404
FXUS66 KOTX 052246
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
346 PM PDT Tue Aug 5 2025

.KEY MESSAGES...

- Cooler with showers and thunderstorms Wednesday into Thursday

- Dry and warmer this weekend

&&

.SYNOPSIS...
Another weather system will move into the region on Wednesday
and Thursday bringing cooler temperatures with high temperatures
mainly in the 70s, along with showers and thunderstorms. Summer
like weather will return this weekend into early next week with
a significant warming trend as high temperatures warm back up
into the 80s and 90s.

&&

.DISCUSSION...
Today through Friday: Today is a much cooler day than yesterday with
breezy winds ahead of a shortwave. A weak shortwave moving ashore
tonight will bring increased cloud cover and chances for light rain
Wednesday. The best chances for rain totals greater than a quarter
inch through Thursday morning is within 15 miles of the Cascade
crest (60-90% chance) and the northern mountains (15-40% chance).
The best chances for thunder Wednesday is near the Canadian border
(15-30% chance) where hi-res models indicate around 100-500 J/kg of
surface based cape. A stronger wave will drop southeast from
Vancouver Island Wednesday night and into Thursday morning bringing
a better chance for thunderstorms. With 500-1500 J/kg of surface
based cape and 15-30 kt of surface to 6 km shear, storms could be on
the stronger side. The best shear/cape overlap is in southeastern
WA/southern ID Panhandle around 3-8 pm Thursday just downstream the
base of the trough. These stronger cells would be capable of hail
size up to an inch, gusty outflow winds around 30-50 mph, and
frequent lightning. By Friday, the trough quickly departs into
western MT ushering in more stable northerly flow. There is still a
small chance (15%) for thunderstorms in far NE WA/north Idaho but
these cells will not have the strength of Thursday`s cells.

Friday through Tuesday: Friday brings the start of a warming and
drying trend as a high pressure ridge builds off the WA coast. By
Sunday, temperatures will return to near/above average in the upper
80s to mid 90s with dry conditions. DB

&&

.AVIATION...
00Z TAFS: VFR conditions expected through the period. clouds start
to invade from the west overnight, with some light rain chances
coming into the Cascades. A risk will approach EAT-MWH around
15z Wednesday and spread towards GEG-SFF-COE around 20z
Wednesday.

FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS:
High confidence for 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        57  74  56  75  51  79 /   0  30  50  60  20  10
Coeur d`Alene  57  76  56  73  51  75 /   0  30  50  70  30  10
Pullman        52  74  52  71  46  74 /   0  20  40  60  30  10
Lewiston       63  83  64  79  56  82 /   0  10  30  50  30  10
Colville       48  72  44  73  41  79 /   0  50  60  80  30  10
Sandpoint      52  72  51  70  47  72 /   0  30  60  80  40  20
Kellogg        58  73  58  67  51  70 /   0  20  50  80  30  10
Moses Lake     60  79  54  77  50  85 /   0  30  20  20  10   0
Wenatchee      64  76  59  76  58  85 /  20  60  30  30  10   0
Omak           62  76  54  77  54  83 /  10  50  30  50  10   0

&&

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

&&

$$