278 FXUS63 KGRR 101734 AFDGRR Area Forecast Discussion National Weather Service Grand Rapids MI 1234 PM EST Wed Dec 10 2025 .KEY MESSAGES... - Wintry Mix to All Snow this Morning - Snow Chances into the Weekend and Arctic Air && .DISCUSSION... Issued at 333 AM EST Wed Dec 10 2025 - Wintry Mix to All Snow this Morning Snow continues along and north of I-96 this morning with rain toward the I-94 corridor where temperatures are warmer. A dry slot is beginning to work into the area this morning with areas along and south of I-96 seeing lighter precipitation and dry breaks. This lull is expected to last until mid to late morning as the deformation zone shifts south bringing with it another burst of snow with rates around a quarter of an inch per hour. An additional 1 to 3 inches is expected along the I-96 corridor with 2 to 4 inches north of M-46. As the deformation axis shifts south of the area this afternoon lake effect snow will pick up. An additional inch or two is possible in Ottawa, Allegan, and Van Buren Counties with an inch or less elsewhere along the lakeshore into Thursday morning. - Snow Chances into the Weekend and Arctic Air Within the northwest flow we`ll see additional clipper systems move through, however western Michigan will be on the edge of accumulating snow with these systems Thursday night into Friday and Saturday night into Sunday. Therefore accumulations are light. We`ll need to see a northward trend in these systems for higher amounts. With these clippers Arctic air will move in Friday through weekended. This will aid in lake effect snow showers impacting the area. 925mb temperatures will be in the dendritic growth zone and the inversion will limit the depth of showers limiting amounts. Highs are only expected to be in the teens this weekend with lows in the single digits. Any snow with these temperatures will cause slick conditions. Warmer temperatures move in next week. && .AVIATION /18Z TAFS THROUGH 18Z THURSDAY/... Issued at 1237 AM EST Wed Dec 10 2025 The frontal band of snow showers will continue to move to the southeast as the day progresses. Widespread IFR cigs and vsbys in snow showers will continue into the afternoon. The cold front is moving in from the northwest which will allow for dry northwesterly flow to overtake the region this afternoon. Cigs and vsbys will improve this afternoon beginning from thE NW to the SE from MKG and GRR then followed by LAN, AZO, BTL and then lastly JXN. This should occur beginning from around 18Z until 22Z. Ceilings and visibilities will improve behind the front with a period of MVFR between 22Z until 03Z. After 03Z VFR conditions will then infiltrate as skies improve from NW to SE. There is the potential for post frontal snow showers this evening which could bring MVFR vsbys and cigs to MKG. There also is the potential for some MVFR cigs tomorrow between 12Z and 18Z. && .MARINE... Issued at 333 AM EST Wed Dec 10 2025 Southwest gales are winding down but northwest gales will build from north to south this morning and afternoon. Winds drop to small craft advisory levels this evening. Wave heights of 8 to 12 feet are expected into tonight. Winds and waves will gradually subside on Thursday. Friday night into Saturday will bring another period of hazardous winds and waves as a cold front moves through the Great Lakes Region. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...Winter Weather Advisory until 4 PM EST this afternoon for MIZ037>040-043>046-050>052-056>059. MARINE...Gale Warning until 7 PM EST this evening for LMZ844>849. && $$ DISCUSSION...RAH AVIATION...Ceru/RAH MARINE...RAH

NWS GRR Office Area Forecast Discussion