196 FXUS63 KGRR 110605 AFDGRR Area Forecast Discussion National Weather Service Grand Rapids MI 205 AM EDT Mon May 11 2026 .KEY MESSAGES... - Frost/Freeze conditions again tonight - Rain chances Tuesday and Late Week && .DISCUSSION... Issued at 205 AM EDT Mon May 11 2026 - Frost/Freeze conditions again tonight Expect one more cold night as a Canadian surface high remains in place tonight with clear skies and light winds. Frost/freeze conditions could impact much of the forecast area. The sfc high is moving east and clouds may arrive from the west late in the night but temperatures could still fall below freezing in the cold spots where winds stay decoupled. - Rain chances Tuesday and Late Week A clipper low moving in the fast northwest flow arrives on Tuesday with the first widespread rain this month. QPF expected to be around two tenths of an inch with some isolated half inch amounts possible with scattered convection Tuesday evening. Flow goes more zonal late week and deeper moisture streams up from the Gulf ahead of a shortwave trough that arrives Friday or Saturday with showers and scattered convection. && .AVIATION /06Z TAFS THROUGH 06Z TUESDAY/... Issued at 205 AM EDT Mon May 11 2026 VFR conditions will continue through Monday evening. Northwest winds AOB 10 knots today will go light and variable this evening. && .MARINE... Issued at 205 AM EDT Mon May 11 2026 Winds and waves will be relatively light under high pressure today and tonight then south winds will increase to 30 knots on Tuesday and a SCA will be needed Tuesday into Wednesday, && .GRR WATCHES/WARNINGS/ADVISORIES... MI...Freeze Warning until 8 AM EDT this morning for MIZ037>040- 043>046. Frost Advisory until 8 AM EDT this morning for MIZ050>052- 056>059-064>067-071>074. MARINE...None. && $$ DISCUSSION...Ostuno AVIATION...Ostuno MARINE...Ostuno

NWS GRR Office Area Forecast Discussion


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