A rapidly deepening low pressure system lifting northeast of Upper Michigan into Ontario caused damaging winds across much of Upper Michigan near Lake Superior from the 14th into the early morning of the 17th.
Every event with a place to put it; 12 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS MQT wrote it up.
A rapidly deepening low pressure system lifting northeast of Upper Michigan into Ontario caused damaging winds across much of Upper Michigan near Lake Superior from the 14th into the early morning of the 17th.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Marquette, MI wrote its last area forecast discussion before the first event at Oct 14, 6:25 PM EST, 50 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
12 high wind. Local standard time, as filed.
Several healthy pine trees were knocked down near Merriweather along Highway M-28. Exact size of the trees was unknown.
The Lac La Belle Fire Department reported an 18-inch diameter tree down across the road at the fire station. Several trees were down on power lines near Eagle Harbor.
Numerous large trees down on a private residence in Trowbridge Park during the night.
Measured wind gust at GLOS site in Grand Marais.
Numerous trees were reported down near Laurium including two 24-inch diameter trees next to the Calumet High School. Time of the event was estimated.
Several trees were reported down across the road near Pine Stump Junction. Several three-foot diameter trees were reported down near the Pike Lake area along County Road 414. Time was estimated from highest winds at Grand Marais GLOS.
The Luce County Sheriff reported numerous trees down across the county resulting in several power outages.
Wind gusts measured at the Grand Marais GLOS site.
Ten-inch diameter maple tree snapped in half near Silver City. No leaves were on the tree.
Wind gust measured by the GLOS site in Grand Marais.
The Keweenaw County Sheriff reported several trees down due to high winds overnight...including near Eagle River, across Highway US-41 near Lake Medora and Five-Mile Road near Allouez. Time of the event was estimated from the Portage Lake GLOS site and the Houghton County Airport ASOS.
The State Police Post reported trees down across the county overnight, including trees on power lines. Time of the report was estimated based on wind gusts at the Portage Canal GLOS and the Houghton County Airport ASOS.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2011Every state in 2011This day in weather historyWarnings in Michigan, October 2011
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 351327, 351328, 351330, 351331, 351332, 351333, 351335, 351336, 351337, 351338, 351339, 351340.