Area Forecast Discussion
Issued by NWS Spokane, WA

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029
FXUS66 KOTX 190437
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
837 PM PST Sun Feb 18 2018

.SYNOPSIS...
An Arctic cold front will bring gusty north winds and occasional
snow showers through this evening. Snow may be heavy at times but
accumulations will vary over a short distance. Wind chills tonight
will be in the single digits to below zero. Monday will be drier,
with very cold and dry conditions. Cold and dry conditions persist
throughout the week with the next chance for snow arriving late in
the week.


&&

.DISCUSSION...
Ended winter weather highlights for the Idaho Palouse and the
Central Panhandle Mountains of Idaho as snow has either ended or
decreased substantially in intensity. Still some blowing and
drifting of the accumulated fallen snow is possible as the brisk
robust northerly winds blow behind the cold front tonight, and
the winds are especially robust on the mountains. /Pelatti

&&

.AVIATION...
00Z TAFS: An arctic front is sagging southward through the region
with -SHSN along this frontal boundary manly concentrated over the
eastern Columbia Basin with mainly MVFR ceilings and visibilities
with occasional IFR conditions. Conditions are expected to quickly
improve to VFR at the KGEG and KSFF TAF sites between 00Z and 03Z.
Blowing snow at the KCOE TAF site will restrict visibility at
times tonight as windy conditions develop as the arctic air
funnels through the valleys of north Idaho. Breezy north to
northeast winds will impact most TAF sites through 18Z Monday.
Western TAF sites will quickly improve to VFR this evening as the
front passes. A surface inverted trough along the Idaho/Washington
border will delay improvement at the KPUW TAF site with MVFR
-SHSN possible through much of the night. All TAF sites are
expected to become VFR after 12Z and remain so for the remainder
of the TAF period as dry air becomes established. /MJF






&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane         9  20   4  23   7  26 /  10   0   0  10  10   0
Coeur d`Alene   8  19   1  22   4  26 /  10   0   0  10  10   0
Pullman        12  19   6  22   9  26 /  10  10   0   0  10  10
Lewiston       21  24  11  28  15  33 /  10  10   0   0  10  10
Colville       10  22   1  25   5  28 /  10   0   0  10  10  10
Sandpoint       8  20   3  22   5  25 /  10   0   0  10  10  10
Kellogg         5  16  -2  20   1  24 /  10  10   0  10  10  10
Moses Lake     17  29  10  33  14  33 /  10   0   0   0  10   0
Wenatchee      19  28  12  31  15  32 /  10   0   0  10  10  10
Omak           14  24   6  26   8  29 /  10   0   0  10  10  10

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...Winter Weather Advisory until 10 AM PST Monday for Lewis and
     Southern Nez Perce Counties.

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


&&

$$



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