Saturday has been confirmed by meteorologists at the National Weather Service’s Chicago office, agency said Sunday.
When using the Enhanced Fujita scale, the universal method for showing a tornado’s strength. In addition, there were multiple reports of wind damage in the Rockford area, but experts attribute that to “straight line southeast” and not a tornado.
- The first tornado begins at 4:44 pm in DuPage County. Known as the Oak Brook tornado, the EF-0 tornado sustained maximum southeast of 75 mph as it snaked its 1.9-mile path southwest of Oak Brook, moving to the northeast, according to the weather service. The tornado had a maximum width of 60 yards and touched down at the Hilton Hotel and Willow Crest Golf Club and ended in Central Park in Oak Brook, forecasters said. “Damage along the path was characterized by snapped trees and small uprooted trees, as well as partial roof loss to an outbuilding. The tornado was on the ground for about three minutes, ”according to a weather service summary.
- The second tornado is about an hour later, at 5:54 pm in Boone County and is known as the Timberlane tornado, also an EF-0, meteorologists said. It was on the ground for about one minute and had a maximum sustained winds of 80 mph, experts said. He touched down the intersection of Briar Cliff Street “and lifted over Candlewick Lake,” according to the weather service. “Several softwood trees were uprooted and snapped at the start of the tornado path and laid in a convergent pattern. In addition, several floating docks were thrown across Candlewick Lake. ”
- The third tornado is in Boone County, near 80 miles northwest of Chicago. It was given a rating of EF-U, for “unknown.” The weather service explained the rating by saying: tornado may be assigned the EF-Unknown (EF-U) rating. ” The Capron tornado was verified “based on two photos shared by the National Weather Service from the public,” meteorologists said. The “brief tornado touched down” in the open field near the intersection of Coon Trail and Capron roads just south of the Wisconsin state line. There is no known damage caused by the tornado. ”
The straight line southeast reported in Rockford appears to have caused more damage than the tornadoes, according to preliminary information from the weather service. The assessment was “based on a review of drone footage provided by the Rockford Fire Department and radar data from both the Chicago and Milwaukee NWS radars,” officials said.
“It was determined that the intersection of 9th and Broadway streets southeast of downtown Rockford. These winds caused the loss of a metal roof to the south building of Broadway Street, which results in the collapse of the west- and south-facing walls, ”according to the weather service.
In addition, roofing material from the building was blown off at the 9th Street along with additional roof damage in the vicinity. The damage orientation was consistent with a divergent area, ”the weather service said.
For more information on the forecast, visit the Tribune’s weather page and check back for updates.