Area Forecast Discussion
Issued by NWS Grand Rapids, MI
Issued by NWS Grand Rapids, MI
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530 FXUS63 KGRR 151825 AFDGRR Area Forecast Discussion National Weather Service Grand Rapids MI 225 PM EDT Sun Sep 15 2024 .KEY MESSAGES... - Highs in the 80s and Likely Dry All Week && .DISCUSSION... Issued at 224 PM EDT Sun Sep 15 2024 - Highs in the 80s and Likely Dry All Week Dry conditions are favored to continue. Upper ridging across the Great Lakes and eastern Canada is not anticipated to relent anytime soon. The ridging is anomalously strong, as shown by the ECE ensemble mean 500 mb heights reaching almost 3 standard deviations above normal across eastern Canada by late this week. Longwave troughing across the western U.S. is going to have a tough time making forward progress with such a strong ridge in place. Any tropical activity that develops across the western Atlantic also would likely be steered away from the region. A minority of ensemble members (mainly from the GEFS) show rain associated with the remnants of whatever becomes of the National Hurricane Center`s "Invest 95L" reaching eastern Lower MI by mid week. Most ensemble members overall do not depict this outcome, and given the upper pattern in place we are likely to stay dry, aside from some cloud cover from this system potentially by Wednesday or Thursday. Warmer than normal temperatures will continue unabated this week, with 80 or warmer likely each day for almost all areas. Normal highs are in the mid 70s. && .AVIATION /18Z TAFS THROUGH 18Z MONDAY/... Issued at 125 PM EDT Sun Sep 15 2024 VFR through the period. A very light lake breeze should push through MKG this afternoon and also Monday afternoon. Otherwise, mainly clear skies and light winds are expected. && .MARINE... Issued at 224 PM EDT Sun Sep 15 2024 Waves of 1 foot or less are expected into much of this week given mainly easterly flow. This will lead to pretty tranquil conditions. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...None. MARINE...None. && $$ DISCUSSION...Hoving AVIATION...Hoving MARINE...Hoving