Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 090543
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
943 PM PST Thu Dec 8 2016

.SYNOPSIS...
Widespread snow is expected this evening likely producing light
to moderate valley accumulations and heavy mountain accumulations
through Friday. This snowy pattern will is expected to continue
through early next week. Another shot of much colder air is likely
by Tuesday with lows in the single digits.

&&

.DISCUSSION...

Updates to reword some of the zone wording to better address the
varying intensity of snowfall and accumulation of it across
Northeast Washington and North Idaho. Locations further to the
north and east have lower level cold dry air effectively eroding
the incoming bands of snow and resulting in little, if any snow
making it down to the ground...while locations further to the
south and west are not impacted by this dry air and, as such, the
snowbands further to the south and west are maintaining their
structure and snowfall production. This trend is quite evident on
the local radar mosaic as bands of snow that were producing
reasonable quantities of snowfall over extreme Southeast
Washington weaken/erode/shear apart as the move northward.
/Pelatti

&&

.AVIATION...
06Z TAFS: A warm front moving southwest across the aviation area
is weakening as it does so but is still managing to produce light
snow. This same frontal zone will almost clear the northern
portion of Washington but then change course and come back down
and spread more snow over the aviation area after 00Z Saturday.
/Pelatti

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        19  27  24  33  28  33 /  60  50  80  80  70  30
Coeur d`Alene  18  27  24  34  29  34 /  70  40  80  90  90  40
Pullman        22  32  26  34  31  34 /  60  40  80  80  90  40
Lewiston       25  38  30  40  33  40 /  50  50  70  40  70  30
Colville       19  26  24  32  27  33 /  40  40  70  80  50  20
Sandpoint      15  26  25  32  29  33 /  50  40  70  80  80  30
Kellogg        15  29  25  32  28  30 /  80  40  90  90 100  80
Moses Lake     20  28  19  33  22  35 /  40  50  60  50  10  20
Wenatchee      21  24  22  31  26  34 /  70  70  70  50  10  20
Omak           19  24  21  30  23  33 /  60  60  80  50  10  20

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...Winter Storm Watch from Friday afternoon through late Sunday
     night for Central Panhandle Mountains.

     Winter Weather Advisory until 10 AM PST Friday for Idaho Palouse-
     Lewiston Area.

WA...Winter Weather Advisory until 10 AM PST Friday for Lower
     Garfield and Asotin Counties-Washington Palouse-Waterville
     Plateau-Wenatchee Area.

     Winter Weather Advisory until 4 PM PST Saturday for East Slopes
     Northern Cascades.

&&

$$



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