Placerville, CA (near 1,850 ft. elevation - 95667)

Wx Discussion - Wx Hazards - Wx Special Statements

Expanded Placerville Weather Forecast

Weather Forecast Discussion

000
FXUS66 KSTO 030930
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
230 AM PDT Mon Aug 3 2020

.SYNOPSIS...
Dry and seasonably hot weather continues across the region today.
Cooling returns Tuesday.

&&

.DISCUSSION...
Clear skies cover the region early this morning. IR difference
imagery shows a lack of stratus along the coast, and profiler data
indicate the marine layer is very very shallow. Winds are
generally light except for a light to moderate Delta Breeze
continuing at Travis AFB. Current temperatures are similar to 24
hours ago over most of the area and range from the 40s in the
colder mountain valleys to the mid 60s to mid 70s across the
Central Valley.

Little change expected in the seasonably hot and dry pattern
today. Highs across the Central Valley will once again be in the
upper 90s to slightly above 100.

Heights aloft forecast to drop slightly beginning Tuesday as weak
closed low pinches off along the northwest California coast, then
lingers Wednesday before another short-wave reinforces the West
Coast trough on Thursday.

Onshore flow is expected to increase Tuesday and Wednesday as the
marine layer deepens, beginning the cooling process inland. Delta
Breeze influenced areas are forecast to be around 10 degrees
cooler Tuesday compared to today, while the north end of valley
won`t see much cooling until Wednesday. May see some stratus work
its way inland into the Sacramento area Wednesday morning.

Thunderstorm chances are expected to remain mostly to the north
and east of the region the next several days, though an isolated
storm or two may be possible late Wednesday across far northwest
Shasta County.

Wildfire smoke possible at times across the region the next few
days, especially north of Sacramento. Onshore flow expected to
bring considerably higher humidity inland by Wednesday and
Thursday.

&&

.EXTENDED DISCUSSION (Friday THROUGH Monday)...
Ensembles indicate upper level trough beginning to break down
over NorCal Friday into the weekend as high pressure builds back
in over the south. This will cause onshore flow to weaken,
temperatures to rise, and humidity to fall for the weekend.
Temperatures Friday will warm slightly around 1 to 5 degrees,
though they will still be near or slightly below normal in the
upper 80s to upper 90s for the valley and upper 60s to upper 80s
for the mountains and foothills. Temperatures rise another 2 to 5
degrees for the weekend and early next week with Valley highs in
the mid 90s to 103 and 70s to 90s in the mountains and foothills.
Although onshore flow will be weaker than midweek, a moderate
Delta Breeze will remain in the nights which will keep morning
lows mild. HEC

&&

.AVIATION...
VFR conditions next 24 hours. Local southwesterly surface wind
gusts 20-30 kts vicinity Carquinez Strait/West Delta, and local
gusts 10-20 kts elsewhere 21Z Monday to 06Z Tuesday.

&&

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

&&

$$

Hazardous Weather Outlook

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