Marine Thunderstorm Wind — Grand Marais To Taconite Hbr Mn, Lake Superior
2025-08-09 · near Bay of Grand Marais Asos, Grand Marais To Taconite Hbr Mn, Lake Superior
35 MG
Magnitude
Event narrative
A gust of 40 mph was recorded at the ASOS station KGNA Bay Of Grand Marais.
Wider weather episode
Another complex of thunderstorms developed the night of the 8th into the 9th across the Northern Plains and pushed eastward across the Northland during the morning hours. Storms were weakening as they reached Lake Superior, but did produce a few strong gusts in the Grand Marais area to around 40 mph as they moved through.
View location on OpenStreetMap → (47.7500, -90.3500)
Source: NOAA Storm Events Database, event_id 1290322. Narrative written by the NWS forecast office that issued the report.