284
FXUS66 KOTX 040553
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
1053 PM PDT Tue Jun 3 2025

.KEY MESSAGES...

- Dry and temperatures warming through the week.

- Elevated fire concerns in central Washington Friday.

- Widespread Moderate HeatRisk Saturday through Monday.

&&

.SYNOPSIS...
This week will bring dry weather and a warming trend. Friday
will be breezy in central Washington raising fire weather
concerns. Temperatures will warm into the 90s to low 100s by
Sunday with widespread Moderate HeatRisk Saturday through
Monday.

&&

.DISCUSSION...
Tuesday through Friday: The Inland Northwest will be under a
broad northwest flow with strong high pressure parked in the
eastern Pacific. Weather will remain generally dry with
temperatures gradually warming through the week. Forecasted high
temperatures are in the 80s to low 80s by Friday. Mid level
moisture will bring diurnally driven cumulus build ups across
the mountains and eastern Washington and north Idaho. A weak
system embedded in the northwest flow will clip the region on
Wednesday with an increase in high level clouds and a small
chance (10-15%) for showers across the northern mountains.
Another shortwave and weak cold front on Friday will move
through the Inland Northwest, bringing an increase to the
onshore flow west of the Cascades. This will induce a stronger
cross-Cascade surface pressure gradient with breezier winds
anticipated. Forecasted pressure gradients between PDX-GEG are
not looking as strong as they were on Saturday, but the NBM is
giving Wenatchee and the Waterville Plateau a 60% chance for
sustained winds above 20 mph and a 30-40% chance for over 25
mph.

Saturday through Monday: Ensemble guidance is in good agreement
for the offshore ridge to shift eastward this weekend and remain
overhead through Monday. Most ensemble members between the
ECMWF, GEFS, and GEPS have 850mb temperatures of 20-25C across
the Inland Northwest for Sunday and Monday. This would
correspond to widespread surface high temperatures at least in
the 90s. The NBM is giving the L-C valley a 50-70% chance and
the Columbia Basin a 20-30% chance for highs above 100F for
Sunday and Monday. The current forecast suggests a few record
high temperatures for 6/8 and 6/9 will be threatened at Omak,
Spokane, Pullman, and Lewiston. HeatRisk for Sunday and Monday
will increase to Moderate across the entire region. This level
of heat will affect most individuals sensitive to heat,
especially those without effective cooling and/or adequate
hydration. /vmt

&&

.AVIATION...
06Z TAFS: VFR conditions will prevail with occasional mid and
high clouds passing through the region. Winds will be diurnally
driven with breezy late afternoon and evening northwest winds in
central Washington at KEAT and KEPH.

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:/www.weather.gov/otx/avndashboard

&&

.Preliminary Point Temps/PoPs...
Spokane        73  49  77  50  82  55 /   0   0   0   0   0   0
Coeur d`Alene  73  44  75  49  81  54 /   0   0   0   0   0   0
Pullman        70  46  72  47  78  51 /   0   0   0   0   0   0
Lewiston       78  52  80  54  86  57 /   0   0   0   0   0   0
Colville       73  41  77  45  82  50 /   0   0   0   0   0   0
Sandpoint      72  47  75  48  81  53 /  10  10   0   0   0   0
Kellogg        68  51  72  52  78  56 /   0   0   0   0   0   0
Moses Lake     80  50  83  51  87  56 /   0   0   0   0   0   0
Wenatchee      79  54  82  56  86  60 /   0   0   0   0   0   0
Omak           78  50  82  52  86  55 /   0   0   0   0   0   0

&&

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

&&

$$