799 FXUS63 KGRR 101056 AFDGRR Area Forecast Discussion National Weather Service Grand Rapids MI 656 AM EDT Fri Apr 10 2026 .KEY MESSAGES... - Rain Today - Excessive rainfall potential next week && .DISCUSSION... Issued at 141 AM EDT Fri Apr 10 2026 - Rain Today Wave of low pressure moving along a stationary front will bring rain and a few elevated thunderstorms today with QPF of a half to three quarters of an inch across the Grand River basin which could cause rises on the tributaries and mainstem rivers in the Grand, Muskegon and Kalamazoo basins.The rain moves off to the southeast this afternoon as sfc high pressure builds in. - Excessive rainfall potential next week Sunday through Thursday holds the potential for more flooding rains as Plains lows track into the Great Lakes. This is similar to the synoptic pattern last week that brought flooding and could also result in severe weather depending on details that cannot be resolved yet. Latest model guidance is suggesting this large scale synoptic pattern persists even beyond day 7. && .AVIATION /12Z TAFS THROUGH 12Z SATURDAY/... Issued at 656 AM EDT Fri Apr 10 2026 Rain will be moving out by this afternoon but MVFR and patchy IFR conditions will continue through the morning. Conditions will improve to VFR this afternoon. && .MARINE... Issued at 141 AM EDT Fri Apr 10 2026 A lull in the strong winds and waves continues until Sunday when south gales are possible. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...None. MARINE...None. && $$ DISCUSSION...Ostuno AVIATION...Ostuno MARINE...Ostuno

NWS GRR Office Area Forecast Discussion