816  
FXUS66 KOTX 101851  
AFDOTX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE SPOKANE WA  
1151 AM PDT FRI OCT 10 2025  
   
KEY MESSAGES
 
 
- BREEZY ACROSS COLUMBIA BASIN AND UP OKANOGAN VALLEY FRIDAY AND  
SATURDAY.  
 
- AREAS OF LIGHT RAIN AND HIGH MOUNTAIN SNOW SATURDAY. MORE  
WIDESPREAD RAIN AND MOUNTAIN SNOW SUNDAY INTO EARLY MONDAY.  
 
- COOLER TEMPERATURES SATURDAY THROUGH NEXT WEEK WITH HIGHS IN  
THE 50S. LOW TEMPERATURES DROPPING INTO THE 20S AND 30S BY  
TUESDAY.  
 

 
   
SYNOPSIS
 
 
CLOUD COVER AND PRECIPITATION CHANCES EXPAND ACROSS THE REGION  
FRIDAY. THE WEEKEND BRINGS BREEZY CONDITIONS, MUCH COOLER  
TEMPERATURES, AND CONTINUED PRECIPITATION WITH SNOW IN THE  
MOUNTAINS.  
 

 
   
DISCUSSION
 
 
TODAY THROUGH SATURDAY NIGHT: A DEEP LOW OFF THE SOUTHERN OREGON  
COAST WILL MOVE EAST TODAY, WITH SOUTHERLY FLOW AHEAD OF THE LOW  
AND INCREASED MID LEVEL MOISTURE PROVIDING AN INCREASING CHANCE  
FOR RAIN SHOWERS. YET WITH A DRY SUB CLOUD LAYER TODAY CHANCES FOR  
MEASURABLE RAIN ARE ONLY 20-40%. THIS CHANGES HEADING INTO TONIGHT  
AS THE LOW PUSHES INLAND ACROSS WESTERN OREGON WITH INCREASED  
LIFT, AND MID LEVEL MOISTURE WITH THE LOW. THE LOW CONTINUES TO  
MOVE EAST INTO EASTERN WASHINGTON SATURDAY BEFORE MOVING SHIFTING  
INTO NORTH IDAHO SATURDAY NIGHT. THIS LOW WILL RESULT IN A COLD  
FRONT PASSING THROUGH THE REGION, WITH WINDS SHIFTING OUT OF THE  
WEST AND SOUTHWEST THIS AFTERNOON INTO THE EVENING, WITH MUCH  
COOLER TEMPERATURES BEHIND THE FRONT FOR SATURDAY AS HIGH  
TEMPERATURES DROP INTO THE 50S TO LOW 60S. SNOW LEVELS ALSO DROP  
TO 5000-6000 FEET SATURDAY NIGHT BUT ANY MOUNTAIN ACCUMULATIONS  
ARE EXPECTED TO BE LIGHT.  
 
SUNDAY THROUGH MONDAY: THE FORECAST GETS MORE INTERESTING DURING  
THIS PERIOD AS AN UPPER TROUGH DROPS SOUTH OUT OF CANADA AND  
INTENSIFIES OVER THE REGION AS A SURFACE LOW SPINS UP ALONG THE  
WA/OR COAST IN THE LEFT EXIT REGION OF AN UPPER LEVEL JET.  
INCREASING PRECIPITATION WITH THE LOW, WILL COMBINE WITH NORTH TO  
NORTHEAST WINDS BRINGING COOLER AIR INTO THE REGION. SNOW LEVELS  
DROP TO AROUND 3000-4000 FEET OVER NORTHERN WASHINGTON, AND 5000  
FEET OVER SE WASHINGTON. FOR THE NORTH ID PANHANDLE, MODELS DROP  
THE SNOW LEVEL AS LOW AS 2000-2500 FEET WHICH MAY RESULT IN WET SNOW  
FOR SOME OF THE HIGHER VALLEYS IN THE N IDAHO PANHANDLE. SEVERAL  
INCHES OF SNOW IS EXPECTED IN THE MOUNTAINS OF NORTHERN WASHINGTON  
AND THE NORTH ID PANHANDLE, AS WELL AS THE CENTRAL PANHANDLE  
MOUNTAINS WHICH MAY IMPACT TRAVEL OVER WASHINGTON, SHERMAN, STEVENS,  
AND LOOKOUT PASSES. THE HEAVIEST PRECIPITATION IS EXPECTED LATE  
SUNDAY AFTERNOON THROUGH EARLY MONDAY. BELOW ARE THE CHANCES OF  
24 HOUR SNOW TOTALS REACHING VARIOUS THRESHOLDS ENDING 5 AM  
MONDAY:  
 
