Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 261750
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
950 AM PST FRI DEC 26 2014

.SYNOPSIS...
A vigorous low pressure system will produce widespread
accumulating snow Saturday into Sunday. The heaviest snow
amounts will likely occur over the Idaho Panhandle where amounts
of 5 to 9 inches will be a good bet by Sunday morning. Bitterly
cold northeast winds will develop by Monday morning. Temperatures
will be well below average most of next week as arctic high
pressure settles over the Inland Northwest.

&&

.DISCUSSION...
Rest of today...relatively quiet and benign but seasonably cool
conditions will prevail today ahead of the next winter storm due
into the area Saturday and Sunday. Stubborn fog and low clouds are
the issue for today with satellite and web cams indicating the
Spokane metro area and much of northern Idaho blanketed by fog
and stratus and trends suggesting it will be slow to clear
today...but morning sounding suggests some dry air just above the
inversion layer which should promote erosion this afternoon if the
anemic winter sun can weaken the nocturnal inversion. This may be
a dim prospect though. Otherwise generally sunny and cool
conditions expected throughout the region outside of fog bound
areas of the northeast and a few lingering snow showers over the
Idaho Panhandle mountains.

&&

.AVIATION...
18Z TAFS: Low stratus and fog will be problematic for Coeur
D`Alene, Spokane, Sandpoint, and Colville today. morning satellite
indicates the northeast washington valleys and the
Spokane/Coeur d`Alene area choked with stratus. This field of IFR
ceilings will be very slow to clear today...and may only clear out
along the margins due to low sun angle. The KGEG TAF site lays on
the very edge of this stratus layer but there are indications
from satellite and nearby web-cams that fog and stratus may
envelop the TAF site between 18Z and 20Z before dissipating in
the afternoon. Tonight stratus layers will likely return and by
18Z Saturday the next pacific storm system will overspread -SN to
mist TAF sites for general IFR conditions developing between 15Z
and 18Z. /MJF



&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        34  25  32  27  31  18 /   0  20 100  90  60  40
Coeur d`Alene  33  24  31  27  31  17 /   0  20 100 100  60  40
Pullman        35  25  33  28  30  15 /   0  10 100  90  80  50
Lewiston       39  26  37  32  36  24 /   0  10  50  90  70  50
Colville       33  23  32  25  32  19 /   0  30  90  90  50  30
Sandpoint      32  24  31  26  31  17 /   0  30 100 100  60  20
Kellogg        31  23  30  25  30  15 /  10  20 100 100  80  40
Moses Lake     41  24  36  26  36  25 /   0  10  30  20  20  20
Wenatchee      41  25  39  26  35  26 /   0  10  20  30  10  30
Omak           35  22  30  23  30  20 /   0  10  20  50  30  30

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...Winter Storm Watch from late tonight through Sunday morning for
     Central Panhandle Mountains-Coeur d`Alene Area-Idaho
     Palouse-Northern Panhandle.

WA...None.
&&

$$



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