textproduct: Grand Rapids

KEY MESSAGES

- Chance for thunderstorms Wednesday, maybe some severe weather

DISCUSSION

Issued at 255 PM EDT Tue Aug 25 2026

- Chance for thunderstorms Wednesday, maybe some severe weather

Cold front on track for Wednesday with some light showers still possible early in the morning. Main time frame for any severe weather still looks to be noonish and after with all weather clearing the area by 8pm. Morning showers should be pretty scattered and are likely to inhibit afternoon storm potential for a good deal of the area - especially north of I-96 and west of US-131. Some warm/moist air will build in ahead of the front into southern lower Michigan...where best potential for destabilization will occur mid-afternoon into the early evening. This leaves the best potential for severe weather near I-94 and east of US-131...probably closer to US-127 and east.

AVIATION /00Z TAFS THROUGH 00Z THURSDAY/

Issued at 750 PM EDT Tue Aug 25 2026

VFR conditions tonight will give way to thickening clouds by early Wednesday and eventually a risk for showers and thunderstorms. S-SW breezes on Wednesday, coupled with warm air and moisture advection, and an approaching cold front will result in a risk for storms beginning at MKG around 12Z, GRR/AZO/BTL 14-15Z, and LAN/JXN 16-17Z.

SW winds outside of thunderstorms on Wednesday will gust to 20-25 kt, and likely exceed 30-40 kt in the stronger storms. Occasional MVFR vsbys /3-5SM/ are expected within the thunderstorms. The strongest storms are expected after roughly 18Z south and east of a line from AZO to LAN.

MARINE

Issued at 255 PM EDT Tue Aug 25 2026

Winds and waves to increase overnight tonight making for a hazardous boating and swimming day Wednesday. 3 to 7 foot waves will be common...especially in the northern zones into late Wednesday evening. Waves are likely to be a little less toward St joseph but borderline enough in the northern part of Van Buren County to not leave that zone out of the headlines at this time.

GRR WATCHES/WARNINGS/ADVISORIES

MI...Beach Hazards Statement from 2 AM EDT Wednesday through Wednesday evening for MIZ037-043-050-056-064-071. MARINE...Small Craft Advisory from 2 AM Wednesday to midnight EDT Wednesday night for LMZ844>849.