288 FXUS63 KGRR 080707 AFDGRR Area Forecast Discussion National Weather Service Grand Rapids MI 307 AM EDT Sun Mar 8 2026 .KEY MESSAGES... - Windy today - Dry weather into Tuesday morning - Low moving through Great Lakes Tues/Wed brings precipitation - Clipper to end week brings another round of precipitation && .DISCUSSION... Issued at 307 AM EST Sun Mar 8 2026 - Windy today We are expecting a windy day today as a gradient tightens between a deep low moving across Canada and high pressure situated over the southern U.S. Winds will likely gust to 40-45 mph in most areas, so we will be close to wind advisory criteria. At this time, we are not expecting widespread gusts of 45 mph so will hold off on a headline for now. Cannot rule out a few gusts to 45+ mph but confidence in this occurring is not high and again the gusts to that magnitude are likely to not be widespread. If we see gusts to 45 mph it will likely be in the midday hours from Holland and Muskegon northeast through Grand Rapids and Howard City to Mt. Pleasant. The HRRR suggests just below advisory criteria and we are going to lean on that guidance. - Dry weather into Tuesday morning Zonal upper flow will persist from today through Monday night. No systems are expected to affect the area during that time frame. Southwest flow will occur today and tonight before a dry stationary boundary sags into the area on Monday. The boundary will remain in place into Monday night with no precipitation. The focus will be on a developing low in the plains states that will move into the Southern Great Lakes into Tuesday night. Highs will be in the 50s today, 60s on Monday and potentially push to near 70 along I-94 on Tuesday. Normal highs this time of year are in the lower 40s at Kalamazoo, so Tuesday`s high will be 20-30 degrees above normal. - Low moving through Great Lakes Tues/Wed brings precipitation A low will sweep through the Southern Great Lakes region in the Tuesday and Wednesday time frame bringing precipitation to the entire area. The trend in the operational models in the last 24 hours is for the ECWMF to be further south with the low more in line with what the GFS was showing yesterday. The ensemble means of both models support this track (across the MI/IN line to Southern Lower Michigan area). The surface low will be driven by a strong upper shortwave which will bring rain and thunderstorms initially Tuesday afternoon into Tuesday night. Colder air will filter in on the north side of the low on Wednesday bringing a rain/snow mix to the area before the precipitation ends into Thursday. - Clipper to end week brings another round of precipitation The weather pattern will stay active into the end of the week with a strong upper wave pushing a clipper quickly through the region Thursday night into Friday. Temperatures will be marginal with this system waving at 850mb from single digits above and below zero C. Surface temperatures will also oscillate from below freezing to above and back below again as the low traverses the area. Rain and snow is the going forecast now for both Thursday night and Friday. && .AVIATION /06Z TAFS THROUGH 06Z MONDAY/... Issued at 1051 PM EST Sat Mar 7 2026 Latest trends in the radar imagery indicate that the drizzle is diminishing in coverage and intensity, and visibilities and ceilings are improving a tad. We expect that a general improving trend will continue, with some periods of lower IFR conditions scattered around through the coolest part of the day. Winds are diminishing, but will ramp back up at KMKG overnight, and at the rest of the sites after daybreak. The MVFR ceilings will linger into the morning, before breaking out by afternoon. The further North and West will have more cloud cover, that will be VFR based up around 10k agl. Winds will become quite gusty with gusts of 30 to 35 knots likely for most locations Sunday afternoon. These winds will diminish close to sunset. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...None. MARINE...None. && $$ DISCUSSION...Duke AVIATION...NJJ

NWS GRR Office Area Forecast Discussion