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.
the highest temperature reported in illinois was 117 f in east st louis on july 14 1954 the lowest temperature reported in illinois was 36 f in congerville on january 5 1999 the most rainfall from a single event was 16 94 inches in aurora during a 24 hour period spanning july 17 18 1996