Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 210553
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
1053 PM PDT Wed Sep 20 2017

.SYNOPSIS...
Rain showers will decrease through the evening hours across
eastern WA and north ID. A band of light rain will move in
from the north overnight...transitioning to hit and miss showers
Thursday afternoon. A drier and warmer weather pattern starts
Friday and persists into the weekend and possibly early next
week.


&&

.DISCUSSION...
Evening update: Still holding on to a few showers across the lower
Idaho Panhandle while a cluster of showers ahead of an approaching
warm front sags in from the north. Between these features, areas
of clearing will result in the potential for patchy fog but I do
not expect this to last long. This is because a broad area of
cloud cover and light rain will arrive from the north tonight.
This band of moisture is associated with the remnants of a trowal
air stream wrapped around a deep low over the Canadian Plains. So
with the cold low over the region, this will actually equate to
warm advection from the north, not a common pattern. This band
will decay close to the I-90 corridor but afternoon heating will
promote isolated to scattered showers until sunset. /sb


&&

.AVIATION...
06Z TAFS: A cluster of showers will track in from north but should
weaken while reaching the terminals. Patchy fog and areas of MVFR
stratus will be possible which then becomes overrun by a band of
light rain sagging in from the north 10-17z. The band of moisture
looks to fall apart over the area btwn 17-19z then heating to
promote hit or miss showers through 02z. Drier north flow will
develop tomorrow night with clearing from north to south. /sb


&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        39  53  40  57  41  62 /  20  50  10  10  10  10
Coeur d`Alene  37  52  35  56  37  61 /  20  50  10  10  10  10
Pullman        37  53  37  57  39  59 /  20  30  10  10  10  10
Lewiston       42  59  41  62  43  66 /  30  30  20  10  10  10
Colville       38  57  36  61  38  67 /  50  40  10  10  10  10
Sandpoint      37  51  34  56  34  59 /  30  60  20  10  10  10
Kellogg        36  48  33  52  34  56 /  40  60  30  20  10  10
Moses Lake     38  62  42  64  41  69 /  10  40  10   0  10   0
Wenatchee      44  61  44  65  45  69 /  10  40  10   0  10   0
Omak           42  61  40  64  41  69 /  50  30  10   0  10   0

&&

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

&&

$$


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