More than 600 flights were canceled Memorial Day in Chicago as severe weather tore through much of the area.
As of 10:56 p.m. Monday, more than 551 flights were canceled at O'Hare Airport and at least 76 were canceled at Midway Airport. Delays of at least 29 minutes were expected at O'Hare and delays of about 30 minutes were expected at Midway.
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All tornado and severe thunderstorm warnings and/or watches were canceled in the Chicago area and NW Indiana, according to the National Weather Service Monday evening.
"People and animals outdoors will be injured," the National Weather Service said in an early alert.
Any severe storms that developed in this system were said to bring golf ball-sized hail, wind gusts of up to 70 mph, torrential downpours, lightning and possibly even tornadoes.
The storms are expected to weaken by around midnight.
Temperature highs varied greatly depending on the location Monday. Along the lakefront, highs will sit in the mid to upper 50s, but inland temperatures will reach into the 70s. Some locations south of Interstate 80 could see temps in the 80s.
Another round of potentially severe evening storms will be possible Tuesday.