143
FXUS66 KOTX 071142
AFDOTX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WA
442 AM PDT MON SEP 7 2026
KEY MESSAGES
- COOL AND SHOWERY WEATHER EXPECTED THROUGH MONDAY WITH ISOLATED
THUNDERSTORMS.
- A WARMING AND DRYING TREND RETURNS AROUND THE MIDDLE OF NEXT
WEEK.
SYNOPSIS
ACTIVE WEATHER STICKS AROUND FOR LABOR DAY 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
TODAY AND TONIGHT: THE LOW IS CURRENTLY POSITIONED OVER CENTRAL
WASHINGTON AND WILL CONTINUE TO SLIDE EAST THROUGH MONDAY. FOR
MONDAY, PRECIP CHANCES WILL DECREASE THROUGH DAY AS DRIER AIR
FILLS IN BEHIND THE THE EXITING SYSTEM FROM WEST TO EAST. PRECIP
CHANCES WILL BE HIGHEST OVER THE IDAHO PANHANDLE AND NORTHEAST
WASHINGTON. 24-HOUR 25-75 PERCENT PROBABILITIES FOR MONDAY HAVE
THE IDAHO PANHANDLE RANGING FROM 0.3-1 INCH. EXTREME EASTERN
WASHINGTON, INCLUDING SPOKANE AND PULLMAN, RANGES FROM 0-0.4
INCHES. THE CENTRAL BASIN AND CASCADES HAS ONLY REACHES A FEW
HUNDREDTHS. WINDS WILL INCREASE SOME MONDAY. WEST WINDS OF 10-15
MPH WITH GUSTS OF 15 TO 25 MPH WILL BE POSSIBLE, ESPECIALLY THE
UPPER COLUMBIA BASIN, PALOUSE AND THE SPOKANE/CDA AREA. HIGHS
MONDAY WILL BE IN THE UPPER 50S AND 60S OVER THE EAST THIRD OF
WA AND ID, WHILE CENTRAL WA WILL SEE UPPER 60S AND 70S.
TUESDAY THROUGH THURSDAY: THE ENSEMBLES ARE IN DECENT AGREEMENT
FOR THE EXTENDED. A FLAT RIDGE PATTERN WILL SET UP OVER THE
REGION AS THE LOW EXITS. IT WILL LEAD TO DRY, WARMING TREND
THROUGH THE END OF THE WEEK. WINDS WILL BE MAIN CONCERN
WEDNESDAY AND THURSDAY. FOR WEDNESDAY, SOUTH TO NORTH WINDS WILL
BRING BREEZY CONDITIONS ACROSS THE WATERVILLE PLATEAU AND
OKANOGAN VALLEY. SUSTAINED WINDS WILL BE IN THE TEENS WITH GUSTS
UP TO 25 MPH. FOR THURSDAY, THE WINDS SPREAD ACROSS THE BASIN
WITH SUSTAINED IN THE TEENS WITH GUSTS UP TO 30 MPH. LOCALLY
STRONGER WINDS ARE POSSIBLE OVER THE WATERVILLE PLATEAU WITH
GUSTS UP TO 40 MPH. BLOWING DUST COULD BE A CONCERN IN THE AREA.
PRECIP CHANCES WILL BE LESS THAN 10 PERCENT THROUGH THURSDAY.
HIGHS WILL BE IN THE 70S FOR TUESDAY AND CLIMB INTO THE UPPER
70S AND 80S FOR WEDNESDAY AND THURSDAY. OVERNIGHT LOWS WILL BE
IN THE 40S TO LOW 50S.
FRIDAY AND SATURDAY: ANOTHER TROUGH WILL DROP IN FROM BC FRIDAY
AS REMNANTS OF TROPICAL SYSTEM BEGIN TO PRESS MOISTURE INTO THE
PACIFIC NORTHWEST. IT IS LEADING TO INCREASING PRECIP CHANCES
GOING INTO THE WEEKEND. NBM THUNDERSTORM POTENTIAL IS AROUND
10-20 PERCENT ACROSS THE INLAND NORTHWEST WITH HIGHEST PERCENTS
OVER NORTHEAST WA AND IDAHO PANHANDLE LATE FRIDAY AND SATURDAY.
IT IS TOO EARLY TO HAVE MUCH CONFIDENCE. HIGHS WILL TREND COOLER
FOR THE WEEKEND WITH UPPER 60S AND 70S EXPECTED. LOWS EXPECTED
TO BE IN THE UPPER 30S AND 40S. /JDC
AVIATION
12Z TAFS: SCATTERED SHOWERS ARE WRAPPING AROUND A LOW
ENCOMPASSING THE INLAND NORTHWEST EARLY THIS MORNING. THIS IS
BRINGING A MIX OF MVFR AND VFR CEILINGS TO THE TAF SITES AND IFR
CEILINGS TO THE NORTH IDAHO TERMINALS, SUCH AS SANDPOINT AND
COLVILLE. EXCEPT THESE CONDITIONS TO THROUGH THE REST OF THE
MORNING WITH ALL TAF SITES TRENDING TO VFR AFTER 17-18Z. SHOWER
COVERAGE THEN BEGINS TO SHIFT EASTWARD THIS AFTERNOON AND
EVENING. ISOLATED THUNDERSTORMS ARE POSSIBLE WITH AFTERNOON
SHOWERS, PRIMARILY ACROSS FAR NORTH IDAHO. LATE MORNING WINDS
WILL BE IN THE TEENS WITH GUSTS NEAR 20 KTS FOR MOST SITES AND
CONTINUE THROUGH THE AFTERNOON.
FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: BETWEEN 12-18Z
MONDAY, HREF PROBABILITY RANGE FROM 30-60% FOR MVFR CONDITIONS
FOR KGEG/KSFF/KCOE/KPUW. HIGH CONFIDENCE FOR VFR CONDITIONS BY
THE LATE MORNING AND AFTERNOON.
-----------------------
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 68 49 72 48 78 51 / 60 20 10 0 0 0
COEUR D'ALENE 63 48 70 47 77 50 / 80 30 10 0 0 0
PULLMAN 64 42 69 43 77 47 / 40 0 0 0 0 0
LEWISTON 71 50 76 52 83 56 / 40 10 0 0 0 0
COLVILLE 69 42 75 41 80 44 / 30 30 10 0 0 0
SANDPOINT 59 44 67 43 74 46 / 80 60 30 0 0 0
KELLOGG 58 47 66 46 74 49 / 100 30 20 0 0 0
MOSES LAKE 75 47 77 48 83 52 / 10 10 0 0 0 0
WENATCHEE 76 53 79 57 85 61 / 0 0 0 0 0 0
OMAK 76 50 79 51 83 55 / 10 10 0 0 0 0
OTX WATCHES/WARNINGS/ADVISORIES
WA...NONE.
ID...NONE.
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