9 tornadoes confirmed by National Weather Service

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Preliminary surveys by the National Weather Service have confirmed at least nine tornadoes touched down in northern Illinois late Monday.

They are as follows:

  • An EF-3 in Coal City
  • An EF-2 in Woodhaven Lakes and Sublette
  • An EF-1 in Whiteside County to Lee County near Harmon, Illinois.
  • An EF-1 in Harmon, Illnois.
  • An EF-1 in Mendota
  • An EF-1 near Ottawa
  • An EF-1 northeast of Mazon
  • An EF-1 near Bourbonnais to Bradley
  • An EF-0 near Herscher

A weather service report says assessments are continuing, and the number of confirmed tornadoes will likely increase.

The report says the tornadoes were caused by one long-tracked supercell thunderstorm.

The heaviest damage was in Coal City and nearby Braidwood, caused by an EF-3 twister, and at a campground in Sublette, caused by an EF-2 tornado.

The weather service says the tornado that hit Coal City had winds up to 160 mph and was the strongest in the Chicago metro area since an EF-5 twister hit Plainfield in 1990.

No deaths or life-threatening injuries have been reported, although the storms severely damaged homes and forced first responders to pull survivors from basements.

More details at Chicago Weather Center.

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1 Comment

  • Bob Matson

    Hi Tom, tornado not on ground in Monmouth, but Cameron, 5 mi. east, had a 700 yard wide tornado, which was a multi-vortex. Check Kholby Martin Monmouth, IL tornado on YouTube!! We miss You here in Mason City, IA.