textproduct: Grand Rapids
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
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 /06Z TAFS THROUGH 06Z TUESDAY/
Issued at 1136 PM EST Sun Jan 11 2026
MKG should see ceilings improve to VFR between 6-8Z. For other locations MVFR ceilings linger until 9-12Z. We'll see MVFR ceilings return briefly Sunday morning before scattering out during the afternoon. Southwest winds will remain breezy through the forecast with gusts around 25 knots before subsiding around 21Z-00Z tomorrow afternoon and evening.
GRR WATCHES/WARNINGS/ADVISORIES
MI...None. MARINE...Small Craft Advisory until midnight EST Monday night for LMZ844>849.
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