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EF3 tornado in Union County, Kentucky

Tornado March 28, 2009 · Union County, Kentucky

EF3
Rating
12.3 mi
Whole path
400 yd
Path width
2
Injuries
$540K
Damage as recorded

NOAA records this tornado county by county. Its path ran through Union County → Henderson County; the totals above are for the whole tornado.

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 EF3 means. On the Enhanced Fujita scale, EF3 is severe damage: whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, consistent with estimated gusts of 136–165 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 second tornado spawned by this supercell was stronger and longer lived. This second tornado formed along Highway 141 and moved northeast along the highway. Damage was spotty at the beginning of the damage path, where a small grain bin imploded. Further along the damage path, a 30-by-50 foot machinery shed was destroyed. The estimated maximum winds were near 140 mph as the tornado approached the Henderson County line. The tornado continued into Henderson County.

The wider storm

A strong low pressure center moved northeast from Oklahoma into south central Missouri by late afternoon, with a warm front extending east from the low across western Kentucky. The warm front served as a focusing mechanism for some of the ingredients needed for tornadogenesis.

Began near Boxville (37.6414, -87.7964).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 158360. Narratives are written by the National Weather Service forecast office that issued the report.

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