690
FXUS63 KGRR 111711
AFDGRR
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
111 PM EDT THU SEP 11 2025
KEY MESSAGES
- CHANCE OF RAIN SATURDAY
DISCUSSION
ISSUED AT 156 AM EDT THU SEP 11 2025
- CHANCE OF RAIN SATURDAY
OVERALL DRY PATTERN CONTINUES INTO NEXT WEEK WITH ONLY A CHANCE
OF SHOWERS SATURDAY MORNING. CONVECTION FORMS ON THE NOSE OF A LLJ
ACROSS WISCONSIN LATE FRIDAY NIGHT AND TRANSLATES EAST-SOUTHEAST
ACROSS LOWER MICHIGAN SATURDAY MORNING. POPS AMD QPF WILL BE
LIMITED HOWEVER AS THE LLJ IS WEAKENING. INSTABILITY AND SHEAR
PROFILES ALSO SUGGEST THUNDER CHANCES ARE ISOLATED AT BEST.
THE MAJORITY OF THE NEXT SEVERAL DAYS WILL SEE SFC HIGH PRESSURE
EDGING DOWN FROM CANADA WITH DRY NORTH OR NORTHEAST FLOW. GULF
MOISTURE REMAINS EFFECTIVELY CUT OFF INTO NEXT WEEK.
AVIATION /18Z TAFS THROUGH 18Z FRIDAY/
ISSUED AT 108 PM EDT THU SEP 11 2025
SKIES ARE GENERALLY CLEAR, ALTHOUGH VISIBLE SATELLITE IMAGERY
SHOWS A FEW CU DEVELOPING. WE'LL SEE CLEAR SKIES AND LIGHT WIND
OVERNIGHT. MOSTLY CLEAR SKIES AND A LIGHT SOUTH WIND ARE EXPECTED
FRIDAY.
MARINE
ISSUED AT 108 PM EDT THU SEP 11 2025
NO MARINE HAZARDS ARE EXPECTED TODAY OR FRIDAY. WINDS WILL BECOME
SOUTHERLY FRIDAY AND WAVES WILL BUILD TO 1 TO 3 FEET. ISOLATED
THUNDERSTORMS ARE POSSIBLE SATURDAY.
GRR WATCHES/WARNINGS/ADVISORIES
MI...NONE.
MARINE...NONE.
DISCUSSION...OSTUNO
AVIATION...04
MARINE...04
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