A severe thunderstorm watch was in effect until 1 a.m. for Cook, DuPage, Lake, Will and other Chicago area counties.
As a result, rail, air and road travel has been compromised.
Metra has halted inbound and outbound trains on the BNSF Railway as well as the Union Pacific North and West Lines. Check metrarail.com for the latest updates.
By about 3:30 p.m., airlines had cancelled about 100 flights at O’Hare International Airport, according to the Chicago Department of Aviation.
Midway International Airport is reporting normal operations but officials there are anticipating delays
As for the roads, expressways were congested with people trying to race home from work before the storm hits. For the latest updates, check wgntv.com/traffic.
The Office of Emergency Management and Communications (OEMC) is encouraging the public to take precautions for the chance of high winds of up to 75-80 mph, very large hailstones, flash flooding and the possibility of tornadoes.
The OEMC says residents should stay indoors if possible and take shelter at the first sign of lightning or strong winds.
If you’re heading to tonight’s Blackhawks game, the OEMC urges you to take extreme caution and allow for extra travel time to and from the game.
The Chicago Tribune contributed to this report.