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F0 tornado in Boone County, Indiana

Tornado April 20, 2004 · Boone County, Indiana

F0
Rating
0.1 mi
Path length
30 yd
Path width
$75K
Damage as recorded
EF0EF1EF2EF3EF4EF5Unrated

NOAA recorded where this tornado touched down but not where it lifted, so it appears as a point. Other tornadoes recorded nearby that day are shown faint.

What F0 means. This tornado was rated on Fujita’s original scale, used until 2007. F0 meant light damage: shingles and siding peeled, gutters torn, branches broken; the scale paired it with winds of 40–72 mph, figures later judged too high, especially toward the top of the scale, and revised downward in the Enhanced Fujita scale. Ratings then, as now, came from the damage.

What the National Weather Service wrote

A second tornado, associated with a low-topped supercell that damaged homes in the Jamestown area, touched down in rural Boone county. Eyewitnesses reported funnel clouds and scattered damage along the path.

The wider storm

3 low-topped supercell thunderstorms dropped down at least 1 tornado a piece and a total of 6 tornadoes across Central Indiana during the late afternoon and early evening of April 20. All of the tornadoes were F0 or F1 in rating. The worst damage occurred in Kokomo as 3 homes were damaged and a skating rink and trucking company had significant damage totaling around 3 million dollars. There were also 1 minor injury. The town of Jamestown along the Hendricks/Boone county border also was hit hard with significant damage to a dozen homes totaling 1.65 million dollars. There were also 8 minor injuries, 1 as a result of his semi being overturned along Interstate 74.

Began near Lebanon (40.4833, -86.1333).

Other tornadoes from the same storm system

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

F1 Hendricks CountyF1 Boone CountyF1 Clinton CountyF1 Howard CountyF0 Howard CountyF0 Madison County

Source: NOAA Storm Events Database, event 5392898. Narratives are written by the National Weather Service forecast office that issued the report.

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