Murphysboro, IL F4 Tornado – December 18, 1957

A total of 25 tornadoes occurred on December 17, 1957, all in Illinois or Missouri. Two were later rated F4 and 1 was given an F5 rating. In this summary, we look at an F4 that traveled close to 30 miles through parts of Jackson, Williamson and Franklin Counties in Illinois. Per Thomas Grazulis in Significant Tornadoes, the path followed closely to a section of the great Tri-State Tornado of March 18, 1925.

Mason City-Hudson, IL F2 Tornado – November 13, 1951

This tornado (later rated F2) skipped its way approximately 50 miles through parts of Mason, Tazewell and McLean Counties in Illinois. The Climatological Data National Summary (CDNS) entry for this event is very limited on detail on the damage and this tornado is not included in Significant Tornadoes by Thomas Grazulis so damage reports came from area newspapers.