556
FXUS66 KOTX 252315
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
315 PM PST Tue Nov 25 2025

.KEY MESSAGES...

- Mountain snow impacting passes into Wednesday.

- High degree of uncertainty for valley snow potential Tuesday night
  into Wednesday and Wednesday night into Thursday. Light to
  Moderate snow on the mountain passes.

- Colder temperatures over weekend.

&&

.SYNOPSIS...
A warm front will continue tracking through the region through
Wednesday bring snow impacts to the mountain passes. A midweek
systems will bring the potential for light snow in the lowlands
and moderate snow over the mountains but carries high
uncertainty. A dry, cold air push will bring colder temperatures
for the weekend.

&&

.DISCUSSION...
Tonight through Wednesday: A system is currently pushing through
the Pacific Northwest. It is swinging a moist warm front over
Eastern Washington. It will continue to bring mountain snow and
wintry mix before exiting Wednesday morning. Highest precip
amounts are expected over the Cascades and lessening as the
system spreads East. Cascades crest will receive snow amounts
ranging from 6 to 10 inches. Stevens Pass has a 90 percent
probability of locally heavier amount of 13 inches through
Wednesday morning. The midslopes of Cascades have range of 1 to
4 inches. The rest of the region will struggle to get more than
an inch as a wintry mix is expected. Overnight lows will be in
the upper 20s and low 30s. Drier air and clearing skies fill in
behind the exiting system through the day Wednesday. Daytime
highs will be in the 40s.

Wednesday night through Thursday: Overnight Wednesday into
Thursday, a well organized Low will move through the Pacific
Northwest. It has warmer air associated with it than the
previous one. 850mb temperatures are expected to slightly below
0 degrees Celsius. Snow levels for most of the region will be
4000ft or higher. It leads to mountain snow and lowland event
for most. The exception will be the northern portion of Eastern
Washington. It has the coldest upper levels with snow levels
around 3000 to 3500 feet. Northern valleys should see a wintry
mix if not snow. For amounts, Stevens Pass can range from 2 to 7
inches. A range 1 to 5 inches is expected across the northern
portions. Precip type uncertainty is high with the system as it
very borderline on the temperatures. Temperatures a few degrees
higher than previous day. Overnight lows will be in the 30s.
Highs will be in the 40s.

Friday to Monday: A ridge pattern will begin to develop off the
coast. It will promote a cold, dry air push into the Pacific
Northwest. There is potential light snow showers continuing over
the mountains of the Cascades and Idaho Panhandle but not
bringing any significant snow amounts. The main point is this
the seasons first decent Arctic Air push. Highs will be in the
30s. Overnight lows will be in the 20s. /JDC

&&

.AVIATION...
00Z TAFs: A warm front is currently bringing snow to the
Cascades. IFR conditions are currently over KMWH and KEAT. IFR
conditions KGEG, KSFF, KCOE, KPUW, and KLWS by 02Z. As precip
moves in, conditions will degrade to MVFR/IFR with ceilings
falling and visibilities decreasing. TAF sites will have IFR
conditions early Wednesday morning. Snow accumulation will be
less than an inch for area TAF sites. Conditions will continue
to be IFR/MVFR through the period.


.FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: Moderate
confidence on timing of MVFR/IFR conditions through the period.

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

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        32  40  34  40  32  41 / 100  30  50  80  80  30
Coeur d`Alene  33  40  35  41  32  39 / 100  50  50  90  90  50
Pullman        33  41  36  44  34  40 / 100  60  60  70  90  70
Lewiston       38  48  41  49  39  45 / 100  50  50  50  80  60
Colville       26  40  28  39  23  40 /  90   0  40  90  80  20
Sandpoint      30  39  31  39  29  37 /  90  50  50  90  90  50
Kellogg        34  40  37  42  34  39 / 100  80  70  90  90  80
Moses Lake     33  42  36  42  31  44 /  90  10  60  80  60  10
Wenatchee      32  41  36  40  34  43 /  90  10  70  80  60  10
Omak           31  40  34  40  29  41 /  80   0  30  80  40  10

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
WA...Winter Weather Advisory until 4 AM PST Wednesday for Central
     Chelan County-Western Chelan County.
ID...Winter Weather Advisory from 10 PM this evening to 10 AM PST
     Wednesday for Central Panhandle Mountains.

&&

$$