A line of strong storms tracked across western Lake Superior during the early morning hours.
Every event with a place to put it. 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 line of strong storms tracked across western Lake Superior during the early morning hours.
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 Sep 15, 12:25 AM EST, 1 hour 22 minutes earlier.
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</html>The Duluth radar (KDLH), 185 km away, was scanning. The volume nearest the first event began at 06:45 UTC.
1 marine thunderstorm wind. Local standard time, as filed.
Measured wind gust at 45006.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Lake Superior in 2017Every state in 2017This day in weather history
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 2026-10-01. Each event’s entry at NCEI: 716489.