252 FXUS63 KGRR 261846 AFDGRR Area Forecast Discussion National Weather Service Grand Rapids MI 246 PM EDT Wed Aug 26 2026 .KEY MESSAGES... - Chance for showers and thunderstorms for some into this evening - Warmer next week - occasionally humid and potentially stormy && .DISCUSSION... Issued at 246 PM EDT Wed Aug 26 2026 - Chance for showers and thunderstorms for some into this evening Will continue to watch scattered showers and storms work east over the next several hours. So far...weather has behaved for much of west Michigan though enough instability remains that we could see some storms pop and produce isolated severe/near severe hail winds over the next few hours. Threat near/west of US-131 is over for the day with those east of US-127 and along/south of I-94 remaining in the greater risk zone for the next several hours. Looks like all storm threat should be out of the area by 6-7pm...though we could wrap up the potential for storms earlier than that. A few pop up showers will be possible Thursday. - Warmer next week - occasionally humid and potentially stormy Return to hotter, more humid and potentially stormy weather continues to be the most favored outcome for west Michigan in the mid-long range models. 90s at times for highs are not out of the question at this time with enough moisture and instability for potential severe weather on occasion and even heavy rain at times. && .AVIATION /18Z TAFS THROUGH 18Z THURSDAY/... Issued at 101 PM EDT Wed Aug 26 2026 A line of showers and thunderstorms has developed ahead of a front this afternoon and will progress across the terminals over the next few hours. Satellite suggests this will be the primary line today, with IFR conditions likely under the heaviest showers and storms. Gusty winds, potentially over 30 knots, are also possible. Have gone with prevailing TSRA now that the line of storms has developed and can be tracked. Expect cloud bases from 2.5-3.5kft. A second round of scattered showers is possible after 23z through approx. 04z tonight, however given low confidence in terminal impacts will remain VCSH for now. Then, a brief period of fog is possible at mainly JXN late tonight before SCT to BKN VFR clouds Thursday morning. && .MARINE... Issued at 246 PM EDT Wed Aug 26 2026 Winds and waves to decrease this evening with hazards to small craft decreasing as well. Still anticipating a brief window where it could be possible small craft and beach hazards tomorrow...but confidence remains pretty low exactly how long and if waves do materialize especially south of Muskegon. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...Beach Hazards Statement until midnight EDT tonight for MIZ037- 043-050-056-064-071. MARINE...Small Craft Advisory until midnight EDT tonight for LMZ844>849. && $$ DISCUSSION...Maczko AVIATION...Thomas MARINE...Maczko

NWS GRR Office Area Forecast Discussion