019
FXUS63 KMQT 060510
AFDMQT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MARQUETTE MI
110 AM EDT MON OCT 6 2025
KEY MESSAGES
- BREEZY ACROSS THE AREA THIS AFTERNOON AND EVENING WITH
ISOLATED GUSTS TO 40 MPH.
- SOUTHERLY GALES ON LAKE SUPERIOR THIS AFTERNOON AND EVENING.
- COOLER WEATHER STARTING MONDAY; WIDESPREAD FROST FOR INLAND
AREAS TUESDAY AND WEDNESDAY NIGHT.
DISCUSSION
ISSUED AT 227 PM EDT SUN OCT 5 2025
IT WAS ANOTHER UNSEASONABLY WARM AFTERNOON ACROSS THE U.P TODAY WITH
HIGHS WELL INTO THE 70S AND LOW 80S. SOUTHERLY FLOW HAD STRENGTHENED
AHEAD OF AN APPROACHING TROUGH AND COLD FRONT WITH WINDS GUSTING UP
TO 35 MPH IN THE CENTRAL AND WEST. SATELLITE AND MODEL ANALYSIS
SHOWED THE UPPER LEVEL RIDGE NOW OVER THE EAST COAST WITH A BROAD
TROUGH ADVANCING THROUGH THE WESTERN U.S. THERE WAS A SURFACE LOW
TRACKING WELL WEST OF THE AREA, OVER NORTH DAKOTA, KEEPING ANY
WIDESPREAD RAIN WELL WEST OF THE AREA. OTHER THAN A FEW PASSING HIGH
CLOUDS IT WAS SUNNY ACROSS THE U.P THIS AFTERNOON.
THE WESTERN TROUGH WILL PUSH EAST INTO THE UPPER GREAT LAKES THROUGH
TUESDAY MORNING. THE SURFACE LOW PRESSURE OVER NORTH DAKOTA WILL
TRACK INTO WESTERN ONTARIO KEEPING HOPES FOR APPRECIABLE, WIDESPREAD
RAINFALL LOW. AS THE LOW LIFTS TO THE NORTHEAST IT WILL DRAG A COLD
FRONT THROUGH THE U.P FROM WEST TO EAST TONIGHT INTO EARLY MONDAY.
EXPECT SHOWERS ALONG AND JUST BEHIND THE COLD FRONT AS IT PUSHES
THOUGH THE AREA. CAPE VALUES ARE PRETTY WEAK ALONG THE FRONT, 100 TO
200 J/KG BUT WITH LIS APPROACHING -2 WOULDN'T BE SURPRISED TO SEE A
FEW RUMBLES OF THUNDER THIS EVENING AND TONIGHT. OVERALL EXPECTING
LESS THAN A QUARTER INCH OF RAINFALL.
SHOWERS WILL LINGER IN THE EASTERN U.P MONDAY THROUGH THE EARLY
AFTERNOON. EXPECT COOLER AND DRY WEATHER ELSEWHERE WITH LIGHT WINDS
AND TEMPERATURES IN THE 50S TO LOW 60S.
THE COOLER AND DRY WEATHER WILL CONTINUE THROUGH MID WEEK. THE
COOLER AIRMASS, COMBINED WITH CLEAR SKIES, DRY AIR AND LIGHT WINDS
WILL RESULT IN OVERNIGHT LOWS DOWN INTO THE UPPER 20S AND LOW 30S
AWAY FROM THE SHORELINES TUESDAY AND WEDNESDAY NIGHT RESULTING IN A
WIDESPREAD FROST/FREEZE, MAINLY OVER THE CENTRAL AND WEST.
THE TROUGH AXIS SHIFTS EAST OF THE AREA LATE IN THE WEEK AS A RIDGE
OF HIGH PRESSURE BUILDS INTO THE WESTERN U.S. THIS WILL RESULT IN
TEMPERATURES WARMING INTO THE 60S ACROSS THE U.P LATE THIS WEEK,
SEVERAL DEGREES ABOVE SEASONAL AVERAGES. NORTHWEST FLOW ALOFT WILL
BE FAVORABLE FOR AT LEAST A FEW SHORTWAVES TO AFFECT THE AREA,
BRINGING THE CHANCE FOR PRECIPITATION BACK INTO THE FORECAST
THURSDAY INTO FRIDAY.
AVIATION /06Z TAFS THROUGH 06Z TUESDAY/
ISSUED AT 110 AM EDT MON OCT 6 2025
VFR CONDITIONS WILL BE THE PREVAILING FLIGHT CATEGORY AT ALL TAF
SITES. HOWEVER, CANNOT STILL RULE OUT SOME POSSIBLE MVFR AT SAW
EARLY THIS MORNING UNTIL COLD FRONT IS THROUGH THE AREA. AND,
SOUTHERLY WINDS ARE STILL QUITE STRONG AT SAW AND CMX WITH GUSTS UP
TO 25 KTS. WINDS WILL START TO SHIFT TO THE NORTHWEST SOON IN THE
WAKE OF THE AFOREMENTIONED COLD FRONT, AND 35 KT GUSTS WILL PERSIST
AT CMX THROUGH DAYBREAK. HOWEVER, HAVE REMOVED LLWS THREAT AT SAW.
MARINE
ISSUED AT 227 PM EDT SUN OCT 5 2025
SOUTHERLY GALES TO 40 KTS ARE EXPECTED ACROSS MUCH OF THE LAKE
THROUGH LATE TONIGHT AHEAD OF A COLD FRONT PUSHING THROUGH THE
REGION FROM WEST TO EAST. WIND WILL SHIFT NORTHWEST BEHIND THE FRONT
AND WEAKEN BELOW 30 KTS BY EARLY MONDAY MORNING, FURTHER FALLING
BELOW 20 KTS BY LATE MORNING. ANOTHER COLD FRONT WILL PUSH THROUGH
THE AREA MONDAY NIGHT INTO TUESDAY WITH WESTERLY WINDS INCREASING TO
25 TO 30 KTS. WINDS WILL DIMINISH FROM WEST TO EAST ON TUESDAY
AFTERNOON INTO TUESDAY NIGHT. ANOTHER PERIOD OF WINDS GUST TO 25 KTS
IS EXPECTED ON WEDNESDAY NIGHT INTO THURSDAY AS SOUTHERLY FLOW
DEVELOPS ACROSS THE AREA IN RESPONSE TO A SURFACE TROUGH MOVING
THROUGH ONTARIO.
MQT WATCHES/WARNINGS/ADVISORIES
UPPER MICHIGAN...
NONE.
LAKE SUPERIOR...
GALE WARNING UNTIL 5 AM EDT /4 AM CDT/ EARLY THIS MORNING FOR
LSZ162-241-242-263.
GALE WARNING UNTIL 2 AM EDT EARLY THIS MORNING FOR LSZ243>250-
264>266.
LAKE MICHIGAN...
NONE.
DISCUSSION...NL
AVIATION...TDUD
MARINE...NL
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