Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 210338
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
838 PM PDT Fri Apr 20 2018

.SYNOPSIS...
A quick moving cold front will bring scattered showers tonight and
early Saturday and windy conditions Saturday afternoon. The new
work week is expected to start dry and mild and probably remain
dry with a strong warming trend through the week.


&&

.DISCUSSION...
Evening update: A mid level front will sweep across the region
tonight bringing mainly passing mid level clouds with a chance of
showers limited to mainly the northern mountains with showers
likely along the Cascade crest late tonight as moist upslope flow
reaches the area behind the surface cold front. The 00z NAM has
trended drier over northern WA with the higher resolution models
also drier except near the Cascade crest. Given current
temperature/dew point spreads of 20-25F for many locations and the
fast movement of the front the threat of showers will be limited
to mainly the mountains. POP`s were adjusted for the rest of
tonight...trended downward for many locations.

Snow levels lower to near 3500 feet Saturday morning in the
Cascades so brief accumulations are possible over Stevens Pass.
JW


&&

.AVIATION...
00Z TAFS: A quick hitting cold front will swing through tonight.
Cloud cover will thicken tonight with showers mainly over the
mountains of northern Washington into the Idaho Panhandle. Dry
air in the boundary layer will keep cigs above 5 kft AGL with VFR
conditions prevailing through 00Z Sunday. Winds will become gusty
Saturday morning to between 25-35 kts possible and will continue
into the afternoon. JW


&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        43  54  34  56  36  63 /  20  10   0   0   0   0
Coeur d`Alene  43  54  33  56  35  62 /  30  30   0   0   0   0
Pullman        44  53  33  54  35  61 /  20  10   0   0   0   0
Lewiston       48  61  38  60  40  66 /  20  10   0   0   0   0
Colville       44  58  34  60  34  66 /  50  30   0   0   0   0
Sandpoint      41  52  32  55  34  60 /  30  60   0   0   0   0
Kellogg        38  50  32  55  34  58 /  30  50  10   0   0   0
Moses Lake     46  60  36  62  38  69 /  10   0   0   0   0   0
Wenatchee      44  56  37  60  39  67 /  10  10   0   0   0   0
Omak           45  59  37  62  37  68 /  30  10   0   0   0   0

&&

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

&&

$$


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