textproduct: Grand Rapids

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 /12Z TAFS THROUGH 12Z THURSDAY/

Issued at 640 AM EST Wed Dec 10 2025

MVFR to IFR conditions are expected today with mainly IFR conditions through 18Z. Snow to the north will work its way south this morning dropping visibilities in the 1 to 3 SM range with additional snow accumulations up to an inch possible.

Winds will shift to the north this morning with gusts around 25 knots. Ceilings will gradually rise this afternoon to MVFR and then scatter out for inland areas. Lake effect snow may impact MKG and AZO this evening into Thursday morning. Additional accumulations under an inch are expected.

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>847. Small Craft Advisory until 7 AM EST this morning for LMZ848-849. Gale Warning until 7 PM EST this evening for LMZ848-849.