Area Forecast Discussion
Issued by NWS Sacramento, CA

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FXUS66 KSTO 021700
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
900 AM PST TUE FEB 2 2016

.Synopsis...
Two weak weather systems will move through the region this week,
the first today and the second on Wednesday. An extended period of
dry weather will then commence continuing into next week.

&&

.Discussion...
Cold shortwave trough is now moving through Northern California
with a NW to SE trajectory. Fairly low snow levels have been
reported today, with accumulations of near 2 inches along
Interstate 5 at Sims (1500 ft), and a dusting down to 1600 feet in
Auburn. The main band of showers will be moving through this
morning, and a few showers may linger into the afternoon.
Precipitation totals will mainly be light.

The next low pressure system will be quick on its heels, moving
through NorCal midday Wednesday through Wednesday night. This next
system is forecast to be a bit wetter than today`s, but not by
much as it too will be weakened by the eastern Pacific ridge.
Snow levels should rise to above 2000 ft in Shasta County and
3000-4500 ft along the Sierra. Slowly rising snow levels and a
weakening system will limit the degree of impact.

High pressure will begin to build into California more strongly
late this week into the weekend. The surface pressure gradient
tightens a bit Thursday and Friday, likely leading to locally
breezy north winds. Current guidance suggests these winds won`t be
as strong as we experienced earlier this week.

Dang

&&
.EXTENDED DISCUSSION (Saturday THROUGH Tuesday)

Extended period characterized by ridging. A weak system attempts
to break down the ridge on Saturday, but barely threatens only
far northern Shasta county. Then high pressure sits overhead
through early next week with much of the valley into the upper
60s to low 70s and 50s/60s in the mountains.     JClapp
&&

.AVIATION...

A weak system will continue to move through the area this morning
with scattered showers through around 20-22z today with snow
levels down to around 1500 feet. Mainly VFR conditions expected
through the period with light winds.


&&

.STO Watches/Warnings/Advisories...
None.
&&

$$


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