textproduct: Grand Rapids

KEY MESSAGES

- Lingering showers and storms towards morning; Showers tonight

- Unsettled, colder weather through the week and into the weekend

DISCUSSION

Issued at 238 AM EDT Tue Apr 28 2026

- Lingering showers and storms towards morning; Showers tonight

Winds have shifted to the southwest and will continue to shift westward as the front approaches. In the wake of the wake low, the cold front will continue to spark showers and storms through early Tuesday morning. With weaker flow and lack of surface instability showers storms will be fairly benign. Showers and storms will be mainly along and north of the I 96 corridor this morning with the best are through the northwest; along and north of the US 10 corridor. This front is expected to clear out midday with clearing skies as the day continues. A large mid level and surface low will continue to move to the northeast as the positively tilted upper level low continues to bring northwesterly flow into the region tonight into Wednesday morning. Moisture advection will move northward from the south tonight into Wednesday. That system should bring some scattered showers south of the I 96 corridor. However the best moisture, instability and forcing remains in Indiana so thunder is not expected. - Unsettled, colder weather through the week and into the weekend

The above mentioned upper level low will continue to dominate the weather pattern through the rest of the week and the weekend. That low will move southward over the Great Lakes and cycle troughs through the area through the week. While precipitation will remain light, the upper low will advect cold northerly flow into the region. This will keep max temps through the week and the weekend in the 50s. Expect lows to drop into the 30s late this week, into this weekend. The mid level moisture into Friday morning should preclude any frost/freeze headlines for now. However as drier air moves overhead, along with 850 mb temps as low as -7C Saturday morning, frost and freeze will become a concern. That low will lift eastward with warm air advection early next week.

AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/

Issued at 622 AM EDT Tue Apr 28 2026

Except for a few very light showers/drizzle across the eastern portions of the area as of 620 am/1020z, the precipitation from the front passing through has moved east. We are now just left with some mainly MVFR ceilings across most of the terminals. It looks like the clouds will be slow to lift to VFR late this afternoon. Winds will also be gusty from the west through most of the day, until toward 00z this evening. We will see some mid clouds around 10k ft move in the after 00z, and additional clouds around 4k ft later tonight. This should all stay VFR, so no major impacts expected at this time.

MARINE

Issued at 238 AM EDT Tue Apr 28 2026

The lakeshore is finally become slightly less tumultuous overnight. Showers and storms have moved to the east. However, the southwesterly flow remains gusty so will keep the small craft advisory through the morning. Winds will shift to the west but the gradient will continue to slacken as the day continues. Waves will slowly subside so anticipate any headlines to drop Tuesday afternoon. While winds will peak a little Wednesday, do not anticipate any headlines will be necessary.

GRR WATCHES/WARNINGS/ADVISORIES

MI...None. MARINE...Small Craft Advisory until 6 PM EDT this evening for LMZ844>849.