410
FXUS66 KOTX 210540
AFDOTX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WA
1040 PM PDT WED AUG 20 2025
KEY MESSAGES
- DRY AND BREEZY SOUTHWEST WINDS THROUGH WEDNESDAY EVENING WITH
ELEVATED FIRE WEATHER CONDITIONS.
- WARM AND DRY THROUGH THE WEEKEND AND INTO NEXT WEEK WITH MUCH
OF CENTRAL WA AND THE L-C VALLEY IN AREAS OF MAJOR HEATRISK
WITH ISOLATED AREAS OF EXTREME HEATRISK.
SYNOPSIS
WINDS WILL BE BREEZY THROUGH WEDNESDAY EVENING WITH ELEVATED
FIRE WEATHER CONDITIONS. THEN A PERSISTENT RIDGING PATTERN WILL
LEAD TO A WARMING AND DRYING TREND ACROSS THE REGION THURSDAY
INTO NEXT WEEK.
DISCUSSION
WEDNESDAY EVENING: BREEZY WESTERLY WINDS WILL CONTINUE THROUGH THE
CASCADE GAPS AND ACROSS THE COLUMBIA BASIN INTO THE EVENING
HOURS, THEN WILL SUBSIDE AFTER SUNSET.
THURSDAY THROUGH TUESDAY: A WARMING AND DRYING TREND WILL PREVAIL
FROM THURSDAY ONWARD AS A RIDGE OF HIGH PRESSURE AMPLIFIES OVER THE
REGION. TEMPERATURES WILL PEAK SATURDAY THROUGH TUESDAY WITH
AFTERNOON HIGHS IN THE MID 90S TO LOW 100S AND LIMITED OVERNIGHT
RELIEF WITH LOWS ONLY DROPPING INTO THE MID 60S TO MID 70S. AN
EXTREME HEAT WATCH HAS BEEN ISSUED FOR SATURDAY AFTERNOON THROUGH
TUESDAY EVENING ACROSS THE COLUMBIA BASIN, OKANOGAN VALLEY, METHOW
VALLEY, AND L-C VALLEY. AVOIDING STRENUOUS OUTDOOR ACTIVITIES AND
CONSUMING PLENTY OF WATER AND ELECTROLYTES WILL BE IMPORTANT TO
PROTECT YOURSELF FROM HEAT-RELATED ILLNESSES. PUMPKIN SPICE MAY BE
RETURNING SOON, BUT SUMMER IS NOT OVER. /FEWKES
AVIATION
06Z TAFS: AN UPPER LEVEL RIDGE WILL BUILD OVER THE PACIFIC
NORTHWEST PROMOTING CLEAR SKIES WITH VFR CONDITIONS AND
LIGHT TERRAIN DRIVEN WINDS.
FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: HIGH CONFIDENCE
FOR CONDITIONS TO REMAIN VFR.
-----------------------
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 84 54 86 54 91 58 / 0 0 0 0 0 0
COEUR D'ALENE 84 54 86 55 91 58 / 0 0 0 0 0 0
PULLMAN 80 51 85 51 92 54 / 0 0 0 0 0 0
LEWISTON 90 60 93 61 98 63 / 0 0 0 0 0 0
COLVILLE 85 45 86 46 90 48 / 0 0 0 0 0 0
SANDPOINT 82 49 84 51 89 53 / 0 0 0 0 0 0
KELLOGG 81 57 84 58 90 60 / 0 0 0 0 0 0
MOSES LAKE 87 53 89 55 94 60 / 0 0 0 0 0 0
WENATCHEE 85 60 89 63 93 68 / 0 0 0 0 0 0
OMAK 88 55 89 57 93 60 / 0 0 0 0 0 0
OTX WATCHES/WARNINGS/ADVISORIES
WA...EXTREME HEAT WATCH FROM SATURDAY AFTERNOON THROUGH TUESDAY
EVENING FOR CENTRAL CHELAN COUNTY-LOWER GARFIELD AND
ASOTIN COUNTIES-MOSES LAKE AREA-OKANOGAN VALLEY-UPPER
COLUMBIA BASIN-WATERVILLE PLATEAU-WENATCHEE AREA-WESTERN
OKANOGAN COUNTY.
ID...EXTREME HEAT WATCH FROM SATURDAY AFTERNOON THROUGH TUESDAY
EVENING FOR LEWISTON AREA.
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