Area Forecast Discussion
Issued by NWS Sacramento, CA

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FXUS66 KSTO 241046
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
346 AM PDT Mon Apr 24 2017

.SYNOPSIS...
Several weather systems move through bringing cooler temperatures
with some light precipitation through Wednesday.

&&

.DISCUSSION...
Light rain has made it about as far south as I-80 early this
morning as deeper moisture extending across the eastern Pacific
interacts with a weather system pushing into far northern
California. Observed rainfall amounts overnight have ranged from
a few hundredths of an inch in the Sacramento Valley to around a
quarter to half an inch in the foothills and mountains east of
Redding and Red Bluff. Current temperatures are in the 30s and
lower 40s in the mountains with mid 40s to mid 50s elsewhere.

Moisture will continue to stream into the area over the next 24
hours continuing a threat for light precipitation as the front
lingers across NorCal. The Sacramento area may see a few
hundredths of an inch of rain early this morning, but most of the
QPF will remain to the east of the valley over the foothills and
northern Sierra. Scattered showers may redevelop this afternoon.

Snow levels are around 5500-6500 feet early this morning and are
not expected to change much into early Tuesday. Around 2-4 inches
of snowfall accumulation will be possible along the crest of the
northern Sierra with perhaps 6 inches up around the Mt Lassen
area.

Another weather system is forecast to skirt the region later
Tuesday into Wednesday. Most of the precipitation will be over
the mountains north of I-80 but a few showers may affect the north
end of the Sacramento Valley. Snow levels will be high and
accumulating snow is only expected over the tips of the highest
peaks.

Breezy north winds along with warming and drying conditions
commence Thursday.

$$

.EXTENDED DISCUSSION (Friday THROUGH Monday)
High amplitude upper ridging in the EPAC builds inland over
Interior NorCal Friday into the weekend bringing dry weather with
warming temperatures. Gusty northerly wind expected Friday into
Saturday which may require wind advisories. Above normal
temperatures forecast over the weekend with highs climbing into
the lower 80s in the Central Valley Sunday and Monday.

&&

.AVIATION...
Moist Wly flow alf with areas MVFR/IFR poss in pcpn nxt 24 hrs.
LCL LIFR poss omtns with snow lvls 055-070 amsl. Lcl Sly sfc wnd
gsts up to 25 kts poss in Cntrl Vly tda with areas S-SW wnd gsts
35 to 45 kts poss ovr fthls/mtns.

&&

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

&&

$$



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