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FXUS66 KOTX 260904
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
204 AM PDT Wed Sep 26 2018

.SYNOPSIS...
Warm daytime highs are expected through Thursday, with mostly
clear skies. A cold front moving on the region Thursday night into
Friday will bring a gradual cool down towards normal temperatures
and perhaps some mountain showers to the region for the weekend
and into early next week.

&&

.DISCUSSION...
Today through Thursday: Very nice autumn weather for the next
couple of days. Strong high pressure over the Gulf of Alaska will
keep the storm track way up into Alaska, then down through BC into
Montana. The only thing we'll see is some high clouds in the
northern areas. Otherwise we should have sunshine and warm
temperatures.

On Thursday a Canadian air mass will move southward east of the
Rockies. We won't see much of this air mass, but the pressure
pattern will bring northerly winds down the Okanogan Valley and in
the north Idaho Purcell Trench, as well as the Basin. At this
point, these winds don't look strong enough to cause any real
blowing dust issues. RJ

Thursday night through Saturday...Model guidance are similar showing
a blocking pattern off of the west coast with northwest flow over
the Inland Northwest. Besides a few mountain showers near the
north Panhandle on Thursday night, this will be a dry period.
Temperatures from the high 60s to around 80 will be very close to
seasonal normals. The gradient will be northeasterly with winds 5
to 15 mph and gust around 20 mph Friday afternoon through Friday
night. Otherwise a couple of nice fall days are in store.

Saturday night through Monday...By Saturday night a wave moving south
through British Columbia will merge with a closed low moving up
from the SW Oregon coast. This will increase precipitation chances
across the area. The focus of the precipitation will be along the
higher terrain to the north of the Columbia basin, but even areas
south of Highway 2 may see a few stray showers. Temperatures will
cool 5-7 degrees on Sunday with a slight rebound in afternoon
highs on Monday.

Tuesday through Thursday...Guidance really falls apart through
this period and confidence is pretty low on just what will happen.
This forecast leans towards the consensus and favors a mostly dry
Northwest to northerly flow over the region. This would result
cooler temperatures and mostly sunny afternoons. Tobin

&&

.AVIATION...
06Z TAFS: VFR conditions at all TAF sites through 06Z Thursday.
There will be some passing high cirrus and going from a broken
cirrus cover to scattered to few by Wednesday afternoon and
evening. Winds will be light as well. Not much change until winds
increase from the north Thursday night into Friday. /SVH


&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane 72 50 74 48 70 47 / 0 0 0 0 0 0
Coeur d'Alene 72 46 72 45 69 44 / 0 0 0 0 0 0
Pullman 72 46 75 46 73 45 / 0 0 0 0 0 0
Lewiston 78 51 80 51 78 50 / 0 0 0 0 0 0
Colville 75 45 75 43 72 43 / 0 0 0 0 0 0
Sandpoint 69 42 69 41 66 40 / 0 0 0 0 0 0
Kellogg 69 43 68 41 68 43 / 0 0 0 0 0 0
Moses Lake 78 45 81 49 77 44 / 0 0 0 0 0 0
Wenatchee 78 55 79 54 76 52 / 0 0 0 0 0 0
Omak 79 51 79 49 75 48 / 0 0 0 0 0 0

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...None.
WA...None.

&&

$$
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