Heavy rain, large hail, record heat and a waterspout top the list of Michigan weather events on this day in history. From the National Weather Service and Storm Prediction Center (SPC) archives here are the events that happened on August 11.
1864 - Lansing hits 101°. This was the all-time high temperature record for Lansing before being broken by a reading of 102° 1894.
1941 - It was a soggy day as Grand Rapids, Muskegon and Flint set daily rainfall records of 1.31, 1.57 and 1.33 respectively.
1967 - Three record lows of 47°, 46° and 47° degrees occurred in Detroit from the 11th-13th, respectively. Flint observes record lows on the 11th and 12th with 41° and 39°. Grand Rapids observes a record low of 46° and Sault Ste. Marie 40° on this day. Lansing only sees a record low on the last day of this stretch with 41° on the 13th.
1989 - 1.25 inch hail (half dollar size) fell one mile east northeast of Sault Ste. Marie in the St. Mary's River in the mid-afternoon out of a severe thunderstorm.
2003 – Thunderstorms developed behind a cold front to start the week. Large trees came down with wind reports over 60mph. Parchment reports a wind of 62mph and Portage 69mph. Click here for a radar loop of the storms on this day. The attached slideshow has a few severe weather maps for the day.
2004 - Cool and cloudy weather was observed with high temperatures only in the 60s. Record low maximum temperatures occur at Grand Rapids with 63°, 61° at Muskegon, 60° at Houghton Lake and 64° at Lansing, and Flint. Marquette sees their record for the coolest August high temperature ever with 52°.
2011 - A waterspout was observed for 15 to 20 seconds over the Dead River Basin in the afternoon.