711 FXUS63 KGRR 091101 AFDGRR Area Forecast Discussion National Weather Service Grand Rapids MI 701 AM EDT Thu Apr 9 2026 .KEY MESSAGES... - Light rain today - Rain Thursday night Friday - Excessive rainfall potential next week && .DISCUSSION... Issued at 215 AM EDT Thu Apr 9 2026 - Light rain today Low pressure center moves across James Bay today with a trailing cold front bringing light rain this morning. The front clears Lower Michigan this afternoon with sfc ridging bringing clearing skies by evening. The front stalls across IN/OH then returns late Thursday. - Rain Thursday night Friday A wave of low pressure along the stalled front spreads rain back into Lower Michigan Thursday night into Friday. Strong moisture advection and some elevated instability suggest embedded convection is possible, which could lead to locally higher QPF approaching an inch across central and southern zones before the rain ends Friday afternoon. - Excessive rainfall potential next week Monday through Thursday of next week appears to hold 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. && .AVIATION /12Z TAFS THROUGH 12Z FRIDAY/... Issued at 700 AM EDT Thu Apr 9 2026 LLWS will continue overnight with VFR conditions expected through Thursday night. Light rain will be moving out this morning but then return after midnight, when MVFR and IFR can be expected after 06Z. && .MARINE... Issued at 215 AM EDT Thu Apr 9 2026 No changes to the Gale Warning and SCA. Winds should go northwest and diminish Thursday afternoon. Winds and waves should be relatively clam into the weekend then ramp up again as southerly winds increase on Sunday. && .HYDROLOGY... Issued at 215 AM EDT Thu Apr 9 2026 Rain amounts today are expected to be light enough not to affect river levels or contribute to flooding of low lying areas. More significant rain is expected on Thursday night into Friday with over half an inch forecast for much of the Grand and Kalamazoo River basins. This could cause minor rises on those rivers or more likely the their tributaries through the weekend. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...None. MARINE...Small Craft Advisory until 11 AM EDT this morning for LMZ844-845. Gale Warning until 11 AM EDT this morning for LMZ846>849. && $$ DISCUSSION...Ostuno AVIATION...Ostuno MARINE...Ostuno HYDROLOGY...Ostuno

NWS GRR Office Area Forecast Discussion