593
FXUS63 KMQT 240839
AFDMQT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MARQUETTE MI
439 AM EDT THU JUL 24 2025
KEY MESSAGES
- ADDITIONAL NON-SEVERE THUNDERSTORMS ARE POSSIBLE TODAY, ENDING
WEST TO EAST THROUGH THE COURSE OF THE DAY.
SHORT TERM /THROUGH FRIDAY/
ISSUED AT 438 AM EDT THU JUL 24 2025
ONGOING RAIN SHOWERS WITH EMBEDDED LIGHTNING STRIKES CONTINUE TO
DRIFT ACROSS UPPER MICHIGAN EARLY THIS MORNING PER LATEST RADAR
MOSAIC. WATER VAPOR IMAGERY/SURFACE ANALYSIS AT THIS TIME SHOW A
COLD FRONT CONTINUING WITH ITS SOUTHEASTWARD PROGRESSION ACROSS THE
FORECAST AREA. BUT, THE THREAT OF SEVERE STORMS AND HEAVY RAINFALL
HAS SUBSIDED. AND, ANY LINGERING SHOWERS AND NON-SEVERE
THUNDERSTORMS THIS MORNING WILL ALSO TAPER OFF FROM WEST TO EAST
THROUGH THE COURSE OF THE DAY AS THE AFOREMENTIONED FRONTAL BOUNDARY
EXITS TO THE EAST. WITH THE SLIGHTLY ANOMALOUS PATTERN, WARMER THAN
NORMAL TEMPERATURES WILL PERSIST TODAY AND TOMORROW AS HIGH
PRESSURE STRENGTHENS OVER THE REGION. IN THE WAKE OF THE COLD
FRONT, TODAY'S HIGHS WILL DIP SLIGHTLY INTO THE MID TO UPPER
70S. HOWEVER, THEY WILL QUICKLY REBOUND BACK INTO THE LOW TO MID
80S BY TOMORROW. MEANWHILE, TONIGHT'S OVERNIGHT LOWS ARE
EXPECTED TO GENERALLY BE IN THE MID TO UPPER 50S UNDER MOSTLY
CLEAR SKIES. WINDS WILL SHIFT FROM THE SOUTH/SOUTHWEST TO
NORTHWEST BY TONIGHT IN THE WAKE OF PASSING COLD FRONT.
LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/
ISSUED AT 438 AM EDT THU JUL 24 2025
UPPER LEVEL HIGH PRESSURE OVER THE SOUTHEAST BEGINS TO
RETROGRADE TO THE WEST WHILE TROUGHING CONTINUES TO AFFECT MUCH
OF CANADA. THE UPPER GREAT LAKES LOOKS LIKE IT WILL BE IN A
FAVORABLE LOCATION FOR SHORTWAVES RUNNING AROUND THE RIDGE WITH
WEST-NORTHWEST FLOW ALOFT. THIS WILL BRING THE CHANCE FOR
SHOWERS AND THUNDERSTORM BACK INTO THE FORECAST THIS WEEKEND.
TEMPERATURES WILL RUN ABOVE AVERAGE THIS WEEKEND WITH CONTINUED
HUMID CONDITIONS.
AVIATION /06Z TAFS THROUGH 06Z FRIDAY/
ISSUED AT 123 AM EDT THU JUL 24 2025
SHOWERS AND THUNDERSTORMS LIFTING NORTHEAST HAVE HELD TOGETHER
LONGER THEN EXPECTED. THESE MAY IMPACT KSAW AND PROB30 GROUPS WERE
ADDED TO ACCOUNT FOR THIS POTENTIAL. OTHERWISE, LOW CEILINGS AND
REDUCED VISIBILITY ARE EXPECTED AT ALL SITES TONIGHT AND LIFR
CONDITIONS WILL BE POSSIBLE AT ALL TERMINALS. ALL SITES LOOK TO
IMPROVE TO VFR BY THURSDAY AFTERNOON.
MARINE
ISSUED AT 307 PM EDT WED JUL 23 2025
WINDS GENERALLY OUT OF THE SOUTH MAY CONTINUE TO GUST TO AROUND
20KTS IN THE EASTERN HALF OF THE LAKE THE REST OF TODAY AND INTO THE
FIRST HALF OF THE NIGHT WITH LOW PRESSURE TROUGHING OVER THE GREAT
LAKES. ADDITIONAL ROUNDS OF SHOWERS AND THUNDERSTORMS ARE EXPECTED
ACROSS THE LAKE THIS EVENING THROUGH THURSDAY. SOME THE STORMS MAY
BE STRONG TO SEVERE, BRINGING FREQUENT LIGHTNING, ERRATIC/DAMAGING
WINDS (UP TO 30 PERCENT CHANCE), AND A WATERSPOUT CANNOT BE RULED
OUT (ABOUT A 2 PERCENT CHANCE). AFTER TONIGHT, WINDS FALL BACK
ACROSS THE LAKE AND REMAIN BELOW 20KTS THROUGH AT LEAST THE
REMAINDER OF THIS WEEK.
MQT WATCHES/WARNINGS/ADVISORIES
UPPER MICHIGAN...
NONE.
LAKE SUPERIOR...
NONE.
LAKE MICHIGAN...
NONE.
SHORT TERM...TDUD
LONG TERM...NL/TDUD
AVIATION...JTP
MARINE...LC
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