870 FXUS63 KGRR 060555 AFDGRR Area Forecast Discussion National Weather Service Grand Rapids MI 1255 AM EST Fri Nov 6 2026 .KEY MESSAGES... - Upper Low brings showers and even wet snow north tonight - Northerly flow lake effect rain showers Friday && .DISCUSSION... Issued at 205 PM EST Thu Nov 5 2026 - Upper Low brings showers and even wet snow tonight An upper low moves through followed by push of cold air tonight which could bring the first snow to the northern forecast area by Friday morning. Above freezing skin temperatures should prevent accumulations except for the higher elevations of Osceola and Clare Counties where a coating of slush is possible. No travel impacts are expected. - Northerly flow lake effect rain showers Friday Lake effect rain showers in north-northwest flow on Friday will affect areas close to Lake Michigan with the highest POPs in southwest Allegan and western Van Buren Counties. The rain will be diminishing and ending Friday night as shortwave ridging moves in. Cyclonic flow returns over the weekend but fair weather continues as a clipper passes far to the north of Lower Michigan. && .AVIATION /06Z TAFS THROUGH 06Z SATURDAY/... Issued at 1244 AM EST Fri Nov 6 2026 Low ceilings will continue to impact local terminals to varying degrees, along with occasional lake effect showers. Once overnight showers move east of the area over the next few hours, MKG has the highest chance for additional rain today, although there is a lower probability of a few showers at LAN/JXN during the day. Elsewhere, the main concern is low ceilings, which will be quite variable. at GRR/AZO/BTL, some improvement is likely tonight through tomorrow afternoon, but MVFR ceilings are expected to move back in late afternoon/evening. At other terminals clouds are more likely to persist, and a longer period of MVFR categories is expected throughout the day. && .MARINE... Issued at 1228 PM EST Thu Nov 5 2026 No changes to the marine hazards forecast for tonight with low end northerly gales at times persisting into Friday afternoon. Wind fields may be slightly too strong for waterspouts, but they are a possibility Friday morning when the mid/upper cold pool moves across the lake. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...None. MARINE...Small Craft Advisory until 7 PM EST this evening for LMZ844>847. Gale Warning until 7 PM EST this evening for LMZ848-849. && $$ DISCUSSION...Ostuno AVIATION...04/BRC MARINE...Ostuno

NWS GRR Office Area Forecast Discussion