835 FXUS63 KGRR 260540 AFDGRR Area Forecast Discussion National Weather Service Grand Rapids MI 140 AM EDT Tue May 26 2026 .KEY MESSAGES... - Quiet Weather This Week && .DISCUSSION... Issued at 140 AM EDT Tue May 26 2026 - Quiet Weather This Week An Omega block develops this week as an upper trough along the West Coast cuts off into an upper low and troughing persists in in eastern Canada extending into the NW CONUS. In between the two is an upper high over central Canada. The Great Lakes region will see dry northwest flow with Gulf moisture largely absent except for a chance of showers on Wednesday along a cold front. Lack of deep moisture should keep QPF light on Wednesday except for isolated heavier amounts in scattered diurnally-enhanced thunderstorms attending the front during the afternoon into early evening. && .AVIATION /06Z TAFS THROUGH 06Z WEDNESDAY/... Issued at 140 AM EDT Tue May 26 2026 VFR conditions will continue through Tuesday evening. Winds will be from the south AOB 10 knots. && .MARINE... Issued at 140 AM EDT Tue May 26 2026 SCA may be needed Wednesday night and Thursday as north winds to 26 knots are expected with high pressure building into Lower Michigan. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...None. MARINE...None. && $$ DISCUSSION...Ostuno AVIATION...Ostuno MARINE...Ostuno

NWS GRR Office Area Forecast Discussion