277 FXUS63 KGRR 110730 AFDGRR Area Forecast Discussion National Weather Service Grand Rapids MI 330 AM EDT Fri Apr 11 2025 .KEY MESSAGES... - Mostly sunny today/Saturday - Chance of rain Sunday/Monday, then colder && .DISCUSSION... Issued at 330 AM EDT Fri Apr 11 2025 - Mostly sunny today/Saturday Water vapor imagery shows several short waves moving south over the Great Lakes early this morning. Once such wave was pushing some stratocu southwestward across the western cwa. These clouds should move over the lake prior to sunrise. Ridging will slowly move over the state today/Saturday leading to considerable sunshine and warmer temperatures as h8 temperatures rise from -6c to +4c by Saturday afternoon. Warm advection will continue through the weekend and highs will rise to around 60 Sunday and Monday. - Chance of rain Sunday/Monday, then colder Next chance of rain will come Sunday as a warm front moves across the cwa. This push of warmer air will come in conjunction with a surface low over the upper MS Valley induced by a potent short wave moving across the Dakotas. Given the surface low will be in northern MN along with the upper support, if we see any rainfall out of it, the northern cwa will have the highest PoPs. Realistically, though, the highest chance of rain will be Monday when the trailing cold front moves through with support of the upper trough. Convective potential is low with this system. Once the cold front moves through, h8 temps fall from +10c to -6c again and highs will fall back into the 40s by Tuesday. Short wave ridging pushes into the Great Lakes mid week and highs will return to the 50s which will be close to normal for this time of year. && .AVIATION /06Z TAFS THROUGH 06Z SATURDAY/... Issued at 140 AM EDT Fri Apr 11 2025 VFR conditions dominate with mostly clear skies and light winds for the rest of the night. A few locations of fog have developed mainly along the Lansing to Jackson corridor, but this isn`t expected to spread to the rest of the area, and should diminish toward/after sunrise if it lingers that long. Winds pick up a bit out of the north by late morning tomorrow under plenty of sunshine. Expect VFR conditions all day tomorrow. && .MARINE... Issued at 330 AM EDT Fri Apr 11 2025 Wind and waves will not be hazardous to small craft through Saturday. Wind will increase Sunday afternoon and a SCA may be needed during the afternoon north of Whitehall. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...None. MARINE...None. && $$ DISCUSSION...04 AVIATION...AMD MARINE...04