Area Forecast Discussion
Issued by NWS Sacramento, CA

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FXUS66 KSTO 171115
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
315 AM PST Sun Dec 17 2017

.Synopsis...
Breezy north winds will continue in the Sacramento Valley before
decreasing later today. A chance of showers for the region around
mid-week, otherwise dry conditions through the end of next week.

&&

.Discussion...
Other than a few high clouds passing overhead, skies are clear
across the region early this morning. Gusty northerly winds
continue in the Sacramento Valley with local gusts of 35-45 mph
still occurring in the Vacaville and Fairfield area. Easterly
surface gradients have increased compared to 24 hours ago (RNO-SAC
is currently around 9 mbs) resulting in locally gusty winds across
the northern Sierra Nevada and foothills.

Northerly winds will decrease later this afternoon as the upper
ridge builds over the region and surface pressure gradients relax.

A fast moving weather system will brush through the region Tuesday
night into Wednesday and may bring several inches of snow to the
mountains with minimal QPF in the valley. Colder air moving over
the region may keep daytime highs in the 50s for the valley to the
30s for the mountains.

&&

.EXTENDED DISCUSSION (Thursday THROUGH Sunday)
Dry weather returns for late-week behind the exiting trough with
gusty north winds likely to develop through the Central Valley in
its wake.

&&

.AVIATION...
VFR conditions next 24 hours. Northerly wind gusts 20-30 kts will
continue in the Sacramento Valley thru about 00Z Monday.

&&

.STO WATCHES/WARNINGS/ADVISORIES...
Red Flag Warning until 10 AM PST this morning for Carquinez
Strait and Delta-Central Sacramento Valley in Glenn, Colusa,
Yuba, Northern Sutter, and Butte County Below 1000 Ft-Eastern
Mendocino NF-Lake County Portion of Lake-Napa-Sonoma Unit-
Northern San Joaquin Valley in San Joaquin and Stanislaus
Counties Below 1000 ft-Southeast Edge Shasta-Trinity NF and
Western Portions of Tehama-Glenn Unit-Southern Sacramento Valley
in Yolo-Sacramento Far Western Placer, southern Sutter and
Solano County Below 1000 Ft.

&&

$$


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