498
FXUS63 KDLH 092344
AFDDLH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DULUTH MN
644 PM CDT TUE SEP 9 2025
KEY MESSAGES
- SCATTERED RAIN SHOWERS WITH A RUMBLE OF THUNDER OR TWO
POSSIBLE FOR THE REST OF TODAY AND INTO WEDNESDAY,
PARTICULARLY ACROSS NORTHWEST WISCONSIN.
- CHANCES FOR AREAS OF DENSE FOG RETURN TONIGHT, ESPECIALLY
AROUND LAKE SUPERIOR AND WHERE SKIES CLEAR THIS AFTERNOON AND
EVENING.
- HIGH PRESSURE WILL KEEP US DRY UNTIL FRIDAY WITH A WARM FRONT.
ON AND OFF CHANCES FOR SHOWERS AND STORMS WILL LAST THROUGH
THE WEEKEND INTO EARLY NEXT WEEK.
DISCUSSION
ISSUED AT 1126 AM CDT TUE SEP 9 2025
A STATIONARY FRONT CURRENTLY POSITIONED FROM THE BRAINERD LAKES
STRETCHING NORTHEAST ALONG THE NORTH SHORE IS LEADING TO SOME
LOW STRATUS AND ISOLATED SHOWERS. THIS WILL CONTINUE AS THE
FRONT SLOWLY MOVES TO THE SOUTHEAST FOR THIS AFTERNOON THROUGH
WEDNESDAY. A RUMBLE OF THUNDER OR TWO ARE ALSO POSSIBLE WITH THE
SMALLEST AMOUNT OF CAPE AVAILABLE TO THESE SHOWERS. AS THE
FRONT MOVES AWAY FROM THE NORTHLAND, A HIGH PRESSURE IS FILLING
IN BEHIND WITH CLEARING SKIES. TONIGHT, LINGERING MOIST
CONDITIONS FROM TODAY'S RAIN MAY LEAD TO MORE PATCHY DENSE FOG,
SIMILAR TO WHAT WE SAW THIS MORNING. THE HIGHEST CHANCES WILL BE
IN AREAS THAT SEE SKIES CLEARING TODAY AND AREAS ALONG LAKE
SUPERIOR. A DENSE FOG ADVISORY MAY BE NEEDED ACROSS MUCH OF THE
AREA AND THE NEARSHORE WATERS TONIGHT.
HIGH PRESSURE COMBINED WITH AN UPPER LEVEL RIDGE WILL SETTLE IN FOR
THE MID WEEK, LEADING TO QUIET WEATHER UNTIL FRIDAY. PARTLY
CLOUDY TO MOSTLY SUNNY SKIES ARE EXPECTED, AND WARMING
TEMPERATURES INTO THE 70S EACH DAY.
THURSDAY NIGHT, THE BACKSIDE OF THE RIDGE WILL MOVE OVER THE
NORTHLAND AND THE HIGH WILL MOVE OFF TO THE EAST. WARM AIR ADVECTION
WILL LEAD TO INCREASING CHANCES FOR SHOWERS AND STORMS FOR FRIDAY.
THIS FLOW WILL REMAIN FOR THE OUT OF THE SOUTH FOR THE MAJORITY OF
THE WEEKEND, WITH SEVERAL SLIGHT CHANCES FOR RAIN SHOWERS AND
GENERAL THUNDERSTORMS. THOUGH THE GREATEST UNCERTAINTY IS NOT
NECESSARILY WHETHER SHOWERS WILL OCCUR, BUT WHERE. NO SEVERE WEATHER
IS EXPECTED DURING THE WEEKEND.
INTO NEXT WEEK, A SMALL SHORTWAVE WILL MOVE UP THE SOUTHWESTERLY
FLOW, LEADING TO MORE WIDESPREAD CHANCES FOR SHOWERS AND STORMS.
MORE DETAILS WILL BE AVAILABLE AS WE MOVE THROUGH THE WEEK.
AVIATION /00Z TAFS THROUGH 00Z THURSDAY/
ISSUED AT 644 PM CDT TUE SEP 9 2025
SHOWERS WITH THUNDERSTORMS IN THE VICINITY ARE EXPECTED AT HYR
FOR THE NEXT HOUR OR TWO. CEILINGS ARE EXPECTED TO REMAIN MVFR
THERE BEFORE FALLING TO IFR LATER THIS EVENING. ELSEWHERE,
MAINLY VFR CONDITIONS FOR SEVERAL HOURS, BUT THERE IS HIGH
CONFIDENCE THAT DENSE FOG WILL GRADUALLY DEVELOP THIS EVENING
AND PERSIST THROUGH WEDNESDAY MORNING PRETTY MUCH EVERYWHERE.
INL MAY SEE IT FOR A SLIGHTLY LESSER DURATION THAN ELSEWHERE,
BUT NEVERTHELESS, EXPECT IFR/LIFR CEILINGS AND VISIBILITY TO
PREVAIL TONIGHT. FOG MAY ALSO BE SLOW TO LIFT WEDNESDAY MORNING,
SO IFR CONDITIONS COULD PERSIST AS LATE AS MID-MORNING BEFORE IT
SCATTERS OUT GRADUALLY TO VFR CONDITIONS BY MID-DAY.
MARINE /FOR NEAR SHORE WATERS OF WESTERN LAKE SUPERIOR/
ISSUED AT 1126 AM CDT TUE SEP 9 2025
FOGGY CONDITIONS OVER LAKE SUPERIOR CONTINUE. FOG IS EXPECTED
TO SLOWLY CLEAR THROUGHOUT THE AFTERNOON, BUT WILL LIKELY
RETURN QUICKLY THIS EVENING INTO THE OVERNIGHT HOURS. AN
ADDITIONAL DENSE FOG ADVISORY MAY BE NEEDED FOR MUCH OF THE
WESTERN LAKE SUPERIOR NEAR SHORE WATERS. ADDITIONALLY, SOME
SCATTERED SHOWERS AND AN OCCASIONAL STORM ARE POSSIBLE ALONG THE
SOUTH SHORE THIS AFTERNOON.
FOR THE OPEN WATER DISCUSSION, REFER TO THE NWS MARQUETTE AREA
FORECAST DISCUSSION AT WEATHER.GOV/MQT.
DLH WATCHES/WARNINGS/ADVISORIES
MN...NONE.
WI...NONE.
MARINE...DENSE FOG ADVISORY UNTIL 10 AM CDT WEDNESDAY FOR LSZ140>142.
DISCUSSION...KML
AVIATION...JDS
MARINE...KML
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