298
FXUS66 KOTX 150439
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
939 PM PDT Sat Sep 14 2024

.SYNOPSIS...

Additional light shower activity is expected Sunday and Monday.
Tuesday and Wednesday have the potential to be cool with highs in
the 60s and low 70s with periods of rain over north Idaho and the
eastern third of Washington. Winds will be breezy from the west on
Tuesday with potential for gusts near 25 mph.

&&

.DISCUSSION...
Evening update: An upper level trough is dropping into the region
tonight. The forecast has been updated based on current radar
trends as well as expected trends with a couple areas of isolated
shower activity. The first area stretches over North Central
Washington from Vantage up into the Okanogan Valley and Highlands.
As a mid level dry slot moving up from the southwest is expected
to result in these showers becoming more confined to areas near
the Canadian border (primarily Okanogan Highlands) during the
late evening and overnight hours. A second area is over SE
Washington into the Central Panhandle Mountains. Weak elevated
instability has triggered a few showers this evening. This
activity is expected to continue through the night as this axis of
moisture and instability lingers. JW

&&

.AVIATION...
06Z TAFS: VFR conditions will prevail for the TAF sites. There
are a couple bands of showers expected overnight, one mainly up
around the Republic area and another around Pullman and Lewiston.
On Sunday the shower band over SE WA will lift north towards
Spokane and Coeur d`Alene. Although there isn`t much organization
or forcing, and its a narrow band so still some uncertainty on its
exact placement. Thus precipitation continues to be addressed with
a PROB30 group.

FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS:
Confidence remains high for VFR conditions at the TAF sites. Given
the narrow band of rain shown by the models over far Eastern WA/N
Idaho on Sunday, prevailing conditions could develop into a steady
light rain for a couple hours in a localized nature. But
confidence still too low with precise timing, and location for
more than a PROB30 group.

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        48  70  50  77  51  73 /  10  30  20  10  10  20
Coeur d`Alene  48  69  50  77  51  70 /  10  30  20  10  20  40
Pullman        46  64  45  70  48  65 /  10  50  30  20  30  40
Lewiston       57  72  55  76  57  73 /  20  50  40  30  40  40
Colville       38  71  40  78  40  76 /  20  30  10   0  10  10
Sandpoint      44  68  48  75  48  70 /  20  30  20  10  20  40
Kellogg        50  67  52  72  54  63 /  10  40  30  30  30  60
Moses Lake     47  73  51  80  49  78 /  10  10   0   0   0   0
Wenatchee      51  72  54  80  54  75 /  20  10   0   0   0  10
Omak           49  75  50  81  50  80 /  20  10   0   0   0   0

&&

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

$$