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Thunderstorm Wind in Marion County, Indiana

Thunderstorm Wind August 13, 2011 · Marion County, Indiana

70 mph
Estimated gust (61 kt)
7
Deaths
43
Injuries
$975K
Damage as recorded

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

A stage collapse occurred at the Indiana State Fairgrounds in between live performances by Sara Bareilles and Sugarland, as winds estimated at 60 to 70 mph hit the above-stage fly system. These damaging winds appeared to occur with the gust front that was out ahead of the area of precipitation. Seven fatalities and 43 injuries occurred as a result of this tragic stage collapse. The Indianapolis Business Journal estimates the damages at around 975 thousand dollars.

The wider storm

Thunderstorms developed ahead of a cold front during the afternoon and evening of August 13. As these storms moved across central Indiana, they brought damaging winds and large hail to the area. The storms also caused part of a stage to collapse at the Indiana State Fair, resulting in fatalities.

Began near Shooters Hill (39.8302, -86.1341).

Source: NOAA Storm Events Database, event 345683. Narratives are written by the National Weather Service forecast office that issued the report.

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