MOUNTAIN PASS CHANCE OF 2+" CHANCE OF 4+" CHANCE OF 8+"  
WASHINGTON 95% 85% 65%  
SHERMAN 85% 55% 10%  
LOOKOUT 40% 15% 1%  
STEVENS 65% 50% 20%  
 
MONDAY NIGHT THROUGH THURSDAY: A QUIETER PATTERN RETURNS AS THE LOW  
DROPS SOUTH OVER CALIFORNIA AND AN UPPER RIDGE BUILDS OFF THE COAST  
PROVIDES A DRY NORTH TO NORTHWEST FLOW OVER THE INLAND NW. IT WILL  
FEEL LIKE FALL AS LOW TEMPERATURES DROP INTO THE 20S AND 30S FOR  
MOST OF THE REGION, AND DAYTIME HIGHS IN THE MID 50S TO LOW 60S.  
JW  
 

 
   
AVIATION
 
 
18Z TAFS: A DEEP UPPER LEVEL LOW PRESSURE SYSTEM SPINNING OFF  
THE OREGON COAST WILL SLOWLY EJECT ACROSS THE INLAND NORTHWEST  
TONIGHT. MOISTURE WILL INCREASE AHEAD OF THE LOW LATE THIS  
AFTERNOON INTO THIS EVENING WITH MID LEVEL CLOUDS AND SHOWER  
CHANCES INCREASING. WEAK INSTABILITY IN THE IDAHO PANHANDLE INTO  
EXTREME EASTERN WASHINGTON MAY ALSO RESULT IN BRIEF THUNDERSTORM  
DEVELOPMENT. SHOWERS WILL INCREASE PRIMARILY OVER THE CASCADE  
CREST AND OVER EXTREME EASTERN WASHINGTON INTO THE IDAHO  
PANHANDLE OVERNIGHT. WESTERLY WINDS INCREASE TONIGHT AND  
CONTINUE INTO SATURDAY WITH GUSTS OF 15-25 KTS POSSIBLE THROUGH  
SATURDAY MORNING. WINDS INCREASE FURTHER INTO SATURDAY  
AFTERNOON. INCREASED BOUNDARY LAYER MOISTURE WILL RESULT IN  
LOWERING CEILINGS FOR KGEG-KSFF-KCOE-KPUW-KLWS. MVFR CONDITIONS  
WITH LOW STRATUS COVER WILL BE POSSIBLE ACROSS NORTHEAST  
WASHINGTON INTO THE IDAHO PANHANDLE FOR SATURDAY MORNING.  
 
FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: HIGH CONFIDENCE  
IN VFR CONDITIONS TODAY. POTENTIAL FOR MVFR CONDITIONS FOR KPUW-  
KGEG-KSFF-KCOE INCREASES AFTER MIDNIGHT UP TO 20% CHANCE THROUGH  
12Z INCREASING TO A 50% CHANCE THEREAFTER THROUGH THE MORNING  
SUNDAY. THERE IS A 10-20% CHANCE FOR THUNDERSTORMS LATE THIS  
AFTERNOON AFTER 23Z IN THE SOUTHERN TO CENTRAL IDAHO PANHANDLE;  
UNLIKELY THAT LIGHTNING WILL OCCUR WITHIN THE VICINITY KLWS-  
KPUW-KCOE AT A LESS THAN A 10% CHANCE TODAY. /SVH  
 
-----------------------  
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 73 43 57 40 50 37 / 30 50 50 80 70 80  
COEUR D'ALENE 74 44 56 41 48 36 / 30 70 60 90 90 90  
PULLMAN 72 41 54 38 48 39 / 30 50 60 90 80 70  
LEWISTON 77 50 59 46 55 43 / 20 50 60 80 70 70  
COLVILLE 74 33 56 29 50 35 / 30 50 70 80 80 90  
SANDPOINT 71 40 53 36 47 33 / 30 80 80 100 90 90  
KELLOGG 76 44 52 41 46 34 / 30 70 80 100 100 90  
MOSES LAKE 73 41 61 40 55 42 / 20 20 30 30 50 80  
WENATCHEE 71 46 61 43 54 40 / 40 30 30 40 50 80  
OMAK 74 43 61 40 54 37 / 20 30 30 50 50 80  
 

 
   
OTX WATCHES/WARNINGS/ADVISORIES
 
 
WA...AIR QUALITY ALERT UNTIL FURTHER NOTICE FOR CENTRAL CHELAN  
COUNTY- OKANOGAN VALLEY-WATERVILLE PLATEAU- WENATCHEE AREA-  
WESTERN CHELAN COUNTY.  
 
ID...NONE.  
 

 
 

 
 
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