridge over the Great Basin. With main ridge axis and
subsidence well east of the CWA, daytime highs for the start of
the extended period will remain near normal. Operational GFS still
throwing in some evening convection over the Sierra with a
slightly more southerly flow aloft while GEFS members imply a more
southwest flow which keeps moisture east of the CWA. Situation
bears watching but still keeping forecast dry. Little change is
anticipated through the remainder of the extended. A small scale
shortwave trough is progged to nudge the Great Basin ridge as it
pushes northeast through the the Pacific northwest on Wednesday.
This will cool temperatures just slightly but otherwise have
minimal impact. Temperatures bump back up to near or a little
above normal on Thursday. In short, extended forecast remains dry
with near normal temperatures and generally light winds except for
occasionally breezy conditions over the Sierra crest and Delta
region.

&&

.AVIATION...
VFR conditions next 24 hours. Southwest wind gusts 25-35 kts
vicinity Delta; otherwise, sustained winds generally below 15
knots.

&&

.STO WATCHES/WARNINGS/ADVISORIES...None.

&&

$$