Upper disturbances moving through a warm and unstable air mass produced several strong to severe thunderstorms over the west half of Lake Superior during the evening of the 31th.
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.
Upper disturbances moving through a warm and unstable air mass produced several strong to severe thunderstorms over the west half of Lake Superior during the evening of the 31th.
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 May 31, 6:16 PM EST, 1 hour 34 minutes earlier.
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</html>The Marquette radar (KMQT), 117 km away, was scanning. The volume nearest the first event began at 00:51 UTC.
5 marine thunderstorm wind. Local standard time, as filed.
Wind gusts at or above 50 knots were measured by the spotter in Freda and also the GLOS station at Portage Canal.
Measured wind gust at the Portage Canal GLOS.
Measured wind gusts at the Grand Transverse Bay GLOS.
Wind gust measured at the Big Bay Lighthouse.
Measured wind gust at Stannard Rock Light.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Lake Superior in 2013Every state in 2013This 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: 452391, 452396, 452397, 452398, 452399.