In Joliet, strong winds knocked large trees onto homes Saturday. Neighbors picked up tree branches and tried to unclog storm drains while flash flooding persisted.
Severe storm moves through Joliet causing damage
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Amy Jalata and her family were hiding in the basement when a tree smashed onto their roof.
"I thought no one would help us but I saw people coming and was touched by their kindness," she said.
Across the Chicagoland area, crews worked to restore power after lines were torn down during the storm.
Hail hammered homes and left behind more damage.
Severe Storm moves through Shorewood causing damage
In Crest Hill, high winds ripped the roof off a building, leaving large pieces of debris and shingles behind.
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A viewer near Will County spotted possibly funnel clouds during a now expired Tornado Watch.
ABC7's Storm Tracker captured downpours and heavy traffic across the Chicago area as drivers were caught in the severe storms.
RELATED: Get the latest AccuWeather reports from ABC 7 Chicago
In Mundelein, rain and thunder were followed by sunshine. Meanwhile, a beautiful rainbow in Chicago capped off a day of severe weather across Illinois.
Heavy rainfall flooded streets in northwest Indiana as well.
On the toll road in Hammond, drivers struggled with visibility during the storms. Some pulled over to the side of the road, waiting for the system to move through.
The high winds blew the awning off of a Speedway Gas Station in Hammond.
Chicago Weather: Severe storms cause damage, power outages, flash flooding across Illinois, northwest Indiana
Residents said they haven't seen rain like this in a long time.
"I just stayed away from the windows because of all the hail and wind, and if a tree would've blown down," said resident Anthony Vicari.
Chicago Weather: Severe storms cause damage, power outages, flash flooding across Illinois, northwest Indiana
"I looked down the street, everyone was scrambling to try to get their cars out," said resident Edgar Gomez. "It was literally so fast, the water coming up, that there was nothing you could do about it."
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Saturday's severe weather comes after much of the Chicago area saw significant flooding last weekend.
RELATED: Chicago Weather: High water levels continue to plague Willis Tower; close roads in city, suburbs
That flooding was pervasive, shutting off power at Chicago's Willis Tower and causing suburban residents to dry out their basements.
WATCH: Suburban residents waiting for flood waters to recede
Suburban residents still waiting for flood waters to recede
Now crews are preparing for more cleanup on Sunday.