673 FXUS63 KGRR 211150 AFDGRR Area Forecast Discussion National Weather Service Grand Rapids MI 750 AM EDT Sat Mar 21 2026 .KEY MESSAGES... - Fairly Quiet Weather Next Several Days && .DISCUSSION... Issued at 153 AM EDT Sat Mar 21 2026 - Fairly Quiet Weather Next Several Days After a couple weeks of stormy March weather we shall see a bit of a lull the next few days with only a couple clippers moving through with limited moisture. The first arrives Saturday night into Sunday with light rain and wet snow but no impacts to travel expected. Temperatures will turn colder next week as the polar jet sinks south across the Great Lakes but only light rain or snow as another clipper moves through late Wednesday into Thursday. && .AVIATION /12Z TAFS THROUGH 12Z SUNDAY/... Issued at 750 AM EDT Sat Mar 21 2026 There are two aviation concern this TAF period. They bookend the TAFS. The first is the freezing fog this morning. That is bringing LIFR vsbys to LAN and JXN with MVFR vsbys elsewhere. Latest obs show this FZFG and corresponding low clouds are already beginning to lift/ dissipate. Latest trends show that vsbys should improve over the next few hours. CIGs should improve to MVFR by 14Z, but will linger there, with potentially flight restrictive cigs through 18Z. Soundings show that those ceilings should then improve this afternoon. The second concern will be from LLWS from a jet that will move through the area this evening. Beginning around 22Z along the coast and then moving inland, a strong LLJ will move overhead bringing LLWS to all TAF sites. This will be a 50kt Jet at 020Kft, however, portions of the jet, upwards of 40kts will reach as low as 800 to 1KFT. Winds are expected to be gusty at the SFC with this time, with gusts upwards of 20 to 25kts possible. Winds are expected to veer with height, from the southwest at the surface to westerly at 2KFT. Expect this jet and corresponding LLWS to affect the TAF sites until around 09Z. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...None. MARINE...None. && $$ DISCUSSION...Ostuno AVIATION...Ceru

NWS GRR Office Area Forecast Discussion