textproduct: Grand Rapids

KEY MESSAGES

- Showers and Storms Today into Tonight

- Fair weather with Warmer than normal temperatures ahead

DISCUSSION

Issued at 250 AM EDT Wed Jun 24 2026

- Showers and Storms Today into Tonight

Forecast remains on track as a rather shallow, clipper type system will swing through the region today and tonight. PWATS are around 1 to 1.5 inches with mid level lapse rates peaking around 6 to 7 C/km. Scattered showers are expected his morning into this afternoon. The best chance for storms will be late today with the arrival of a LLJ. Current track brings it closer to the I 94 corridor late today into this evening. While dynamics should be enough to produce storms, the lack of instability due to earlier showers will limit storm production and longevity. The clipper and associated fronts will move southward late tonight into Thursday.

- Fair weather with Warmer than normal temperatures ahead

Predominate zonal flow will continue through the weekend with the best moisture through IN with high pressure keeping the MI dry. The pattern will shift next week as high pressure builds over the eastern half of the US. This will allow 850 temps in the mid 20s through Lower MI. Due to that temp advection, lower MI Max temps could reach 90s. Couple that with dewpoints potentially into the 70s and heat indices early next week have a chance to reach into the 100s.

AVIATION /06Z TAFS THROUGH 06Z THURSDAY/

Issued at 640 AM EDT Wed Jun 24 2026

Weakening shower will move into the area mid to late morning. As a warm front moves near there will be a chance for MVFR and lower at MKG/GRR and LAN after 14Z. Chance for showers with restrictions at all airports this afternoon with thunder possible this evening, especially at the southern airports, mainly between 23Z and 05Z. Behind the front expect cigs to lower after 06Z Thursday with IFR cigs likely at all TAF sites.

MARINE

Issued at 440 AM EDT Wed Jun 24 2026

Wind remain fairly light towards morning. However, winds from the south will increase out ahead of the front. There remains the chance for higher waves over the northern nearshore zones. Have put out a SCA and beach hazards accordingly. Showers are likely along the lakeshore today with storms possible late this afternoon into the evening.

GRR WATCHES/WARNINGS/ADVISORIES

MI...Beach Hazards Statement from 2 PM EDT this afternoon through this evening for MIZ037-043-050. MARINE...Small Craft Advisory from 2 PM this afternoon to 10 PM EDT this evening for LMZ847>849.