
Tornado funnels were spoted and tornado cell activity over Chicago was detected.

In Chicago, Greg Wagner leans out of a bucket truck with a chainsaw to clear a North Side road of trees, on West Hutchinson Street near North Clark. Wagner, 49, works with the Streets and Sanitation's bureau of forestry. (Tribune photo by Michael Tercha / August 24, 2007)

Chicago Streets and Sanitation workers clear North Side debris on Hutchinson Street near Clark Street on Friday morning. (Tribune photo by Michael Tercha / August 24, 2007)

In Winnetka, Mike Karnes on Friday checks out the soft trunk of his willow tree, which took out a utiliy pole during Thursday's storms. (Tribune photo by Charles Osgood / August 24, 2007)

A 70-foot-tall elm tree sits splayed open Friday at a Wilmette home on Pontiac Street. (Tribune photo by Charles Osgood / August 24, 2007)

In River Grove, the view is all water at Des Plaines River Road and Grand Avenue. (Tribune photo by Antonio Perez / August 24, 2007)

Fallen trees and branches litter Chicago's Logan Square area on the Near Northwest Side Friday. (Tribune photo by Michael Tercha / August 24, 2007)

The branches even went through the rear window of the car in Logan Square, at Logan Boulevard at Whipple Street. (Tribune photo by Michael Tercha / August 24, 2007)

The walkway leads into the water at Chicago's Montrose Harbor on Friday. Storms on Thursday pushed the docks off angle, and crews were working to fix them so owners can access their boats and check for damage. (Tribune photo by Michael Tercha / August 24, 2007)

Neighbors move a tree from the top of a car on West Hutchinson Street between North Clark Street and North Greenview Avenue in Chicago. Downed trees were blocking streets and reportedly had caused dangerous gas leaks. (Tribune photo by Nancy Stone / August 23, 2007)

Joe Crawford of Barrington wades into the flooded parking lot at the Metra train station in Barrington on Thursday after storms caused the lot to flood. (Photo for the Tribune by Ryan Rayburn / August 23, 2007)

Commuters' cars are partially submerged in the Barrington Metra parking lot after heavy storms moved through the area on Thursday. (Photo for the Tribune by Ryan Rayburn / August 23, 2007)

Heavy rains left many cars partially submerged in Barrington's Metra train lot on Thursday afternoon. (Photo for the Tribune by Ryan Rayburn / August 23, 2007)

Virginia Nardi of Chicago and her 2-year-old son Vincent seek shelter from a brutal storm that hit the 14th Street Beach in Chicago Thursday afternoon. (Tribune photo by E. Jason Wambsgans / August 23, 2007)

Beachgoers and lifeguards evacuate the 14th Street Beach to avoid the oncoming storms. (Tribune photo by E. Jason Wambsgans / August 23, 2007)

Ricardo Pacheco checks out a storm-damaged car on the 1000 block of West Dakin after a storm blew through the area on Thursday. (Tribune photo by Charles Cherney / August 23, 2007)

Debris from a roof lies in the southbound lanes of Lake Shore Drive after the storm Thursday. (Tribune photo by Charles Cherney / August 23, 2007)

Tom Saner gets a close look at a downed tree next to the History Museum in Lincoln Park at North Avenue Thursday, Aug. 23, 2007. (Tribune photo by Charles Osgood / August 23, 2007)

Collapsed scaffolding blocks a driveway between the Rehabilitation Institute of Chicago and Prentice Women's Hospital and Maternity Center in Chicago on Thursday. (Tribune photo by Zbigniew Bzdak / August 23, 2007)

Severe weather over Chicago. (CLTV photo / August 23, 2007)