831  
FXUS63 KDLH 121150  
AFDDLH  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE DULUTH MN  
550 AM CST WED FEB 12 2025  
   
KEY MESSAGES  
 
- A COLD WEATHER ADVISORY REMAINS IN EFFECT THIS MORNING, FOR  
WIND CHILLS NEAR OR BELOW -30F ACROSS NORTHERN MN. ANOTHER  
COLD WEATHER ADVISORY WILL LIKELY BE NEEDED AGAIN TONIGHT INTO  
THURSDAY MORNING.  
 
- TEMPERATURES, FOR BOTH HIGHS AND LOWS, WILL CONTINUE TO RUN 15  
TO 20 DEGREES BELOW NORMAL FOR MOST DAYS THROUGH EARLY NEXT  
WEEK.  
 
- BEST SNOW CHANCES THIS FORECAST PERIOD OCCUR FRIDAY INTO  
SATURDAY, WITH A 50-70% OF MEASURABLE SNOW SOUTH OF THE IRON  
RANGE IN MINNESOTA AND ACROSS NORTHWEST WISCONSIN. UP TO 3-4  
INCHES POSSIBLE ACROSS PORTIONS OF NORTHWEST WISCONSIN.  
 
 
   
DISCUSSION  
 
ISSUED AT 343 AM CST WED FEB 12 2025  
 
ARCTIC HIGH PRESSURE WILL REMAIN THE DOMINANT WEATHER FEATURE  
OVER THE NORTHLAND FOR ANOTHER DAY, KEEPING MOST OF THE AREA DRY  
AND COLD. HIGH TEMPERATURES TODAY WILL REMAIN IN THE SINGLE  
DIGITS TO LOWER TEENS. THE AREA WILL BE ON THE NORTHERN FRINGES  
OF A LARGE WEATHER SYSTEM MOVING THROUGH THE LOWER MISSISSIPPI  
RIVER VALLEY. THIS WILL LEAD TO AN INCREASE IN CLOUD COVER BY  
THIS AFTERNOON, WITH LOW SNOW CHANCES ACROSS FAR SOUTHEASTERN  
COUNTIES THIS AFTERNOON AND EVENING. SNOWFALL AMOUNTS WILL BE  
AROUND 0.50 INCH OR LESS.  
 
DRIER AIR QUICKLY RETURNS TO THE AREA AS A THERMAL TROUGH  
ROTATES ACROSS THE AREA TONIGHT. WITH MOSTLY CLEAR SKIES,  
TEMPERATURES WILL BE IN THE -5 TO -15F ACROSS NORTHWESTERN  
WISCONSIN, AND -15 TO -25 ACROSS NORTHERN MINNESOTA. WITH WINDS  
AT 3-6MPH, WIND CHILL VALUES WILL AGAIN FALL BELOW -30F FOR MUCH  
OF NORTHERN MN, AND ANOTHER COLD WEATHER ADVISORY WILL BE NEEDED  
FOR TONIGHT THROUGH THURSDAY MORNING.  
 
AIRMASS STARTS TO MODERATE INTO FRIDAY, WITH LOW LEVEL WINDS  
BECOMING SOUTHERLY AND WARM ADVECTION OCCURRING AHEAD OF THE  
NEXT STORM SYSTEM. HIGHS ON FRIDAY WILL BE CLOSER TO NORMAL,  
WITH HIGHS IN THE TEENS TO LOWER 20S. SNOW SHOWERS WILL DEVELOP  
FRIDAY AFTERNOON THROUGH THE EVENING, AHEAD OF A SURFACE LOW  
MOVING OUT OF THE CENTRAL PLAINS. THERE IS A 40-60% CHANCE OF AT  
LEAST 2 INCHES OF SNOWFALL FOR LOCATIONS SOUTH OF THE IRON RANGE  
AND ACROSS NORTHWESTERN WI. DRIER AIR RETURNS FOR THE WEEKEND,  
WITH ANOTHER PUSH OF ARCTIC AIR INTO THE AREA.  
 
 
   
AVIATION /12Z TAFS THROUGH 12Z THURSDAY/  
 
ISSUED AT 550 AM CST WED FEB 12 2025  
 
HIGH CLOUDS STREAMING ACROSS NORTHWEST WI THIS MORNING, AND  
EXPECT COVERAGE OF THOSE CLOUDS TO EXPAND THROUGH THE DAY.  
VARIABLE WINDS AT 3-6KTS ARE EXPECTED, AS HIGH PRESSURE OVER THE  
REGIONS WEAKENS TODAY. VFR CONDITIONS EXPECTED THROUGH MOST OF  
THE FORECAST PERIOD FOR MOST TERMINALS.  
 
MVFR CIGS ARE EXPECTED AFTER 13/00Z AT HYR, AS A SYSTEM MOVES  
WELL TO OUR SOUTH. LOW CHANCES OF SNOW SHOWERS SHOULD REMAIN  
JUST SOUTH AND EAST OF HYR THIS AFTERNOON AND EVENING.  
 
 
   
MARINE /FOR NEAR SHORE WATERS OF WESTERN LAKE SUPERIOR/  
 
ISSUED AT 343 AM CST WED FEB 12 2025  
 
SURFACE HIGH PRESSURE IS MOVING ACROSS THE UPPER MIDWEST  
PROVIDING SOUTHWESTERLY WINDS AROUND 5 TO 10 KNOTS ACROSS THE  
LAKE. WINDS WILL TURN NORTHWESTERLY THIS AFTERNOON AND EVENING,  
AS THE SURFACE HIGH CONTINUES EASTWARD, WHILE MAINTAINING  
SIMILAR SPEEDS. WINDS WILL INCREASE FROM THE NORTH TONIGHT, AT  
10-15KTS.  
 
SATELLITE AND RADAR CONTINUES TO SHOW LAKE EFFECT CONVERGENCE  
BANDS EXTENDING FROM THE WESTERN ARM OF LAKE SUPERIOR UP TOWARD  
ROCK OF AGES AND ISLE ROYALE. THIS AREA OF SNOWFALL WILL  
PERSIST AND SLOWLY MIGRATE NORTH TOWARD THE NORTH SHORE THIS  
MORNING, BEFORE DISSIPATING.  
 
FOR THE OPEN WATER DISCUSSION, REFER TO THE NWS MARQUETTE AREA  
FORECAST DISCUSSION AT WEATHER.GOV/MQT.  
 
 
   
DLH WATCHES/WARNINGS/ADVISORIES  
 
MN...COLD WEATHER ADVISORY UNTIL 10 AM CST THIS MORNING FOR  
MNZ010>012-018>021-025-026-033>037.  
WI...NONE.  
MARINE...NONE.  
 
 
 
 
 
DISCUSSION...HA  
AVIATION...HA  
MARINE...HA  
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