textproduct: Grand Rapids

KEY MESSAGES

- Fairly Quiet Weather into the Weekend

- More Heavy Rain possible early Next Week

DISCUSSION

Issued at 250 PM EDT Tue Apr 7 2026

- Fairly Quiet Weather into the Weekend

Cold high pressure is in place tonight but warm advection gets underway Wednesday morning with light snow chances across the northwest forecast area early Wednesday morning as a warm advection "wing" is depicted by the high resolution models. Forecast soundings still show a wedge of dry air persisting in the lowest couple thousand feet, so it is the classic forecast problem of whether the precip will evaporate aloft, i.e., the "virga storm" or reach the surface. Will have low chance POPs across the north for Wednesday morning.

The low center passes across southern Canada by Thursday with a trailing front bringing rain as it pushes south then stalls. A wave moves along the front with an area of frontogenesis bringing more rain for Thursday night into Friday, with the highest POPs and QPF across the southern half of the forecast area.

- More Heavy Rain possible early Next Week

The pattern across the CONUS reverts to the western trough, southeast ridge for early next week with a southerly flow feeding moisture into the Great Lakes as low pressure ejects out of the Plains. More flooding is possible along with conditional chances for severe convection. Most likely time window appears to be Monday into Tuesday.

AVIATION /00Z TAFS THROUGH 00Z THURSDAY/

Issued at 716 PM EDT Tue Apr 7 2026

No changes to the going forecast. High clouds are streaming in from the west and we'll see some mid cloud arrive toward morning. VFR conditions are expected through the period.

MARINE

Issued at 250 PM EDT Tue Apr 7 2026

A Gale Warning has been issued for north of Holland and a SCA between St Joseph and Holland from Wednesday morning to Thursday morning as high pressure moves east and south winds ramp up.

HYDROLOGY

Issued at 250 PM EDT Tue Apr 7 2026

No significant rain is expected until Wednesday night and Thursday when one quarter of an inch is forecast across the Muskegon Basin with lesser amounts to the south across the Grand and Kalamazoo river basins. This should not have a significant effect on the rivers, where crests from the heavy rainfall last Saturday will continue moving downstream across the rivers.

Another wet weather pattern is established early next week and some flooding is possible,

GRR WATCHES/WARNINGS/ADVISORIES

MI...None. MARINE...Small Craft Advisory from 11 AM Wednesday to 11 AM EDT Thursday for LMZ844-845. Gale Warning from 11 AM Wednesday to 11 AM EDT Thursday for LMZ846>849.