625  
FXUS66 KOTX 241818  
AFDOTX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE SPOKANE WA  
1018 AM PST SAT FEB 24 2018  
   
SYNOPSIS
 
 
A SERIES OF STORM SYSTEMS WILL IMPACT THE INLAND NORTHWEST THIS  
WEEKEND INTO EARLY NEXT WEEK, WITH THE POTENTIAL FOR MORE SNOW,  
BREEZY CONDITIONS AND CONTINUED BELOW NORMAL TEMPERATURES FOR MOST  
LOCATIONS. A PARTICULARITY STRONG YET MILD STORM LOOKS POSSIBLE  
BY THE END OF NEXT WEEK.  
 

 
   
DISCUSSION
 
 
MORNING UPDATE: BANDS OF MODERATE TO HEAVY SNOW PRODUCING 1-2"/HR  
ARE IMPACTING SOUTHEASTERN WA AND THE LOWER IDAHO PANHANDLE. THERE  
IS GOOD AGREEMENT WITH MORNING MODELS THAT BANDS WILL REMAIN  
INTENSE FOR THE NEXT 1-2 HOURS THEN BEGIN TO WEAKEN IN INTENSITIES  
AND DRIFT SOUTHEAST AS THE MIDLEVEL SHORTWAVE EJECTS TO THE  
SOUTHEAST. THE BLUE MOUNTAINS AND CAMAS PRAIRIE WILL EXPERIENCE  
SNOW SHOWERS INTO THE EVENING. STEADY WINDS OF 8 TO 15 MPH WITH  
GUSTS NEAR 20 MPH ARE BLOWING ACROSS THE CAMAS PRAIRIE AND  
PALOUSE CREATING PROBLEMS WITH DRIFTING SNOW. MOTORISTS TRAVELING  
ALONG SECTIONS OF US95 AND HWY195 SHOULD BE PREPARED FOR SLOW  
TRAVEL AND AREAS OF REDUCED VISIBILITY AT TIMES. /SB  
 

 
   
AVIATION
 
 
18Z TAFS: BANDS OF MODERATE TO LOCALLY HEAVY SNOW WILL DRIFT SOUTH  
THROUGH SE WA AND N ID 18-20Z. IFR/LIFR CONDITIONS HAVE REPORTED  
UNDER THESE BANDS. THESE BANDS WILL WEAKEN BUT LIGHT SNOW WILL BE  
SLOW TO DEPART TO THE SOUTHEAST...EXITING SOUTH OF KLWS AROUND  
03Z. THIS WILL LEAD TO MIX OF MVFR/VFR CONDITIONS WITH A SLOW  
IMPROVEMENT 20-00Z. KPUW HAS RECEIVED 3-4 INCHES ALREADY AND  
STEADY WINDS WILL RESULT IN BLOWING AND DRIFTING SNOW WHICH MAY  
CONTINUE TO IMPACT VISIBILITY EVEN AS SNOW DECREASES. NEXT WINTER  
STORM TO ARRIVE OVERNIGHT BRINGING STRONG WINDS AND SNOW BACK TO  
THE EASTERN TERMINALS ALONG WITH THE NEXT ROUND OF RESTRICTIONS.  
MAY BE ADDING LLWS FOR 8-12Z BEFORE 00Z TAF ISSUANCE AS 40-50KT  
LLJ DEVELOPS FROM KPUW TO KGEG. /SB  
 

 
   
PRELIMINARY POINT TEMPS/POPS
 
 
SPOKANE 32 28 39 20 35 22 / 20 10 70 20 10 0  
COEUR D'ALENE 32 26 39 19 35 20 / 40 30 80 30 10 10  
PULLMAN 32 27 40 22 34 20 / 100 30 90 60 10 0  
LEWISTON 37 32 47 24 41 21 / 80 20 40 40 10 0  
COLVILLE 33 23 40 16 36 20 / 20 20 70 10 10 10  
SANDPOINT 32 25 37 20 34 21 / 30 50 100 30 10 10  
KELLOGG 28 24 33 21 32 19 / 90 60 100 70 30 10  
MOSES LAKE 39 30 50 23 44 26 / 10 10 10 10 0 0  
WENATCHEE 36 30 46 22 43 25 / 10 10 40 20 0 10  
OMAK 34 23 42 16 38 22 / 10 20 30 10 0 10  
 

 
   
OTX WATCHES/WARNINGS/ADVISORIES
 
 
ID...WINTER WEATHER ADVISORY UNTIL 4 PM PST THIS AFTERNOON FOR LEWIS  
AND SOUTHERN NEZ PERCE COUNTIES-LEWISTON AREA.  
 
WINTER WEATHER ADVISORY UNTIL 1 PM PST THIS AFTERNOON FOR COEUR  
D'ALENE AREA-IDAHO PALOUSE.  
 
WINTER WEATHER ADVISORY UNTIL 4 PM PST THIS AFTERNOON FOR  
CENTRAL PANHANDLE MOUNTAINS-NORTHERN PANHANDLE.  
 
WA...WINTER WEATHER ADVISORY UNTIL 4 PM PST THIS AFTERNOON FOR LOWER  
GARFIELD AND ASOTIN COUNTIES.  
 
WINTER WEATHER ADVISORY UNTIL 1 PM PST THIS AFTERNOON FOR  
SPOKANE AREA-WASHINGTON PALOUSE.  
 
WINTER WEATHER ADVISORY UNTIL 4 PM PST THIS AFTERNOON FOR  
NORTHEAST BLUE MOUNTAINS.  
 
WINTER WEATHER ADVISORY UNTIL 1 PM PST THIS AFTERNOON FOR  
NORTHEAST MOUNTAINS.  
 

 
 

 
 
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