172
FXUS66 KOTX 032230
AFDOTX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WA
330 PM PDT THU SEP 3 2026
KEY MESSAGES
- COOL AND SHOWERY WEATHER EXPECTED THROUGH LABOR DAY WEEKEND
WITH ISOLATED THUNDERSTORMS.
- A WARMING AND DRYING TREND RETURNS AROUND THE MIDDLE OF NEXT
WEEK.
SYNOPSIS
ACTIVE WEATHER STICKS AROUND THROUGH LABOR DAY WEEKEND WITH
SCATTERED SHOWERS, ISOLATED THUNDERSTORMS, AND COOLER THAN
NORMAL TEMPERATURES. A WARMING AND DRYING TREND COMMENCES AROUND
THE MIDDLE OF NEXT WEEK AS HIGHER PRESSURE RETURNS TO THE
REGION.
DISCUSSION
THURSDAY NIGHT THROUGH MONDAY: A CLOSED UPPER LEVEL LOW
CONTINUES TO SPIN ALONG THE WA/OR COAST, KEEPING THE INLAND
NORTHWEST IN AN ACTIVE PATTERN THROUGH LABOR DAY WEEKEND WITH
PERIODIC SHOWERS AND COOLER THAN NORMAL TEMPERATURES. A
SHORTWAVE PIVOTING AROUND THE LOW THURSDAY EVENING INTO EARLY
FRIDAY WILL BRING A MORE WIDESPREAD SWATH OF PRECIP ACROSS
SOUTHEAST WA AND OVER THE ID PANHANDLE. BY LATER FRIDAY MORNING,
THIS PRECIP WILL WRAP AROUND INTO THE HIGHER TERRAIN OF
NORTHEAST WA AND THE NORTH CASCADES.
SHOWERS PERSIST OVER THE NORTH CASCADES THROUGH FRIDAY AFTERNOON
AND EVENING. MEANWHILE, ADDITIONAL SHOWERS AND THUNDERSTORMS ARE
FORECAST TO DEVELOP OVER SOUTHEAST WA FRIDAY AFTERNOON AS LAPSE
RATES STEEPEN. THE SHOWERS OVER THE SOUTHEAST WILL BE MORE
ISOLATED IN NATURE, WHILE THE SHOWERS OVER THE NORTH CASCADES
WILL BE MORE WIDESPREAD. SATURDAY, SUNDAY, AND MONDAY LOOK TO
BRING MUCH NEEDED PRECIP REGIONWIDE WITH THE ENTIRE AREA
FORECASTED TO RECEIVE MEASURABLE RAINFALL AT SOME POINT DURING
THIS PERIOD.
WINDS WILL BE LIGHTER FRIDAY THAN WHAT WE SAW TODAY, AND
AFTERNOON HIGHS WILL BE IN THE 60S TO LOWER 70S. LOWS WILL BE
RATHER CHILLY FRIDAY AND SATURDAY MORNINGS IN THE UPPER 30S TO
UPPER 40S. THE COLDEST NORTHERN VALLEYS MAY WAKE UP TO PATCHY
FROST.
TUESDAY AND WEDNESDAY: MODELS INDICATE THE PERSISTENT UPPER
LEVEL LOW WILL SHIFT OUT OF THE REGION BY THE MIDDLE OF NEXT
WEEK, ALLOWING WARMER AND DRIER CONDITIONS TO RETURN. EXPECT
HIGHS TO GRADUALLY WARM BACK INTO THE MID 70S TO LOW 80S OVER
THE LATTER HALF OF NEXT WEEK. /FEWKES
AVIATION
18Z TAFS: SHOWERS WITH THE POTENTIAL FOR ISOLATED EMBEDDED
THUNDERSTORMS WILL CONTINUE THROUGH THE 24 TAF PERIOD. EXPECT
OCCASIONAL MVFR CONDITIONS, PARTICULARLY IN AND ADJACENT TO ANY
STORMS. BEST CHANCES FOR TS (MAINLY THIS AFTERNOON) WOULD BE
ACROSS THE CASCADES, NORTHERN MOUNTAINS, AND FAR SE WASHINGTON
INTO THE CENTRAL ID PANHANDLE. WINDS WILL BE BREEZY OUT THE
SOUTH/SOUTHWEST FOR THE COLUMBIA BASIN AND SPOKANE AREA THIS
AFTERNOON.
FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: LOW CONFIDENCE
IN THUNDERSTORMS IMPACTING ANY TAF LOCATION.
-----------------------
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 48 66 46 70 47 72 / 20 30 10 30 10 30
COEUR D'ALENE 46 66 43 70 45 73 / 60 40 10 40 10 40
PULLMAN 45 64 44 68 42 70 / 90 40 10 30 10 20
LEWISTON 53 69 51 73 52 75 / 100 40 30 30 10 30
COLVILLE 43 67 42 69 41 73 / 10 20 0 50 20 30
SANDPOINT 45 64 42 68 44 71 / 40 30 10 50 10 30
KELLOGG 45 62 43 68 46 71 / 80 50 20 40 20 40
MOSES LAKE 46 70 46 72 47 76 / 10 10 0 30 10 10
WENATCHEE 51 69 50 71 54 76 / 10 40 20 40 10 10
OMAK 47 69 47 70 48 74 / 10 30 20 40 20 10
OTX WATCHES/WARNINGS/ADVISORIES
WA...NONE.
ID...NONE.
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