Background: Approximately twenty-five years ago, RIDOT stopped using granite curbing as a. standard, with the exception of bridge projects. The primary motivation was cost, as precast. concrete, the replacement, was cheaper to purchase and install.
Longest damage path and duration: The Tri-State Tornado. The longest recorded tornado journey in U.S. history was the Tri-State Tornado of 1925, which traveled almost 220 miles across southeastern Missouri, southern Illinois, and southwestern Indiana during its 3.5-hour life. The average tornado travels about 5 miles.
For the first time since deadly tornadoes ripped through central Illinois in November 2013, the National Weather Service tested sirens as part of a statewide drill. This is severe weather preparedness week in Illinois. Most towns regularly test their tornado sirens on the first Tuesday of the month. Today, Will County Emergency Management officials also tested their severe weather plans and equipment.