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EF1 tornado in Vigo County, Indiana

Tornado May 25, 2011 · Vigo County, Indiana

EF1
Rating
0.4 mi
Path length
100 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 100 yards (0.06 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF1 means. On the Enhanced Fujita scale, EF1 is moderate damage: roofs badly stripped, mobile homes pushed off foundations or overturned, windows broken, consistent with estimated gusts of 86–110 mph. The rating comes from a survey of the worst damage after the storm, not from a wind measurement, so it says as much about what the tornado hit as about how strong it was.

What the National Weather Service wrote

The National Weather Service survey team has determined an EF-1 tornado struck near Terre Haute in Vigo County. This tornado had wind speeds of near 100 mph cutting a path 0.4 miles long and 100 yards wide.

The wider storm

The approach of a strong low pressure system from the west set the stage for a significant severe weather outbreak across central Indiana on May 25th. Eight tornadoes touched down in central Indiana, with an additional one moving into the area from southern Indiana. In addition, widespread wind damage and large hail impacted the area. Straight line winds to over 70 mph impacted the area as well, knocking down trees, power lines, as well as damaging structures and blowing over trucks. Straight line wind damage was noted near the tornado paths as well. Hail into the 3 to 4 inch range fell from some of the storms, causing damage. The large hail stones were also blown into structures by the strong straight line winds, causing additional damage.

Began near Marion Hgts (39.4944, -87.4483).

Other tornadoes from the same storm system

8 more tornadoes the National Weather Service filed under this storm episode.

EF3 Lawrence CountyEF2 Lawrence CountyEF1 Decatur CountyEF1 Decatur CountyEF1 Parke CountyEF1 Monroe CountyEF0 Parke CountyEF0 Shelby County

Source: NOAA Storm Events Database, event 317950. Narratives are written by the National Weather Service forecast office that issued the report.

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