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 /18Z TAFS THROUGH 18Z WEDNESDAY/

Issued at 210 PM EDT Tue Aug 25 2026

VFR conditions and light/variable winds will prevail at all West Michigan TAF sites this afternoon into this evening, with surface high pressure overhead. As the high slips to the east, light SSW winds and weak warm air advection will commence. This will result in thickening mid-upper cloudiness after midnight.

Thanks to said warm air advection, increasing low level moisture, and approaching cold front, a risk for showers/storms will be introduced after 12Z Wednesday at MKG/GRR/AZO/BTL. Will tentatively refrain from adding precipitation at LAN/JXN through 18Z.

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.