Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 100545
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
945 PM PST Fri Dec 9 2016

.SYNOPSIS...
Periods of light snow will continue through the weekend and into
early next week. Brisk dry north winds are expected Monday down
the Okanogan Valley the will spread out over the western basin.
Temperatures will become very cold by Tuesday and will continue
through next week. Many areas will see overnight temperatures fall
into the single digits with some locations seeing temperatures
below zero for early to mid week.

&&

.DISCUSSION...

Updates this evening included cleaning up the ongoing winter
weather advisories to remove old afternoon wording and snow
amounts associated with it. Will update zones this evening and
make some minor adjustments to the pops but nothing too
substantial as the short term models have reasonable continuity in
depicting the expected snowfall for tonight associated with the
warm front/isentropic ascent moving through the region. Will also
extend the minor mention of freezing rain and ice pellets for
locations primarily south of the Moscow/Pullman area down to
Lewiston/Clarkston area as the ongoing warm southwest flow will
warm some portion of the atmosphere aloft in that area above
freezing for as spell overnight and into Saturday morning.
/Pelatti

&&

.AVIATION...
06Z TAFS: Bands of precipitation moving in from the southwest will
bring snow to the aviation are tonight and tomorrow. With the more
intense snowfall ceilings and visibilities are likely to be in
the IFR category. Since this air is arriving from a warm
trajectory and overrunning the cold air below it there is the
potential for locations furthest south such as KPUW and KLWS to
have some freezing rain tonight and tomorrow morning. /Pelatti

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        21  30  28  34  24  27 /  80  20  80  40  50  40
Coeur d`Alene  19  31  28  35  25  29 /  90  70  80  70  50  40
Pullman        27  32  29  35  28  30 /  80  70  80  70  70  60
Lewiston       28  37  31  40  29  34 /  70  30  60  50  50  40
Colville       21  32  28  35  23  29 /  90  30  70  30  20  10
Sandpoint      18  31  29  34  27  29 /  90  60  80  60  30  30
Kellogg        21  30  28  32  26  28 /  90  90 100  90  90  70
Moses Lake     20  30  25  35  22  28 /  60  10  30  10  10  30
Wenatchee      21  30  26  34  26  30 /  60  10  30  10  10  30
Omak           19  29  25  33  21  26 /  70  20  60  10  10  10

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...Winter Weather Advisory until 10 AM PST Saturday for Central
     Panhandle Mountains-Northern Panhandle.

     Winter Weather Advisory until 4 AM PST Saturday for Coeur
     d`Alene Area-Idaho Palouse.

WA...Winter Weather Advisory until 10 AM PST Saturday for Northeast
     Mountains.

     Winter Weather Advisory until 4 AM PST Saturday for Okanogan
     Highlands-Spokane Area-Washington Palouse.

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

&&

$$



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