Marine Weather and Tide Forecast for Grand Ledge, MI

DISCUSSION
Issued at 403 AM EST Mon Nov 10 2025

- Lake effect snow expected today into tonight

Headline decisions along the lakeshore was the focus of the forecast tonight...which is stating the obvious. Early season lake effect snow events are always a bit difficult given a warm boundary layer over the lake and warm ground. Both of which can cut back on totals and lessen impacts on roads. This airmass is cold however with air temps in the teens in portions of our northern CWA Headline decisions have been made however with our highest confidence in heavier snows being across Mason and Oceana Counties. These 2 counties will see the longest period of snow and will have better connections to the long fetch and some pre- conditioning off of Lake Superior. Started the headline at 7am up in Mason and Oceana. South of there we have gone Winter Weather Advisories given shorter periods of snow and not as much of a Lake Superior connection, starting at 10am in Muskegon and Oceana and 1pm in Allegan and Van Buren. We feel 4 to 9 inch amounts are possible in the Warning area with 2 to 5 inch amounts with locally heavier totals possible in the Advisory. We have already seen hefty totals early this morning downwind of Lake Michigan with over 9 inches of snow reported at Valparaiso in Northwest Indiana per a Chicago LSR.

All the parameters are in place for some heavier lake effect snow with deep moisture through 700mb, strong instability with delta Ts in the lower 20s C and lift associated with a shortwave moving through in the mid levels this afternoon and evening. This event at its core is the inland push of the band that is over Lake Michigan now. Again, the band is situated over our two northern lakeshore counties the longest and hence the warning there. Some of the heaviest snow will likely occur this afternoon and early evening as the band is moving inland across Western Lower Michigan. Slippery roads and limited visibility will be the main impacts. The lakeshore is still hanging on to a fair amount of leaves which is usually the case in early November and therefore power outages are possible given the weight of the snow on the leaf surfaces. The snow will taper overnight as the band moves inland.

- Some light rain/snow Tuesday into Tuesday night

Some light rain and snow will linger into Tuesday and Tuesday night as the colder air hangs on. We will be cold enough for some light lake effect rain or snow. Not expecting much in the way of qpf though, any precipitation will be on the light side.

- Mainly dry Wednesday through Friday

We look to be mainly dry in the mid to lake work week time frame as high pressure slowly moves into the Great Lakes from the west.
The surface high will be situated over the area Thursday night into Friday. High temperatures through the week will warm from the 30s today and tomorrow, into the 40s on Wednesday and push to above normal into the 50s Thursday and Friday.

- Chances for rain next weekend

A good signal for rain exists in the ensemble data from both the GFS and the ECMWF over the week as a low sweeps through the great lakes. Rain looks to begin on Saturday with Sunday having the best chances with a cold frontal passage.

AVIATION /06Z TAFS THROUGH 06Z TUESDAY/
Issued at 1158 PM EST Sun Nov 9 2025

IFR conditions in light snow will be moving south and away from AZO and BTL by 07Z. VFR with patchy MVFR conditions can be expected overnight with mostly VFR between 12Z and 18Z Monday.
However, lake effect snow showers will bring IFR conditions to MKG and AZO after 18Z as winds go more northwest. The snow should reach GRR and BTL late in the afternoon and persist into the evening with patchy IFR conditions in snow showers. Winds will be north overnight AOB 10 knots then go northwest on Monday around 10 knots with some gusts to 20 knots at times during the evening at MKG.

GRR WATCHES/WARNINGS/ADVISORIES
MI...Winter Storm Warning from 7 AM this morning to 4 AM EST Tuesday for MIZ037-043.
Winter Weather Advisory from 10 AM this morning to 4 AM EST Tuesday for MIZ050-056.
Winter Weather Advisory from 1 PM this afternoon to 4 AM EST Tuesday for MIZ064-071.
MARINE...Small Craft Advisory until 1 PM EST Tuesday for LMZ844>849.