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Marine Thunderstorm Wind — Duluth Mn To Pt Wing Wi, Lake Superior

2019-06-04 · near Brule Point, Duluth Mn To Pt Wing Wi, Lake Superior

39 MG

Magnitude

Event narrative

A gust to 45 mph was recorded by the M/V Burns Harbor.

Wider weather episode

Thunderstorms developed over northeastern Minnesota on the afternoon of the 4th. A warm front was draped along the International Border with a secondary warm front pushing northward from the south. Daytime heating, advection of a more favorable airmass for severe weather and a shortwave trough moved into the western part of the area and lead to increased shear and steep lapse rates that led to the development of storms. Storms become stronger through the afternoon as they moved southeast, then moved over Lake Superior, where an ore boat was able to record a gust to 45 mph.

View location on OpenStreetMap → (46.8513, -91.5900)

Source: NOAA Storm Events Database, event_id 835845. Narrative written by the NWS forecast office that issued the report.