Marine Thunderstorm Wind — Eagle River To Manitou Island Mi, Lake Superior
2011-07-01 · near Copper Harbor, Eagle River To Manitou Island Mi, Lake Superior
60 EG
Magnitude
Event narrative
The Keweenaw County Sheriff reported around 40 trees uprooted or snapped off just west of Copper Harbor. The trees ranged in diameter from 6 to 18 inches.
Wider weather episode
A cold front moving through a warm and unstable airmass produced a line of strong to severe thunderstorms across much of Lake Superior from late evening on the 1st into the early morning of the 2nd.
View location on OpenStreetMap → (47.4721, -87.8984)
Source: NOAA Storm Events Database, event_id 329622. Narrative written by the NWS forecast office that issued the report.