A wake low formed by a thunderstorm complex moving across Upper Michigan caused strong wind gusts at Big Bay on the morning of the 11th.
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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 wake low formed by a thunderstorm complex moving across Upper Michigan caused strong wind gusts at Big Bay on the morning of the 11th.
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 11, 5:29 AM EST, 1 minute earlier.
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</html>SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MARQUETTE MI 126 AM EDT WED MAY 11 2011 MIZ001-003-110615- KEWEENAW-NORTHERN HOUGHTON- 126 AM EDT WED MAY 11 2011 ...SIGNIFICANT WEATHER ALERT FOR HOUGHTON AND KEWEENAW COUNTIES UNTIL 215 AM EDT... AT 122 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 9 MILES NORTH OF HANCOCK...OR 9 MILES WEST OF CALUMET. THIS STORM WAS MOVING EAST AT 30 MPH. PENNY SIZE HAIL...WINDS UP TO 40 MPH...AND FREQUENT CLOUD TO GROUND LIGHTNING ARE EXPECTED WITH THIS STORM. * LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE... MCLAIN STATE PARK... CALUMET... COPPER CITY... MOHAWK... RICE LAKE... PHOENIX... STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS CONCERNING THIS WEATHER SITUATION. SRF
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
223 AM EDT WED MAY 11 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0205 AM HAIL FREDA 47.13N 88.82W
05/11/2011 M0.50 INCH HOUGHTON MI TRAINED SPOTTER
MAINLY PEA SIZED HAIL WITH A FEW DIME SIZED HAIL.
&&
SRFPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
244 AM EDT WED MAY 11 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0241 AM HAIL 1 N KEWEENAW BAY 46.87N 88.48W
05/11/2011 E0.50 INCH BARAGA MI TRAINED SPOTTER
1/4 TO 1/2 INCH HAIL FALLING AT THAT TIME.
&&
SRF<!doctype html>
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</html>The national radar mosaic for the moment the first event began.
1 marine high wind. Local standard time, as filed.
Wind measured by the GLOS site at Big Bay.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Lake Superior in 2011Every state in 2011This 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 2026-09-24. Each event’s entry at NCEI: 302274.