926 FXUS63 KGRR 111948 AFDGRR Area Forecast Discussion National Weather Service Grand Rapids MI 248 PM EST Sun Jan 11 2026 .KEY MESSAGES... - Rain Tuesday changing to snow Wednesday - Cold and unsettled Thursday-Sunday; snowy && .DISCUSSION... Issued at 248 PM EST Sun Jan 11 2026 - Rain Tuesday changing to snow Wednesday Latest visible imagery shows clearing occuring over the eastern cwa and moving westward. RH progs indicate some continued clearing this evening before mid and high clouds overspread the region after midnight. We`ll be dry through Monday night, then rain is expected to develop ahead of the next cold front in conjunction with a strong short wave. This short wave will be the lead wave in a wave train that will carve out a broad upper trough over the Great Lakes through next weekend. Initially, Tuesday, precipitation will fall as rain as we`ll be near the warm front of the low that will track across the UP. The trailing cold front won`t move through until Wednesday morning. At that point, we`ll see rain change to snow from north to south across the cwa. H8 temperatures fall to -16 by Wednesday afternoon. Lake effect snow will develop Wednesday afternoon. However, boundary layer winds are progd to be NNEly suggesting that we won`t see much in the way of LES. We`ll need to keep any eye on the northeast cwa where some LES from Lake Huron may be possible. - Cold and unsettled Thursday-Sunday; snowy Another strong short wave in the wave train will move across northern Indiana Thursday and Friday with several more waves following through the weekend. Hard to pin down timing on these waves, but the mere presence of the them suggest the potential of some synoptic and lake effect snow. Highs have trended colder for Thursday; lower 20s now expected and it`s possible we won`t get out of the teens. Lower to mid 20s highs expected Friday through Sunday. && .AVIATION /18Z TAFS THROUGH 18Z MONDAY/... Issued at 104 PM EST Sun Jan 11 2026 MVFR cigs continue across all TAF sites this period Snow showers continue but are slowly dwindling. So have vicinity showers along the coast but these should fade over the next few hours at the latest. MVFR cigs will continue through the first half of the TAF period. Expect cigs to improve after 06Z. Winds will remain gusty this afternoon. The trough from the north will move off to the east causing winds to slacken. However another jet will approach from the south overnight. This will once again bring a round of gusty winds uncharacteristically overnight. While there is a small chance that MVFR could linger, overall VFR conditions are expected through tomorrow morning. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...None. MARINE...Small Craft Advisory until midnight EST Monday night for LMZ844>849. && $$ DISCUSSION...04 AVIATION...Ceru

NWS GRR Office Area Forecast Discussion