A strong disturbance approaching from Minnesota triggered strong thunderstorms which moved over Granite Island on the evening of the 29th.
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The episode as NWS MQT wrote it up.
A strong disturbance approaching from Minnesota triggered strong thunderstorms which moved over Granite Island on the evening of the 29th.
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 Jun 29, 8:52 PM EST, 1 hour 28 minutes earlier.
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</html>The Marquette radar (KMQT), 24 km away, was scanning. The volume nearest the first event began at 03:19 UTC.
1 marine thunderstorm wind. Local standard time, as filed.
The Granite Island Light Station measured thunderstorm wind gusts to 41 knots.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Lake Superior in 2014Every state in 2014This 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: 525389.