The worst event was an F3 tornado that formed early in the morning of November 6, 2005, outside of Evansville, Indiana, United States.

The front was enhanced by a strong jet stream and warm, humid air ahead of it, allowing thunderstorms to develop.

A severe thunderstorm watch was issued for the region just west of Evansville as the main threat appeared to be straight-line winds.

[3] On Sunday, November 6, 2005, at around 1:39 am CST (0739 UTC), an F3 tornado touched down 2 miles (3.2 km) north-northwest of Smith Mills in Henderson County, Kentucky.

The tornado moved northeast, snapping numerous trees, destroying a farmhouse, and throwing a pickup truck into a field.

[18][20] The tornado began to rapidly weaken as it passed just south of Tennyson, and then dissipated as it crossed into Spencer County, Indiana.

Brad Gair, a coordinating officer for the Federal Emergency Management Agency (FEMA) noted: "I don't think I've ever seen a community of people come out so quickly to help each other.

"[23]On August 12, 2006, a granite monument memorial was built at Eastbrook Mobile Home Park, along with a new playground dedicated to the children lost in the tornado.

In addition, Rep. Phil Hoy introduced a bill called "CJ's law" which mandates that manufacturers of mobile homes install an operating weather radio with a separate power outlet in order to alert residents.

[24] Vanderburgh County also passed legislation toughening safety standards for their 3,100 mobile homes, requiring them to be more securely anchored with additional straps and braces, to try to prevent another tornado disaster.