160
FXUS66 KSTO 022049
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
1249 PM PST Tue Dec 2 2025


.KEY MESSAGES...

 - Periods of clouds, mist, or fog continue in the Central Valley
   for the next few mornings.

 - Breezy north to east winds Wednesday into Thursday, strongest
   in the western Valley and Delta.

 - Weak system brushes by the area this weekend, bringing the
   chance for showers across Shasta County. Dry weather continues
   elsewhere for the foreseeable future.

&&

.DISCUSSION...

...Tonight - Wednesday...
Morning fog and stratus have begin to break up early this
afternoon again. Latest hi-res guidance attempts to clear out the
entire Sac and northern San Joaquin valleys by this evening
before sunset. We anticipate another round of patchy fog/low
stratus Wednesday morning with best chances Sacramento southward
and still breaking up during late morning, early afternoon hours.

Chances lower north of Sacramento due to increasing north winds in
the Valley set to develop after around midnight tonight that may
keep the worst of the fog from developing. By 4 AM tomorrow, we
can expect north gusts 20 to 30 mph along the west side of the
Valley along I-5 and have those winds persist into the early
afternoon before tapering off Wednesday night. The Delta region
can expect slightly higher winds closer to 25 to 35 mph with
strongest winds early Wednesday morning. NBM probabilities for
Wednesday show a 40-70% chance of winds greater than 35 mph for
the western portions of Solano, Yolo, and Colusa counties. Lastly
east wind gusts over the Sierra are expected on Wednesday with
gusts up to 30 to 40 mph and strongest Wednesday late morning.

...Thursday - Saturday...
After the quasi-inside slider pattern leaves the area on Thursday,
mild and dry conditions prevail with seasonable temperatures and
foggy/low stratus mornings. Ridging looks to hold along the CA
Coast that keeps the forecast muted from much active weather.
A weak shortwave on Saturday slides from the Pacific NW eastward
that will give a nonzero chance of rain over northern Shasta
County with amounts up to a quarter inch but no impacts are
expected at this time.

...Sunday - Early Next Week...
Dry weather continues late this weekend into early next week. The
next hint at a potential pattern change comes by the following
weekend but we`ll see how that develops over the next week or so.

&&


.AVIATION...

Gradually improving ceilings and visibility across the Central
Valley are expected this afternoon and evening, with conditions
back to VFR. Some BF/FG and low stratus for most sites return
tonight after 08Z-14Z with a potential for period of IFR/LIFR
cigs and patchy fog, especially from Sacramento southward.
Northerly winds should limit fog formation to the north in the
Valley. Sustained winds with gusts to 20 to 25 kt are possible
11-18Z Wednesday for the northern Sacramento Valley and to 30kt
for the Sierra, generally less than 10 kts for TAF sites elsewhere
through Wednesday afternoon.

&&

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

$$