363  
FXUS63 KILX 250006  
AFDILX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE LINCOLN IL  
606 PM CST MON NOV 24 2014  
   
SHORT TERM
 
(TONIGHT)  
ISSUED AT 317 PM CST MON NOV 24 2014  
 
WIND ADVISORY OVER EASTERN IL THIS AFTERNOON WILL BE CANCELLED EARLY  
AS WSW WINDS HAVE SLOWLY DIMINISHED BELOW ADVISORY CRITERIA BY MID  
AFTERNOON, AS BEST 3 HOURLY PRESSURE RISES HAVE SHIFTED NE OF IL.  
SUSTAINED WIND SPEEDS ARE DOWN TO 20-29 MPH WITH GUSTS OF 30 TO 39  
MPH AT 2 PM. STRONG AND DEEPENING 975 MB LOW PRESSURE ALONG THE QUEBEC  
AND ONTARIO PROVINCE LINE WILL LIFT NE ACROSS QUEBEC TONIGHT WITH  
VERY TIGHT PRESSURE GRADIENT RELAXING TONIGHT OVER IL, AS HIGH  
PRESSURE OVER THE ROCKIES DRIFTS EAST INTO THE GREAT PLAINS TONIGHT.  
WSW WINDS WILL CONTINUE TO DIMINISH TO 10 TO 20 MPH THIS EVENING AND  
GUSTS OF 20 TO 30 MPH THIS EVENING. AREA OF LIGHT SNOW AND FLURRIES  
OVER IA AND NORTHERN IL TO PIVOT ACROSS AREAS NORTH OF I-72 INTO  
THIS EVENING BUT LITTLE OR NO ADDITIONAL ACCUMULATIONS. AREAS FROM  
PEORIA NORTH HAD A HALF TO 1 INCH OF SNOW THIS MORNING WITH JUST A  
DUSTING FROM LINCOLN SOUTH. CYCLONIC FLOW LINGERS OVER CENTRAL IL  
TONIGHT AND THIS SHOULD KEEP THE LOW CLOUDS AROUND WITH MOSTLY  
CLOUDY TO OVERCAST SKIES CONTINUING. TEMPS CURRENTLY ARE MOSTLY IN  
THE LOW TO MID 30S OVER CENTRAL IL (GALESBURG DOWN TO 28F) WHILE  
40-45F SOUTHEAST OF I-70 IN SOUTHEAST IL. LOWS TONIGHT TO RANGE FROM  
NEAR 20F NW OF THE IL RIVER TO THE UPPER 20S IN SOUTHEAST IL.  
 

 
   
LONG TERM
 
(TUESDAY THROUGH MONDAY)  
ISSUED AT 317 PM CST MON NOV 24 2014  
 
HIGH PRESSURE WILL BUILD INTO THE REGION AND BRING AND DRY FORECAST  
FOR TUE AND TUE NIGHT. THEN A CLIPPER SYSTEM WILL QUICKLY MOVE  
THROUGH THE AREA AND BRING A SHOT OF PCPN DURING THE DAY. PCPN WILL  
BEGIN IN THE MORNING IN THE WEST AND THEN MOVE EASTWARD ACROSS THE  
CWA AND COVER THE WHOLE CWA BY AFTERNOON. PCPN TYPE WILL BE A TRICKY  
FORECAST AS WARMER AIR WILL BE ADVECTED INTO THE AREA AHEAD OF THE  
LOW PRESSURE AREA AND THIS WILL CREATE A MIX OF RAIN AND SNOW ACROSS  
THE AREA AS THE DAY PROGRESSES. SO, LOOKS LIKE SNOW BEGIN ACROSS THE  
AREA AND THEN GRADUALLY BECOME MIXED WITH SNOW DURING THE LATE  
MORNING. DURING THE AFTERNOON, THE MIX OF RAIN AND SNOW WILL MOVE  
NORTHWARD, WHILE THE PCPN BECOMES ALL RAIN IN THE SOUTH AND  
SOUTHEAST. TOWARD THE END OF THE AFTERNOON AS THE TEMPS DECREASE,  
THE RAIN AND SNOW LINE WILL SHIFT SOUTH WITH ALL SNOW BEING IN THE  
NORTH.  
 
BEYOND WED, A DRY FORECAST LOOKS TO BE IN ORDER FOR THE REST OF THE  
WEEK AS HIGH PRESSURE BUILDS INTO THE REGION AND THE UPPER LEVEL  
FLOW BECOMES MORE ZONAL. THEN A FRONT DROPS THROUGH THE AREA OVER  
THE WEEKEND AND THEN STALLS ACROSS SOUTHERN ILLINOIS. THIS STALLED  
FRONT WILL BRING ANOTHER CHANCE OF PCPN FOR SUNDAY AND SUN NIGHT.  
 
TEMPS OVERALL WILL BE BELOW NORMAL TOMORROW THROUGH THURSDAY, BUT  
BEGIN TO WARM BACK UP DURING THE END OF THE WEEK AND THROUGH THE  
WEEKEND. WARMEST TEMPS LOOK TO BE SAT AND SUN WHEN HIGHS REACH INTO  
THE 50S OVER THE WHOLE AREA FOR SAT AND THE 40S FOR MOST OF THE AREA  
FOR SUNDAY.  
 

 
   
AVIATION
 
(FOR THE 00Z TAFS THROUGH 00Z TUESDAY EVENING)  
ISSUED AT 600 PM CST MON NOV 24 2014  
 
A BAND OF MIXED FREEZING DRIZZLE AND SNOW MOVED ACROSS OUR  
NORTHERN TERMINALS OVER THE LAST COUPLE OF HOURS, AND ADDITIONAL  
BANDS OF MIXED PRECIP COULD AFFECT THE SAME AREAS THROUGH 03Z.  
NUMEROUS ACCIDENTS HAVE BEEN REPORTED ON MANY ROADS INCLUDING  
I-74 NEAR GALESBURG AND I-39 FROM EL PASO AND NORTH TO TONICA.  
 
MVFR CLOUDS WILL LIKELY HOLD STEADY OVER THE NEXT 24 HOURS, WITH  
PRECIPITATION GENERALLY COMING TO AN END BY 06Z.  
 
VERY GUSTY WINDS WILL CONTINUE THROUGH AT LEAST MID-EVENING. GUSTS  
SHOULD END BY 06Z, BUT SUSTAINED WINDS WILL LIKELY REMAIN IN THE  
12-15KT RANGE IN MOST AREAS OVERNIGHT. PIA AND SPI COULD SEE THE  
PRESSURE GRADIENT WEAKEN ENOUGH FOR WIND SPEEDS TO DROP BELOW 10  
KT BEFORE SUNRISE TUESDAY. CLOUD HEIGHTS WILL LIFT TO VFR TUESDAY  
MORNING AFTER SUNRISE AND MIXING INCREASES.  
 

 
   
ILX WATCHES/WARNINGS/ADVISORIES
 
 
NONE.  

 
 

 
 
SHORT TERM...07  
LONG TERM...AUTEN  
AVIATION...SHIMON  
 
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