EF0 tornado — McLean County, Illinois

EF0 tornado in McLean County, Illinois

Tornado August 19, 2009 · McLean County, Illinois

EF0

Rating

2.5 mi

Path length

20 yd

Path width

$4K

Crop damage

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 20 yards (0.01 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF0 means. On the Enhanced Fujita scale, EF0 is light damage: shingles and siding peeled, gutters torn, branches broken, consistent with estimated gusts of 65–85 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 developed in an open field 3 miles south of the town of Holder. Damage was minimal, and was confined to crops. The tornado dissipated on the west edge of a large wind farm, about 3 miles to the southeast of Holder.

The wider storm

A vigorous upper-level disturbance in conjunction with a warm front lifting northward through central Illinois triggered strong to severe thunderstorms during the afternoon and evening of August 19th. Embedded supercells within a long line of storms produced enhanced wind damage and tornadoes. Seven tornadoes touched down on August 19th, affecting parts of Scott, Morgan, Sangamon, Logan, DeWitt, McLean, and Vermilion counties. The strongest tornado was rated as an EF3 by an NWS Storm Survey as it tracked across southern Logan County. Total damages to crops and property from the 7 tornadoes were estimated to be more than $25 Million.

Other tornadoes from the same storm system

Source: NOAA Storm Events Database, event 194910. Narratives are written by the National Weather Service forecast office that issued the report.

EF0 tornado in McLean County, Illinois

What the National Weather Service wrote

The wider storm

Other tornadoes from the same storm system

Tornadoes near your address