634 FXUS63 KGRR 282000 AFDGRR Area Forecast Discussion National Weather Service Grand Rapids MI 300 PM EST Wed Jan 28 2026 .KEY MESSAGES... - Lake effect snow continues through Thursday - Cold temperatures Thursday night - Warming trend late weekend && .DISCUSSION... Issued at 300 PM EST Wed Jan 28 2026 - Lake effect snow continues through Thursday Water vapor imagery shows another short wave moving south over Wisconsin and will move across the lake later this afternoon. We`ll see an uptick in snow showers, especially near the lake shore. Earlier, we extended the winter weather advisory through Thursday morning and extended it north to include the entire lake shore counties. Bufkit omega profiles show an omega bullseye at South Haven this evening, corresponding to the lift created by the short wave. More lift was noted through 12z. Instability remains very favorable for lake effect snow production with h8 temps around -20c through Thursday. One final short wave will move south early Friday and once it does so, boundary layer winds will become northeasterly effectively pushing the lake snow bands southwest across the lake toward Wisconsin and Illinois. We will see some synoptic snow, however, as the short wave passes through on Friday, but accumulations will be limited to an inch or less. - Cold temperatures Thursday night RH progs show clearing skies developing over northeast Lower and moving south across the northeast cwa Thursday night. Apparent temperatures will bottom out in the 15 to 20 below range and we`ll likely need a cold weather advisory north of I-96. Apparent temperatures south of I-96 are expected to fall to -5 to -10. - Warming trend late weekend Saturday and Sunday will be mostly dry as high pressure builds southeast from the northern Plains. H8 temps near -12c Saturday warm to -6c by Monday. Correspondingly, highs in the mid teens Friday and Saturday will warm into the mid 20s Sunday and remain there through Wednesday. Low temperatures Sunday night through Tuesday night will remain above zero. && .AVIATION /18Z TAFS THROUGH 18Z THURSDAY/... Issued at 1250 PM EST Wed Jan 28 2026 Surface troughing over the Great Lakes, coupled with 850 mb temps around -20C, continues to generate lake effect snow in the normally favored WNW flow areas. Winds will turn slightly more NW tonight as final embedded surface trough rotates east. MVFR ceilings/vsbys will be most common within the LES, especially at MKG/AZO/GRR, with only brief periods of greater restrictions. Surface pressure gradient weakens late tonight, and this will likely permit clouds to scatter out over inland areas by early Thursday, including at LAN/BTL/JXN. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...Winter Weather Advisory until 10 AM EST Thursday for MIZ037-043- 050-056-064-071-072. MARINE...None. && $$ DISCUSSION...04 AVIATION...Smith

NWS GRR Office Area Forecast Discussion