866
FXUS66 KOTX 030456
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
956 PM PDT Tue Sep 2 2025

.KEY MESSAGES...

- Hot temperatures this week (especially through Wednesday and
  Thursday), locally near 100, with major to locally extreme
  HeatRisk. Record high temperatures for September possible for
  multiple locations.

- Breezy northeast winds for Idaho and portions of the Columbia
  Basin Thursday evening into Friday.

&&

.SYNOPSIS...
High temperatures will climb into the upper 90s to near 100
degrees through much of the work week.

&&

.DISCUSSION...
HOT WEATHER WITH WIDESPREAD MAJOR HEATRISK...

A strong ridge will lead to record heat and dry conditions
across the Inland NW for the next few days. Similar
temperatures to today are expected again for Wednesday, around
20 degrees above daily normals! Try to avoid or moderate
activities that could lead to heat-related illnesses.

In addition, critical fire weather conditions are likely across
the central Cascades of eastern WA as unstable conditions are
combined with the hot and dry weather. Areas of smoke/haze are
likely to continue for the next several days as well, leading
to worsening air quality for many locations.

`Cooler` conditions look to return by the weekend as the ridge
breaks down and low pressure develops across the Pacific NW.
Shower chances to return as well for the weekend and early next
week, though significant widespread rain amounts don`t look
likely at this time. Something to watch over the coming days.
/KD

&&

.AVIATION...
06Z TAFS: VFR conditions will prevail. Some airfields in the
Cascades, northern Washington, and northern Idaho may experience
periods of MVFR conditions from smoke from local fires.
Otherwise, light winds and VFR conditions to prevail through the
24 hr TAF period.

FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS:
Low confidence in MVFR or worse conditions in smoke developing
at any TAF sites.

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

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        64 100  64  96  62  94 /   0   0   0   0   0   0
Coeur d`Alene  65  99  64  95  62  94 /   0   0   0   0   0   0
Pullman        61  97  62  94  59  93 /   0   0   0   0   0   0
Lewiston       70 103  70 100  68  99 /   0   0   0   0   0   0
Colville       55 100  54  97  52  94 /   0   0   0   0   0   0
Sandpoint      59  96  58  91  55  89 /   0   0   0   0   0   0
Kellogg        69  97  67  92  62  92 /   0   0   0   0   0   0
Moses Lake     61 102  63  99  64  96 /   0   0   0   0   0   0
Wenatchee      72 102  74  99  71  96 /   0   0   0   0   0   0
Omak           68 104  68 100  67  97 /   0   0   0   0   0   0

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
WA...Heat Advisory until 8 PM PDT Thursday for Central Chelan
     County-Northeast Mountains-Okanogan Highlands-Spokane
     Area-Upper Columbia Basin-Washington Palouse-Waterville
     Plateau-Western Okanogan County.
     Extreme Heat Warning until 8 PM PDT Thursday for Lower
     Garfield and Asotin Counties-Moses Lake Area-Okanogan
     Valley-Wenatchee Area.
     Air Quality Alert until 5 PM PDT Friday for Moses Lake Area-
     Northeast Mountains-Spokane Area-Upper Columbia Basin-
     Waterville Plateau.
     Red Flag Warning until 9 PM PDT Thursday for East Washington
     Central Cascades (Zone 696).
ID...Heat Advisory until 8 PM PDT Thursday for Central Panhandle
     Mountains-Coeur d`Alene Area-Idaho Palouse-Lewis and
     Southern Nez Perce Counties-Northern Panhandle.
     Extreme Heat Warning until 8 PM PDT Thursday for Lewiston Area.

&&

$$