429 FXUS63 KGRR 241043 AFDGRR Area Forecast Discussion National Weather Service Grand Rapids MI 643 AM EDT Tue Mar 24 2026 .KEY MESSAGES... - Quiet Weather Continues through Wednesday - Marginal Risk of Severe Storms Thursday && .DISCUSSION... Issued at 643 AM EDT Tue Mar 24 2026 - Quiet Weather Continues through Wednesday No big storms in the offing through next weekend, but there is a conditional chance of strong thunderstorms across the southern zones on Thursday afternoon. A clipper and trailing front pass well north of the forecast area today with any chance of precip remaining north. - Marginal Risk of Severe Storms Thursday The next chance for precip is for Thursday into Friday as another clipper rides the fast westerlies across the Great Lakes with the best chance for measurable precip along the cold front Thursday evening. There is a marginal risk of severe storms south of I-96 where about 500 to 1000 J/kg of CAPE is possible during the late afternoon and early evening. Shear profiles are bolstered by an upper level jet streak with 45 knots of deep layer shear. The threat should wane during the evening as instability decreases. The cold front clears the southern border early Friday. Sfc high from Canada brings cold and dry weather for the weekend. && .AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/... Issued at 643 AM EDT Tue Mar 24 2026 VFR conditions continue through tonight. Winds go southwest around 10 knots today. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...None. MARINE...Small Craft Advisory from 10 AM this morning to 5 PM EDT this afternoon for LMZ847>849. && $$ DISCUSSION...Ostuno/Thomas AVIATION...Ostuno

NWS GRR Office Area Forecast Discussion