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EF3 tornado in Trimble County, Kentucky

Tornado March 2, 2012 · Trimble County, Kentucky

EF3
Rating
5.7 mi
Whole path
75 yd
Path width
$1.8M
Damage as recorded

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 75 yards (0.04 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 tornado first touched down about 5 miles south of Milton just southwest of the intersection of Routes 421 and 1226. After damaging several trees just west of Route 421, this narrow funnel rapidly increased in intensity as it crossed Route 421 and struck Milton Firestation number 2. The station was heavily damaged with the collapse of rigid frames. A two ton concession trailer was moved 30 yards, while a pickup truck was moved 60 yards. Damage to the fire station and a pumper exceeded 300 thousand dollars. Damage to the station indicated 140 mph winds and a tornado with EF-3 intensity. After extensively damaging many trees along Route 1226, the tornado weakened to an EF-1 at 871 Palmyra Road.

At this point witnesses described one vortex lifting while another descended from its parent wall cloud. Rapidly strengthening to an EF-3, it destroyed several homes on Culls Road. One of these homes had collapsed exterior walls. The tornado knocked over a large truss tower connected with an major electrical transmission line. The tornado weakened and damaged several trees with estimated 80 to 90 mph winds as it moved east into Carroll County.

The wider storm

A surface Low over Missouri early in the afternoon of March 2nd strengthened to below 990mb as it moved north into Michigan by the evening hours. Around dawn, a warm front moved north of the Ohio River. Scattered strong storms developed along this front across northern Kentucky, bringing several reports of dime sized hail. By mid afternoon, the combination of strong wind shear, temperatures rising to the upper 70s and over 2000 Joules/kg of CAPE led to the development of numerous supercells. Several of these storms produced tornadoes not only in north central Kentucky, but later in the evening across eastern Kentucky. Large hail was common, with several reports of baseball sized hail that damaged automobiles and roofs.

Began near Leeport (38.6563, -85.3236).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 359388. Narratives are written by the National Weather Service forecast office that issued the report.

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