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.
Source: SPC. The most active tornado period of the year was the spring season (March-May). During the three month period, there 1,150 confirmed tornadoes across the country, the most on record for any three month period. The most active month of the year was April, when 748 tornadoes were confirmed. This is the most on record for any month, surpassing May 2003 when there were 550 tornadoes.