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fxus66 kotx 271807 
afdotx

Area forecast discussion
National Weather Service Spokane Washington
1107 am PDT Mon Mar 27 2017

Synopsis...
showers will linger over the region today behind an exiting cold
front. After a short break in the weather tonight another round of
widespread moderate precipitation will arrive Tuesday night and
last until Thursday. Friday will bring a dry break period before
more unsettled weather for next weekend.



&&

Discussion...
rest of today...a cold front is exiting the region to the east
today. A weakening upper level short wave trough is now transiting
the forecast area. The westerly flow behind the exiting front is
promoting a rain shadow in the Cascades Lee and deep basin and
lots of sun is expected in these areas today...albeit a bit
breezy especially near the Cascade gaps. Over the eastern zones
the cold air aloft in the cusp of the short wave will reduce
stability this afternoon and invite isolated to scattered rain
showers developing in a random basis over the eastern basin. There
is a small chance of one or two of these showers may produce a
few lightning strokes late today particularly over the Palouse
and points southward. The westerly flow will promote more numerous
and frequent showers...with snow levels around 4000 feet...in the
Idaho Panhandle mountains. A quick quieting down period is
expected as the sun sets tonight. No significant updates to the
inherited forecast have been made except to introduce a slight
chance of afternoon thunderstorms to the southeast zones. /Fugazzi



&&

Aviation...
18z tafs: a moist boundary layer in the wake of an exiting
storm system is promoting fields of shallow MVFR stratocumulus
over the eastern Columbia Basin and continued showers and mountain
obscurations over the Idaho Panhandle. A cool pocket aloft in the
cusp of a transiting short wave trough is expected to promote
mixing this afternoon and a lifting of ceilings to low VFR
stratocumulus with isolated to scattered rain showers in the
afternoon and early evening hours affecting the eastern taf sites.
There is a small chance of a thunderstorm over southeast
Washington this afternoon...but this threat is too low confidence
to mention in tafs. Overnight tonight light upslope flow over
the kgeg area taf sites may promote IFR stratus formation for a
few hours Tuesday morning. The keat and kmwh taf sites will be in
a downslope clearing region with VFR conditions expected through
the end of the taf period. /Mjf

&&

Preliminary point temps/pops...
Spokane 50 34 49 39 51 39 / 40 10 40 80 100 60
Coeur D'Alene 47 34 46 37 49 38 / 50 30 50 80 100 70
Pullman 48 35 49 39 51 40 / 50 20 30 50 100 70
Lewiston 54 37 54 42 56 42 / 40 10 20 20 80 70
Colville 48 33 47 36 49 37 / 30 10 50 80 100 50
Sandpoint 45 33 45 34 46 35 / 50 10 60 70 100 80
Kellogg 44 33 44 35 46 36 / 70 40 50 50 100 80
Moses Lake 58 37 57 43 58 41 / 10 0 10 50 100 10
Wenatchee 53 37 53 39 54 38 / 10 10 20 60 100 10
Omak 52 34 51 39 52 37 / 20 10 20 70 100 20

&&

Otx watches/warnings/advisories...
Idaho...none.

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