Spokane, Washington Weather Forecast Discussion

232
FXUS66 KOTX 122013
AFDOTX
Area Forecast Discussion
National Weather Service Spokane WA
113 PM PDT Fri Sep 12 2025
.KEY MESSAGES...
- Showers and thunderstorms continue mainly in the Idaho panhandle
  Friday afternoon and evening.
- Dry and warm Saturday, then cool and showery Sunday into
  Monday.
- Areas of smoke and haze persist through the weekend,
  especially near wildfires.
&&
.SYNOPSIS...
Showers and thunderstorms will continue through Friday afternoon
and evening, generally confined to the Idaho panhandle. Areas
of smoke and haze are expected to continue through at least the
weekend, especially near wildfires. Saturday will be warm and
dry, then the next weather system bringing cooler temperatures
and additional showers moves in Sunday.
&&
.DISCUSSION...
Showers and thunderstorms will remain confined to the ID panhandle
through this evening as the last of the moisture and instability
that has brought storms to the region over the past few days shifts
eastward. Heading into Saturday, a transient ridge of high pressure
will bring a brief period of dry and warm conditions regionwide with
high temperatures rising into the mid 80s. By Sunday, the next
shortwave trough will be moving in off the Pacific, cooling
temperatures by 10 to 15 degrees and bringing widespread chances for
showers. While most of the region will likely see at least a
sprinkle, the forecasted rainfall totals are looking less and less
impressive with each consecutive model run. With numerous fires
burning in the area, a widespread wetting rain (greater than 0.1
inch) would be extremely beneficial, but I`m becoming increasingly
pessimistic as to whether we`ll get that out of this system. The
trough will exit the region by Monday afternoon taking chances for
showers with it, and another ridge of high pressure will be quick to
build in its place through the middle of next week. By Tuesday and
Wednesday we`re looking at dry conditions and temperatures warming
back into the 80s. /Fewkes
&&
.AVIATION...
18Z TAFS: VFR conditions will prevail through the TAF period.
High clouds will begin to move in overnight ahead of a shortwave
disturbance pushing onshore. Convection will be primarily
confined to the ID panhandle this afternoon and is not expected
to impact TAF sites with the exception of a 30 percent chance
for showers and thunderstorms over KLWS between 18-21Z.
FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS:
High confidence in VFR conditions.
-----------------------
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        55  84  57  75  52  72 /   0   0   0  40  30  20
Coeur d`Alene  56  84  57  78  54  72 /  10   0   0  30  40  20
Pullman        51  81  53  70  47  67 /  10   0   0  40  50  20
Lewiston       59  86  61  76  57  75 /  10   0   0  50  50  20
Colville       45  84  46  78  45  74 /   0   0   0  40  50  30
Sandpoint      50  81  51  77  49  70 /  20  10   0  40  50  40
Kellogg        56  79  58  74  54  64 /  40  10  10  50  60  40
Moses Lake     54  85  56  74  50  76 /   0   0   0  50  20  10
Wenatchee      62  85  62  74  56  76 /   0   0   0  50  20   0
Omak           59  87  59  81  57  81 /   0   0   0  30  30  10
&&
.OTX WATCHES/WARNINGS/ADVISORIES...
WA...Air Quality Alert until further notice for Central Chelan
County- Northeast Mountains-Okanogan Highlands-Wenatchee Area-
Western Chelan County. ID...None.
&&
$$

NWS OTX Office Area Forecast Discussion