254  
FXUS63 KOAX 162318  
AFDOAX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE  
518 PM CST SUN DEC 16 2018  
   
SHORT TERM
 
(TONIGHT THROUGH WEDNESDAY)  
ISSUED AT 255 PM CST SUN DEC 16 2018  
 
WITH TEMPS PUSHING INTO THE LOW 40S OVER SNPW PACKED AREAS NORTH,  
EXPECT SOME FOG TO DEVELOP OVER PORTIONS OF NORTHEAST NE AND MOST OF  
SOUTHWEST IA. ALSO, NOT OUT OF THE REALM THAT LOCALLY DENSE FOG MAY  
DEVELOP OVER SOUTHWEST IA EARLY BY EARLY MONDAY MORNING.  
 
LATEST MODELS INDICATE GOING FORECAST IS STILL ON TRACK. THUS ONLY  
MINOR ADJUSTMENTS NEEDED.  
 
LARGE SCALE FLOW WILL REMAIN PROGRESSIVE THE NEXT SEVERAL DAYS WITH  
AN UPPER LEVEL RIDGE PREVAILING OVER THE CENTRAL CONUS THROUGH EARLY  
NEXT WEEK QUICKLY FOLLOWED BY A HIGHLY AMPLIFIED TROF MOVING IN BY  
WEDNESDAY. NEVERTHELESS ANY THERMAL ADVECTION WILL BE WEAK AT BEST  
LEADING TO ONLY MODEST TEMPERATURE FLUCTUATIONS.  
 
WITH INCREASING HEIGHTS EXPANDING ACROSS THE REGION, HIGHS IN THE  
MID 50S SHOULD BE ATTAINABLE OVER PORTIONS OF SOUTHEAST NE MONDAY  
AFTERNOON WITH MID/UPPER 40S ELSEWHERE. FOR TUESDAY AND  
WEDNESDAY, HIGHS JUST A BIT COOLER IN THE LOW/MID 40S.  
 
THERE STILL APPEARS TO BE A SLIGHT CHANGE OF SOME LIGHT RAIN  
WEDNESDAY AFTERNOON OVER EXTREME SOUTHEAST NE AND MOST OF SOUTHWEST  
IA IN THE VICINITY OF A SURFACE TROF. MODELS THOUGH CONTINUE TO SHOW  
BULK OF ANY PRECIP WILL BE FOUND GENERALLY OVER EASTERN KS/IA/MO.  
   
LONG TERM
 
(WEDNESDAY NIGHT THROUGH SUNDAY)  
ISSUED AT 255 PM CST SUN DEC 16 2018  
 
RATHER MILD CONDITIONS FOR THIS TIME OF YEAR IS STILL BEING  
ADVERTISED BY THE MEDIUM RANGE MODELS THROUGH THE EXTENDED PERIODS.  
ABOVE NORMAL HIGHS ARE ON TAP HEADING INTO NEXT WEEKEND WITH LOW/MID  
40S PREVAILING.  
 

 
   
AVIATION
 
(FOR THE 00Z TAFS THROUGH 00Z MONDAY EVENING)  
ISSUED AT 516 PM CST SUN DEC 16 2018  
 
PATCHY FOG EXPECTED TO DEVELOP LATER TONIGHT OVER ERN NE, THUS  
HAVE INCLUDED TEMPO GROUPS TO REFLECT THIS. OTHERWISE VFR  
CONDITIONS WILL PREVAIL THRU THE FCST PD.  
 

 
   
OAX WATCHES/WARNINGS/ADVISORIES
 
 
NE...NONE.  
IA...NONE.  

 
 

 
 
SHORT TERM...DEE  
LONG TERM...DEE  
AVIATION...DEE  
 
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