Area Forecast Discussion
Issued by NWS Sacramento, CA

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FXUS66 KSTO 281628

928 AM PDT Tue Oct 28 2014

Continued mild weather through Thursday. A frontal system will
impact northern interior California Friday (Halloween) and
Saturday with rain and snow and cooler daytime temperatures. Snow levels will
lower to around 4000 ft Saturday morning. Drier and warmer weather early
next week.


Chilly morning with temperatures in the 40s in the Valley and
generally 20s and 30s in the mountains under mainly clear skies.
These temperatures are near to a few degrees below normal for this
time of year. Temperatures will warm up into the 70s in the Valley
and mid 50s to 60s this afternoon with sunny skies under a weak
ridge of high pressure. These temperatures are near to a little
above normal for this time of year. Temperatures will warm up a
little more on Wednesday with highs in the upper 70s to low 80s in
the Valley and upper 50s to low 70s in the mountains. There is a
slight chance of showers for Western Shasta County as system move
by to the north tonight, otherwise dry through early Thursday. A
colder and wet storm comes in late Thursday into Friday
(Halloween) spreading precipitation across interior Northern
California. Showers will continue Friday night and Saturday as
upper level trough moves over the area. Gusty Southerly winds are
expected on Friday as the front moves into the area. Valley
precipitation amounts may be around 0.20 inches to half an inch
and one to two inches in the Sierra and Shasta County mountains. Snow
levels will start out around 7000 to 8000 ft Friday morning and
lower to around 4000 ft Saturday morning. This will bring winter
driving conditions and possible travel delays over the Sierra
Friday and Saturday.Trough shifts east Sunday with ridging
forecast to return into early next week leading to a return of dry
northwesterly flow for much of interior NorCal and a retreat of
precipitation chances to around the Oregon border.



Flat high pressure over west coast will bring VFR conditions next
24 hours. Winds generally below 10 knots.


.STO Watches/Warnings/Advisories...

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