136  
FXUS65 KGGW 200927  
AFDGGW  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE GLASGOW MT  
327 AM MDT THU SEP 20 2018  
   
DISCUSSION
 
 
RAIN, STEADY AT TIMES, WILL CONTINUE TODAY WITH PATCHY FOG A  
CONCERN AS WELL. ALL TOLD, MUCH OF THE CWA REMAINS ON TRACK TO  
PICK UP BETWEEN 0.25" AND 0.75" OF QPF IN GENERAL BEFORE  
PRECIPITATION WINDS DOWN FROM WEST TO EAST THIS EVENING AND  
TONIGHT. AS THIS WEATHER SYSTEM MAKES PROGRESS DOWNSTREAM OF THE  
CWA, TEMPERATURES MAY COOL ENOUGH ALONG THE IMMEDIATE CANADIAN  
BORDER FOR A MIX WITH SNOW, THOUGH DO NOT EXPECT ACCUMULATIONS  
WITH WARM GROUND TEMPERATURES.  
 
FRIDAY AND SATURDAY WILL OFFER DRY BUT CONTINUED COOL WEATHER  
CONDITIONS AS AN UPPER RIDGE BUILDS ACROSS THE REGION. EXPECT THAT  
THE NEXT UPPER LEVEL DISTURBANCE WILL APPROACH ON SUNDAY WITH A  
CHANCE FOR SHOWERS ACROSS MOST OF NORTHEAST MONTANA. AT THIS TIME,  
IT DOES LOOK AS THOUGH THERE WILL BE MORE LIMITED MOISTURE  
AVAILABLE WITH THIS SECOND SYSTEM, BUT SOME PLACES COULD PICK UP  
ON EITHER SIDE OF 0.10" QPF WHERE THE STEADIEST SHOWERS OCCUR.  
 
FOLLOWING THE WEEKEND, THE 00Z MODELS OFFER THEIR USUAL GROWING  
DIFFERENCES AT LARGER TIME SCALES. THUS, TRENDED THE FORECAST  
TOWARD CONSENSUS BLENDS FOR NOW. MALIAWCO  
 

 
   
AVIATION
 
 
FLIGHT CATEGORY: MVFR TO IFR CIGS AND VSBYS ARE EXPECTED TO  
PREVAIL, ESPECIALLY WITH THE STEADIEST RAINFALL.  
 
DISCUSSION: RAIN WILL CONTINUE, STEADY AT TIMES TODAY. ASSOCIATED  
LOW CEILINGS AND REDUCED VISIBILITY COULD IMPACT FLIGHT  
CONDITIONS. PATCHY FOG COULD ALSO LEAD TO REDUCED VISIBILITY, EVEN  
AT TIMES WHEN THE RAINFALL LETS UP IN INTENSITY.  
 
WIND: EAST TO NORTHEAST WINDS WILL GENERALLY RANGE BETWEEN 5 AND  
15 KTS.  
 
MALIAWCO  
 

 
   
GLASGOW WATCHES/WARNINGS/ADVISORIES
 
NONE.  
 

 
 

 
 
WEATHER.GOV/GLASGOW  
 
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