Area Forecast Discussion
Issued by NWS Sacramento, CA

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FXUS66 KSTO 232330
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
330 PM PST Thu Feb 23 2017



.Synopsis...
Flooding concerns continue as runoff from the recent rain
continues to work its way downstream adding stress to waterways. A
couple of weak but cold storms move through Monday. An extended
period of dry weather starts the middle of next week.

&&

.Discussion...
Disturbance passing southeast through northern California will
keep a few showers into the evening mainly over the mountains.
Some small hail is possible. A brief period of heavy snow may pass
over the Sierra from interstate 80 south into Tuolumne county
through 6 pm with up to 3 inches of snow. Patchy frost with valley
temps from low to mid 30`s overnight...especially north Sac
valley. Do not expect widespread sub-freezing temps...but a few
low spots could be below freezing for a few hours.

Northwest flow behind broad upper trough over Rockies will prevail
over NorCal with weak disturbances dropping southeast through the
weekend. This will keep a few showers over the mountains...but
generally dry for the valleys Friday.

System dropping south Saturday continues to trend weaker. The
system is now forecasted to produce less than 0.50 inches
mountains and a few inches of Snow. Sunday still offers better low
snow potential with snow levels down to 1000 feet. north wind
drainage may set up over Shasta county with a few inches possible
in Redding.

&&
.EXTENDED DISCUSSION (Monday THROUGH Thursday)

Large upper level trof will continue to influence the area Monday
into Tuesday with showers, generally over the mountains. Snow
levels will remain fairly low in the 1500-2500 foot range but
additional accumulations will remain light. May be enough to cause
a few travel headaches though especially for those who are
unaccustomed to low elevation snow. Upper level ridge then builds
in for Wednesday into the end of the week with dry weather and
warming temperatures. CEO

&&

.AVIATION...

VFR conditions for TAF sites over net 24 hours with generally
light northerly to variable flow. A few showers over the western
slope of the Sierra through this evening.

&&

.STO WATCHES/WARNINGS/ADVISORIES...
Flash Flood Watch through Saturday morning for Carquinez Strait
and Delta.

&&

$$



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