MADISON COUNTY, IL (KTVI)-The National Weather Service has confirmed that some of the damage done in Madison and Bond Counties in Illinois during severe weather last Thursday was caused by a tornado.
The tornado touched down northeast of Highland and remained on the ground for about 12 miles before lifting southwest of Greenville. Preliminary reports show that, at its peak, the tornado had winds around 105 mph and was rated an EF1. As the tornado tracked into Bond County, the damage was rated at an EF0, meaning the winds had lessened to between 65 and 85mph.
The NWS is finalizing its investigation into this storm and a final report will be issued in the coming days.
The Enhanced Fujita Scale, or EF-Scale, uses 28 indicators to estimate the degree of damage from a storm, which is then used to estimate the wind speed that led to that damage.