539  
FXUS63 KMKX 251651  
AFDMKX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI  
1151 AM CDT FRI SEP 25 2026  
   
KEY MESSAGES
 
 
 
- TEMPERATURES WITHIN A COUPLE DEGREES OF NORMAL OVER THE NEXT  
SEVERAL DAYS  
 
- CHANCES FOR RAIN AND A FEW STORMS RETURN TUESDAY INTO TUESDAY  
NIGHT  
 

 
   
SHORT TERM
 
 
ISSUED 1151 AM CDT FRI SEP 25 2026  
 
THIS AFTERNOON THROUGH SUNDAY:  
 
A WEAK SHORTWAVE WILL EXIT TO THE EAST THIS AFTERNOON, WITH  
UPPER LEVEL RIDGING BRIEFLY MOVING THROUGH THIS AFTERNOON  
THROUGH THE DAY SATURDAY. WITH SURFACE HIGH PRESSURE IN PLACE,  
DRY WEATHER IS EXPECTED THE REMAINDER OF THE DAY THROUGH  
SATURDAY. CLOUDS SHOULD DECREASE FROM THE NORTHEAST LATER TODAY  
INTO TONIGHT UNDER THE INFLUENCE OF THE SURFACE HIGH CENTERED TO  
THE NORTHEAST.  
 
A FEW SHOWERS MAY SNEAK INTO WESTERN PORTIONS OF THE FORECAST  
AREA SATURDAY NIGHT INTO SUNDAY, AS THE UPPER RIDGE SLIDES TO  
THE EAST AND A WEAK SHORTWAVE MOVES THROUGH. MODELS DIFFER ON  
THE STRENGTH OF THIS WAVE AS IT ARRIVES THOUGH, SO THERE IS  
CURRENTLY LOW CONFIDENCE IN PRECIP CHANCES AT THIS TIME.  
 
TEMPERATURES THROUGH THE WEEKEND ARE EXPECTED TO BE WITHIN A  
COUPLE DEGREES OF NORMAL. A COUPLE MODEL SOLUTIONS ARE SHOWING  
LOWS IN THE 30S IN THE EAST SAT NIGHT, BUT CURRENTLY THINKING  
THERE SHOULD BE ENOUGH CLOUD COVER WITH THE APPROACHING  
SHORTWAVE TO KEEP TEMPS FROM FALLING THAT FAR.  
 
DDV  
 

 
   
LONG TERM
 
 
ISSUED 1151 AM CDT FRI SEP 25 2026  
 
MONDAY THROUGH FRIDAY:  
 
UPPER LEVEL RIDGING WILL RETURN FOR MONDAY, WHILE SURFACE HIGH  
PRESSURE LINGERS. SHOULD BE A PLEASANT DAY WITH PARTLY CLOUDY  
SKIES AND HIGHS AROUND 70. AS THE RIDGE HEADS EASTWARD TUESDAY,  
THE DOOR WILL OPEN FOR A RETURN OF DEEPER MOISTURE INTO SOUTHERN  
WISCONSIN. PRECIPITABLE WATER VALUES ARE CURRENTLY EXPECTED TO  
INCREASE TO AROUND 1.5" BY LATER TUESDAY INTO TUESDAY NIGHT.  
A SHORTWAVE MOVING THROUGH LATE IN THE DAY OR OVERNIGHT WILL  
THEN BRING A RETURN OF SHOWER CHANCES TO THE FORECAST AREA. A  
FEW RUMBLES OF THUNDER WILL BE POSSIBLE AS WELL, THOUGH  
INSTABILITY IS LOOKING RATHER WEAK AT THIS TIME.  
 
MODELS ARE MIXED WITH PRECIP CHANCES FOR THE LATTER HALF OF NEXT  
WEEK, DEPENDING ON HOW FAR SOUTH THE DEEPER MOISTURE GETS PUSHED  
AFTER THE TUE/TUE NIGHT SYSTEM ROLLS THROUGH. THERE IS THE  
POTENTIAL FOR QUICK MOISTURE RETURN LATE IN THE WEEK ALONG WITH  
MORE SHOWER CHANCES. CONFIDENCE IS ON THE LOWER END FOR PRECIP  
CHANCES LATE IN THE WEEK GIVEN THE MODEL DIFFERENCES AND THAT  
FACT THAT THIS IS STILL ABOUT A WEEK OUT.  
 
TEMPERATURES ARE EXPECTED TO REMAIN WITHIN A COUPLE DEGREES OF  
NORMAL THROUGH THE EXTENDED FORECAST PERIOD.  
 
DDV  
 

 
   
AVIATION
 
 
ISSUED 1151 AM CDT FRI SEP 25 2026  
 
DRY WEATHER IS EXPECTED THE REMAINDER OF THE DAY THROUGH  
SATURDAY. CLOUDS SHOULD DECREASE FROM THE NORTHEAST LATER TODAY  
INTO TONIGHT UNDER THE INFLUENCE OF SURFACE HIGH CENTERED TO  
THE NORTHEAST. COULD STILL SEE AN MVFR OBSERVATION OR TWO  
THROUGH EARLY TODAY, BUT OTHERWISE THE CEILINGS SHOULD REMAIN  
LARGELY VFR.  
 
LIGHT EASTERLY WINDS TODAY WILL BECOME LIGHT AND VARIABLE THIS  
EVENING INTO TONIGHT. LIGHT SOUTHEAST WINDS ARE THEN EXPECTED ON  
SATURDAY.  
 
DDV  
 

 
   
MARINE
 
 
ISSUED 1151 AM CDT FRI SEP 25 2026  
 
HIGH PRESSURE AROUND 30.3 INCHES WILL LINGER OVER SOUTHERN  
ONTARIO CANADA AND THE GREAT LAKES TODAY AND INTO THE WEEKEND,  
GRADUALLY WEAKENING TO 30.1 INCHES. LIGHT TO MODERATE EAST TO  
SOUTHEAST WINDS SHOULD BRIEFLY BECOME LIGHT AND VARIABLE BY  
MID-AFTERNOON TODAY. NORTHEAST WINDS THEN TAKE OVER THIS  
EVENING, BECOMING EAST TO SOUTHEAST AGAIN BY SATURDAY MORNING.  
PREDOMINANTLY DRY AND QUIET WEATHER IS EXPECTED THROUGH THE  
WEEKEND.  
 
HIGH PRESSURE WILL PROGRESS INTO THE OHIO VALLEY EARLY TUESDAY,  
ALLOWING WINDS TO TURN SOUTH AND INCREASE AS LOW PRESSURE  
APPROACHES FROM THE WEST.  
 
DDV  
 

 
   
MKX WATCHES/WARNINGS/ADVISORIES
 
 
WI...NONE.  
LM...NONE.  

 
 

 
 
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