796 FXUS63 KGRR 280628 AFDGRR Area Forecast Discussion National Weather Service Grand Rapids MI 228 AM EDT Tue Jul 28 2026 .KEY MESSAGES... - Next chance for rain Friday and Saturday && .DISCUSSION... Issued at 227 AM EDT Tue Jul 28 2026 - Next chance for rain Friday and Saturday Quiet weather this week under high pressure with the next chance for rain coming at the end of the week into the weekend. A shortwave tough rounds the top of the western CONUS ridge and closes off across or just south of the Great Lakes. A surface low meandering across the Ohio Valley brings a moist easterly flow into Lower Michigan where mid level f-gen forcing and instability should bring rain and embedded thunderstorms with some diurnal enhancement over the weekend. Although the current forecast does not have POPs early next week, some showers could linger into Monday and even Tuesday before he upper low gets kicked out. && .AVIATION /06Z TAFS THROUGH 06Z WEDNESDAY/... Issued at 227 AM EDT Tue Jul 28 2026 MVFR with patchy IFR conditions are expected overnight then conditions should improve to VFR during the morning as drier air moves in from the north. && .MARINE... Issued at 227 AM EDT Tue Jul 28 2026 North flow with advancing high will cause hazardous conditions for boaters and swimmers today and tonight, as well as resulting in upwelling and lowered water temperatures. Conditions will improve under high pressure on Wednesday. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...Beach Hazards Statement through late tonight for MIZ037-043-050- 056-064-071. MARINE...Small Craft Advisory until 2 AM EDT Wednesday for LMZ844>849. && $$ DISCUSSION...Ostuno AVIATION...Ostuno MARINE...Ostuno

NWS GRR Office Area Forecast Discussion