textproduct: Grand Rapids

KEY MESSAGES

- Freezing Rain North Today

- Snow/Wind Tonight and Monday

- Light Snow Tuesday Night/Wednesday

DISCUSSION

Issued at 401 AM EST Sun Dec 28 2025

- Freezing Rain North Today

Overrunning pattern with warm advection showers this morning will result in some icing across the northeast interior forecast area. Fortunately, QPF is expected to be light the next few hours. Temperatures and dew points are forecast to get above 0C by noon so the threat should be ending shortly after. Current forecast ice amounts are around a tenth of an inch for parts of the advisory area, primarily in the higher elevations of Osceola and Clare Counties.

- Snow/Wind Tonight and Monday

A 500 MB cut off low deepening as it moves across the Great Lakes in a strongly amplified flow regime is attended by a surface low tracking through the center of the forecast area this evening. The low deepens about 15 mb between this afternoon and Monday morning with its strong pressure gradient forcing an isallobaric response. Model cross sections of winds show 50 knots in the mixing layer on Monday in the cold advection, and wind gusts along Lake Michigan could top 60 mph. Further inland, there could be some gusts nearly that strong as well but winds will generally be in the 40 to 50 mph range on Monday.

As the low tracks through Central Lower Michigan during the afternoon, there could be a rumble of thunder in low-topped convection in the warm sector south of the low center, generally along and south of I-94. Colder air arrives on the back side of the low by midnight and lake-enhanced snow will overspread the forecast area early Monday, continuing into the evening before inversion heights drop below 5 kft Monday night as the low pulls away. Snow and blowing snow could disrupt travel during this time, especially west of US-131.

- Light Snow Tuesday Night/Wednesday

Fast northwest flow will bring a clipper low on Tuesday night and Wednesday, but model trends are for this low and shortwave trough to be weaker and sheared-out with light lake effect snow persisting into Wednesday and possibly Thursday.

AVIATION /18Z TAFS THROUGH 18Z MONDAY/

Issued at 1246 PM EST Sun Dec 28 2025

A dynamic weather event is unfolding across the region. Lightning was noted across northern IN moving slowing north into southern Lower. We've included a VCTS after 19z until 22-23z. Elsewhere IFR/LIFR cigs vsbys will be widespread in rain/fog.

A strong cold front moves through this evening. Temperatures will fall and winds will increase from the WNW. Lake effect snow will also develop creating blowing/drifting with largest accumulations closer to the lake shore. IFR vsbys in SN/BLSN will be common overnight into Monday.

GRR WATCHES/WARNINGS/ADVISORIES

MI...Winter Storm Warning from 1 AM to 7 PM EST Monday for MIZ037-038- 043-044-050-056-064-071-072. Winter Weather Advisory until 1 PM EST this afternoon for MIZ038>040-044>046. Winter Weather Advisory from 1 AM to 7 PM EST Monday for MIZ039- 040-045-051-057-058-065-066-073. Wind Advisory from 1 AM to 7 PM EST Monday for MIZ046-052-059- 067-074. MARINE...Storm Warning from midnight tonight to 1 AM EST Tuesday for LMZ844>849.