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fxus66 kotx 221826 
afdotx

Area forecast discussion
National Weather Service Spokane Washington
1026 am PST Mon Jan 22 2018

Synopsis...
an active weather pattern is expected through the week. A wet and
mild weather system will bring significant precipitation Tuesday
night into Wednesday and again next weekend with a mix of rain and
snow across the lower elevations and snow in the mountains.
Travel impacts are expected at times, especially over the mountain
passes.



&&

Discussion...
as of 10 am, scattered light radar returns were being detected
around Priest Lake and Bonners Ferry. More scattered rain and
snow shower activity is expected to develop by early this
afternoon under a passing cold upper trough. Lowland
precipitation amounts should be relatively light, and with
temperatures in the mid 30s to low 40s snow accumulations are not
expected. There will likely be enough westerly upslope into the
Idaho Panhandle mountains this afternoon and early this evening
for a couple inches of accumulation for the high elevations around
Kellogg, Clark Fork, and Sandpoint.

The morning model runs continue to forecast a moisture rich storm
system for Tuesday into Wednesday. Heavy mountain snow
accumulations will occur over a two day period. Lowland snow
amounts will be a challenge with rising snow levels. At this time,
it looks like communities along and north of Highway 2 will have a
shot of snow accumulations on Tue/Tue evening before a change to
rain. Communities closer to the Canadian border like Colville,
Metaline Falls, Sandpoint, and Bonners Ferry may experience snow
into Wednesday with accumulations of 4 to 6 inches. /Gkoch

&&

Aviation...
18z tafs: scattered rain and snow showers will be possible in the
19z-22z time frame for the kgeg, ksff, kcoe, and kpuw airports
under a passing cold upper trough. Amounts will be light and with
temperatures above freezing, runway accumulations are not expected
today. Low stratus or fog will likely develop overnight with a
favorable SW flow into Spokane and Coeur D'Alene. Look for snow to
develop over central Washington between 15-18z including
Wenatchee, Chelan, and Omak. /Gkoch

&&

Preliminary point temps/pops...
Spokane 37 29 36 35 40 30 / 70 10 50 100 80 70
Coeur D'Alene 37 29 35 34 39 30 / 70 20 40 100 90 80
Pullman 39 30 37 36 42 32 / 50 20 20 80 80 70
Lewiston 45 33 42 41 47 35 / 20 10 20 60 70 60
Colville 37 27 34 33 38 29 / 40 10 70 100 90 90
Sandpoint 36 27 34 33 37 29 / 60 40 50 100 90 90
Kellogg 36 28 35 34 37 29 / 80 40 20 90 80 80
Moses Lake 43 29 39 37 44 31 / 10 0 70 90 60 20
Wenatchee 41 28 35 33 38 28 / 10 0 90 90 70 30
Omak 37 28 34 33 36 28 / 10 0 100 100 90 50

&&

Otx watches/warnings/advisories...
Idaho...Winter Storm Watch from Tuesday morning through Wednesday
morning for northern Panhandle.

Washington...Winter Storm Watch from Tuesday morning through Wednesday
morning for east slopes northern Cascades-northeast
mountains-Okanogan Highlands.

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