428
FXUS66 KOTX 282125
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
125 PM PST Fri Nov 28 2025

.KEY MESSAGES...

- Colder temperatures over weekend into early next week with
  occasional chances for snow.

&&

.SYNOPSIS...
Temperatures cool to below normal over the weekend. A couple of
weather systems Saturday and Monday night week will bring the
potential for additional light snow.

&&

.DISCUSSION...
Friday through Sunday: Much drier modified continental polar air has
filtered in bringing clearing skies and dry conditions. There will
be breezy north winds in the Okanogan valley and upper Columbia
Basin gusting up to 35 mph before sunset thanks to a +6 mb gradient
from Kelowna BC to Ephrata. A shortwave trough will move through the
upper ridge and bring snow showers to Stevens Pass and far SE
WA/southern Panhandle Saturday. The Palouse and Camas Prairie could
see some snowflakes Saturday evening with this system but no impacts
expected. Sunday morning will be cold in the teens to upper 20s as
synoptic descent will clear out clouds (especially closer to the
Canadian border) and the still present dry airmass promotes strong
radiational cooling.

Monday through Friday: Precipition chances increase Monday as
decaying atmospheric river moisture plume sags south from the
central BC coast Sunday night into Monday. The best timeframe for
lowland snow out of this system is Monday night in the eastern third
of Washington and north Idaho as a shortwave trough rides around the
top of the strong ridge in the Gulf of Alaska and pivots towards the
Pacific northwest. There is a 10-20% chance of an inch or more of
snow for extreme eastern Washington and a 20-50% chance for north
Idaho from from Monday afternoon to Tuesday afternoon. We dry back
out for Wednesday and temperatures moderate back to around normal.
Unsettled conditions continue late next week but not expecting any
significant storms with a strong ridge offshore blocking
systems.

&&

.AVIATION...
18Z TAFs: Trending towards VFR conditions this morning, if not
already VFR. KPUW-KLWS will improve towards 20-23z as drier air
scours out low stratus. 10-20% chance of fog forming east of
Moses Lake around 08z and advecting west towards KEAT.
Confidence too low for prevailing fog in the KMWH or KEAT TAF.

.FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: Confidence for
a transition to VFR conditions is high. Low confidence for fog
forming in the Columbia Basin Saturday morning.

-----------------------

Confidence descriptors:
Low - Less than a 30 percent chance
Moderate - 30 to 70 percent chance
High - Greater than a 70 percent chance

For additional probabilistic information for NWS Spokane
airports,please refer to the Aviation Dashboard on our
webpage: https:/www.weather.gov/otx/avndashboard

&&

.Preliminary Point Temps/PoPs...
Spokane        25  36  21  35  25  36 /   0   0   0   0   0  10
Coeur d`Alene  24  35  21  34  25  37 /   0   0  10   0   0  10
Pullman        27  38  26  35  24  37 /   0   0  20  10   0  10
Lewiston       32  41  31  39  28  41 /   0   0  20   0   0   0
Colville       21  37  17  35  19  35 /   0   0   0   0   0  10
Sandpoint      21  32  18  32  22  34 /   0   0  10   0   0  20
Kellogg        23  35  21  35  25  37 /   0   0  10   0   0  20
Moses Lake     28  40  23  38  24  37 /   0   0   0   0   0   0
Wenatchee      32  38  28  39  29  38 /   0   0  10   0   0   0
Omak           27  37  23  37  25  36 /   0   0   0   0   0   0

&&

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

&&

$$