Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 010455
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
955 PM PDT Wed Aug 31 2016

.SYNOPSIS...
Our summer weather will come to an end as a chilly low pressure
system arrives Thursday and Friday. Widespread rain is expected
over north Idaho and northeast Washington Friday. The Labor Day
weekend will be cooler than average with scattered afternoon
showers over the mountains.


&&

.DISCUSSION...
Evening update: A shortwave is interacting with some midlevel
instability and bringing a threat for showers and isolated
thunderstorms across the Idaho Panhandle tonight. As of
945PM...one cluster of showers was moving through the Camas
Prairie and will bring a brief threat for isolated lightning
strikes and wind gusts up to 30 mph. Models are in general
agreement that the shortwave driving these will take a slight turn
to the north and track through N Idaho keeping a threat for
elevated convection for the next 6-8 hours.

Meanwhile a cold front was focusing showers and a few storms just
west of the Cascade Crest but as this activity reached the crest,
it fell apart rather quickly. There is new activity starting to
blossom at this hour so main changes were to delay the threat east
of the crest prior to 08z. The upper-level cold pool has moved
into Wrn WA and this will help to destabilize the air mass so see
no reason to remove the inherited pops. Temperatures have also
been warmed for tonight with the presence of cloud cover from the
aforementioned features.  sb

&&

.AVIATION...
00Z TAFS: moist southwest flow aloft ahead of an approaching
trough will bring a weak mid level disturbances through the
eastern TAF sites tonight with mid level cloud decks. The main
trough will approach the region on Thursday with thickening high
clouds and precipitation beginning near the Cascade crest by 00Z
Friday. VFR conditons are expected at all TAF sites through 00Z
Friday.
/MJF


&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        56  74  51  64  47  67 /  10  10  70  70  60  20
Coeur d`Alene  55  74  50  62  46  65 /  10  10  70  80  60  20
Pullman        53  74  48  64  44  66 /  10  10  60  60  40  10
Lewiston       59  80  55  72  52  74 /  10  10  60  60  30  10
Colville       54  73  47  62  44  70 /  10  10  70  80  60  40
Sandpoint      53  74  47  58  45  64 /  20  10  70  90  70  40
Kellogg        52  73  46  58  45  64 /  20  10  70  90  70  30
Moses Lake     58  76  51  70  46  74 /  10  10  40  40  20  10
Wenatchee      59  72  54  69  51  72 /  10  10  60  40  20  10
Omak           57  75  51  68  46  72 /  10  20  60  60  30  20

&&

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

$$



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