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Area forecast discussion 
National Weather Service Spokane Washington
1234 PM PST sun Dec 28 2014

Synopsis...
snow showers over north Idaho will bring additional accumulations
to the high terrain of the central and southern Panhandle today.
Bitterly cold northeast winds will develop Monday morning and
continue into Monday night. Temperatures will be well below
average with dry conditions most of next week as Arctic high
pressure settles over the inland northwest.



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Discussion...
a quick update to raise high temperatures for today. Many
locations have already achieved or are closing in on their high
temperature. Lewiston, Moses Lake, Ephrata, Wenatchee and Omak all
have overachieved their high temperature from what was in the
previous forecast. These areas are all seeing temperatures topping
out in the upper 30s to lower 40s with some sun breaks being
observed across the basin and up into the Okanogan Vly/Highlands.
/Svh



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Aviation...
18z tafs: morning IFR and LIFR conditions at the kgeg...ksff and
kpuw taf sites will gradually improve as a cold unstable air mass
promotes mixing in the lower levels but also creates the
possibility of brief MVFR conditions in passing snow showers
particularly at the kpuw and kcoe taf sites and possibly the kmwh
taf site...but the scattered nature of these showers makes
confidence that any particular location will get hit only low to
moderate. Snow showers will be concentrated over the Idaho
Panhandle mountains today. After 06z, an Arctic cold front will
surge southward bringing increasing north/ northeast winds and the
potential for a period of light snow with the front. The easterly
upslope component of the low level wind may produce some light
runway accumulations at Wenatchee toward sunrise on Monday. /Mjf



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Preliminary point temps/pops...
Spokane 31 18 21 5 14 1 / 10 50 10 0 0 0
Coeur D'Alene 32 17 20 1 14 0 / 30 60 10 0 0 0
Pullman 35 19 23 2 12 -1 / 20 50 40 10 0 0
Lewiston 42 24 29 7 17 6 / 30 60 50 10 0 0
Colville 35 20 24 2 18 -1 / 20 50 10 0 0 0
Sandpoint 34 18 20 0 13 -2 / 60 50 10 10 0 0
Kellogg 32 15 17 -4 9 -5 / 80 70 10 10 0 0
Moses Lake 39 23 29 11 22 3 / 10 50 20 10 0 0
Wenatchee 39 25 30 12 23 8 / 10 70 60 10 0 0
Omak 39 21 26 6 17 3 / 10 60 20 0 0 0

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Otx watches/warnings/advisories...
Idaho...Winter Storm Warning until 4 PM PST this afternoon for central
Panhandle mountains.

Winter Weather Advisory until 4 PM PST this afternoon for Lewis
and southern Nez Perce counties.

Washington...none.

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