Hail in Grand Traverse County, Michigan

Multiple reports of large hail in the Traverse City, MI metro area, including quarter-size hail at UpNorthLive studios west of Traverse City at 0630am, and half dollar size hail at 9&10 studios in downtown Traverse City at 0640am. Hail up to 1.5 inches was reported near Turtle Creek Casino at Acme, east of Traverse City, at 0654am, along with ponding on roads from heavy rainfall. Additional reports and photos of similar sized hail in the Traverse City area on social media.

An unseasonably hot and humid air mass beneath a strong upper ridge in place across the Midwest led to the development of storms late on the evening of the 20th across the Northern Plains. These congealed into a thunderstorm complex over the Upper Midwest, tracking eastward along the perimeter of the ridge, into the Upper Great Lakes on the morning of the 21st. A NW-SE oriented broken line of storms developed along a warm advection axis ahead of the initial line of storms; this produced hail up to the size of golf balls across parts of northern Lower Michigan, including the Traverse City metro area. Meanwhile, a strong mesolow developed at the heart of the slowly decaying thunderstorm complex, ultimately driving a meteotsunami across the length of Lake Superior, resulting in significant water level changes of as much as 2-4ft on Whitefish Bay and the Upper St. Mary's River during the morning hours. This resulted in delays in freighter traffic through the Soo Locks, the waterway through which nearly 100 percent of America's domestic iron ore passes. Periodic water level fluctuations up to 2 feet remained present on the eastern end of Lake Superior through the next couple days, and water levels did not settle back down to normal for several days through the end of June.