638
FXUS66 KOTX 070014
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
514 PM PDT Sat Sep 6 2025

.KEY MESSAGES...

- Unsettled weather returning to the region over the weekend and
  into next week with increasing threat for showers and
  thunderstorms.

- Gusty outflow winds to 40 mph possible near thunderstorms
  Saturday evening and night.

- Temperatures trending cooler heading into this weekend and
  next week.

- Smoke and haze expected to continue through the weekend

&&

.SYNOPSIS...
Smoke and haze is expected to continue over the weekend. The
threat for showers and thunderstorms will increase this evening
and into Sunday. Gusty outflow winds are possible near any
thunderstorms. Additional rain chances will arrive next week
with cooler temperatures.

&&

.DISCUSSION...
Tonight through Sunday: The Low is tracking off the coast of
southern Oregon and is pushing a shortwave through northern
Oregon. The wave will continue to move north through tonight.
It will begin to impact the Inland Northwest in the next couple
of hours. It will bring light showers and isolated
thunderstorms. Confidence is fairly low on which areas will be
impacted by the thunderstorms. One concern are the winds ahead
of the wave. Some models are showing winds sustained in the
teens with gusts near 30 to 35 MPH. While the shower chances
increase across the region, the amounts are not expected to be
much for the most of the lowland locations with a few hundredths
at most. It will hopefully bring better air quality as the rain
and wind mix out the smoke.

Monday through Friday: The Low will slowly move South of the
Inland Northwest through the period. It will continue to pump
moisture and bring widespread shower chances through the
Friday. Precip amounts range from a tenth or two for the
lowlands and a quarter to 3 quarters of an inch for the higher
terrains. Ensembles support isolated thunderstorm threat. With
this pattern, temperatures will moderate to season normals.
Highs will be in 70s and low 80s. Overnight lows will be in the
50s. /JDC

&&

.AVIATION...
00Z TAFS: Widespread visibility restrictions due to smoke will
continue into Sunday. Visibility is expected to range from 2-6
miles for most of Central and Eastern Washington and north
Idaho, but areas near fires including Colville will see
visibilities as low as 1 mile. A disturbance will slowly lift
south to north through the region overnight. High based showers
with embedded thunderstorms. Any precipitation cores will have
the potential to produce gusty outflow winds of 20-35 mph.

FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS:
Low confidence in precise visibilities at the TAF sites from
haze and smoke. There is moderate confidence for scattered
thunderstorms 00-06z and beyond but low confidence in exact
locations. For the heaviest precipitation cores, outflow winds
to 40 mph possible. /sb


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

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:/weather.gov/otx/avndashboard

&&

.Preliminary Point Temps/PoPs...
Spokane        89  63  86  58  82  55 /   0  20  20  20  10  50
Coeur d`Alene  86  63  86  59  83  57 /   0  20  20  20  10  40
Pullman        90  58  82  53  81  52 /  10  20  30  30  10  60
Lewiston       94  67  89  63  87  61 /  10  30  40  30  10  50
Colville       87  53  86  49  82  47 /   0  20  40  40  30  40
Sandpoint      86  58  83  54  80  52 /   0  20  30  30  20  40
Kellogg        87  63  84  60  82  57 /   0  20  30  40  10  40
Moses Lake     94  60  87  56  82  55 /  20  40  40  10  10  50
Wenatchee      95  67  85  62  81  61 /  30  40  50  20  10  60
Omak           90  65  88  60  83  59 /  10  30  40  30  20  40

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
WA...Air Quality Alert until noon PDT Monday for Central Chelan
     County-Lower Garfield and Asotin Counties-Moses Lake Area-
     Northeast Blue Mountains-Northeast Mountains-Okanogan
     Highlands-Okanogan Valley-Spokane Area-Upper Columbia
     Basin-Washington Palouse-Waterville Plateau-Wenatchee
     Area-Western Chelan County-Western Okanogan County.
     Red Flag Warning from 4 PM this afternoon to 3 AM PDT Sunday
     for East Washington Central Cascades (Zone 696)-Foothills
     of Central Washington Cascades (Zone 705)-Waterville
     Plateau (Zone 706)-Western Columbia Basin (Zone 707).
ID...Air Quality Alert until noon PDT Monday for Central Panhandle
     Mountains-Coeur d`Alene Area-Idaho Palouse-Lewis and
     Southern Nez Perce Counties-Lewiston Area-Northern
     Panhandle.

&&

$$