TornadoLookup

Home / Indiana / Decatur

EF1 tornado in Decatur County, Indiana

Tornado May 25, 2011 · Decatur County, Indiana

EF1
Rating
0.1 mi
Path length
400 yd
Path width
$250K
Damage as recorded
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 400 yards (0.23 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

Tornado damage was discovered in the Rolling Meadows neighborhood about one half mile south of the Interstate 74 and US 421 interchange and just north of County Road 100 North. This was determined to be from a second tornado, rated EF-1 with maximum winds at 90 mph. Approximately 15-20 homes throughout the neighborhood sustained roof or siding damage, with garage doors buckling and blowing inwards on several of these homes. Much of the debris was strewn into an adjacent farm field. Just across US 421 off to the northeast, a small piece of plywood was found impaled into the stucco on a bank building. The path length was 0.5 miles with a maximum width 400 yards.

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 Greensburg Arpt (39.3532, -85.5090).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 317944. Narratives are written by the National Weather Service forecast office that issued the report.

Tornadoes near your address

See every tornado that passed near a place you know, measured to its path.