614  
FXUS63 KGRB 171134  
AFDGRB  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE GREEN BAY WI  
634 AM CDT WED OCT 17 2018  
 
UPDATED AVIATION PORTION FOR 12Z TAF ISSUANCE  
   
SHORT TERM...TODAY...TONIGHT
 
AND THURSDAY  
ISSUED AT 333 AM CDT WED OCT 17 2018  
 
A SHORT-WAVE TROF AND MARGINAL LAKE-ENHANCEMENT WILL BRING  
SCATTERED SNOW SHOWERS TO FAR NORTHERN WI THROUGH ABOUT MIDDAY. A  
DUSTING TO A HALF INCH OF SNOW IS POSSIBLE NORTH OF HIGHWAY 8,  
WITH UP TO AN INCH OVER FAR NORTHERN VILAS COUNTY. MOSTLY CLOUDY  
SKIES WILL GIVE WAY TO DECREASING CLOUDS AS HIGH PRESSURE PUSHES  
INTO THE REGION IN THE AFTERNOON. WEST TO NORTHWEST WINDS WILL  
GUST TO 25 TO 30 MPH BEFORE DIMINISHING LATE IN THE DAY. HIGH  
TEMPERATURES WILL BE MUCH COOLER, RANGING FROM THE MIDDLE TO UPPER  
30S NORTHWEST TO THE LOWER TO MIDDLE 40S SOUTHEAST.  
 
HIGH PRESSURE, CLEAR SKIES AND LIGHT WINDS SHOULD ALLOW  
TEMPERATURES TO DROP INTO THE UPPER TEENS AND 20S TONIGHT.  
 
ON THURSDAY, GUSTY SOUTHWEST WINDS AND SUNNY SKIES WILL ALLOW  
TEMPERATURES TO WARM WELL INTO THE 50S AT MOST LOCATIONS.  
   
LONG TERM
 
THURSDAY NIGHT THROUGH TUESDAY  
ISSUED AT 333 AM CDT WED OCT 17 2018  
 
EXPECT BELOW NORMAL TEMPERATURES AND DRY CONDITIONS FOR MOST OF  
THIS FORECAST PERIOD. THE WARMEST AND WETTEST CONDITIONS WILL BE  
LATE THIS WEEK AS A 500 MB LOW EJECTS OUT OF THE SOUTHWEST CONUS,  
RESULTING IN A PERIOD OF SOUTHWEST FLOW ALOFT AND SOUTHERLY  
SURFACE WINDS AHEAD OF AN APPROACHING COLD FRONT. HIGH  
TEMPERATURES ON FRIDAY SHOULD BE NEAR NORMAL BUT SHOWERS ARE  
POSSIBLE AS THE MID LEVEL TROUGH AND COLD FRONT PASS.  
PRECIPITATION IS LIKELY ON SATURDAY AS A SECONDARY COLD FRONT AND  
MID LEVEL SHORT WAVE MOVE ACROSS THE STATE. PRECIPITATION SHOULD  
BE IN THE FORM OF SNOW ACROSS THE NORTH AND RAIN FROM THE FOX  
VALLEY EAST TO LAKE MICHIGAN. THE REST OF THE FORECAST AREA WILL  
SEE RAIN, SNOW OR A MIX. THERE IS STILL A CHANCE FOR LIGHT SNOW IN  
FAR NORTH-CENTRAL WISCONSIN SATURDAY NIGHT IN COLD CYCLONIC FLOW  
BOTH AT THE SURFACE AND ALOFT. A SURFACE HIGH PRESSURE SYSTEM AND  
WEAK MID LEVEL TROUGH SHOULD KEEP THE AREA DRY FOR THE REST OF THE  
WEEKEND INTO EARLY NEXT WEEK.  

 
   
AVIATION
 
FOR 12Z TAF ISSUANCE  
ISSUED AT 630 AM CDT WED OCT 17 2018  
 
SCATTERED SNOW SHOWERS AND ASSOCIATED MVFR CONDITIONS OVER FAR  
NORTHERN WI SHOULD COME TO AN END BY MIDDAY. SKIES SHOULD CLEAR  
DURING THE MID TO LATE AFTERNOON AS HIGH PRESSURE BUILDS IN FROM  
THE WEST. GUSTY NORTHWEST WINDS WILL DIMINISH BY SUNSET.  
 

 
   
GRB WATCHES/WARNINGS/ADVISORIES
 
 
NONE.  

 
 

 
 
SHORT TERM.....KIECKBUSCH  
LONG TERM......MG  
AVIATION.......KIECKBUSCH  
 
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