Thousands without power in Chicago area following tornado, thunderstorm warnings (2024)

Downed trees and powerlines from Sunday's severe weather has left more than 15,000 ComEd customers without power as of 6 a.m. Monday morning.

According to ComEd's outage map, as of 6:30 a.m., 17,797 customers across the Chicago area were without power. Earlier Monday morning, that number was lower. By 7 a.m., that number had dipped to 15,980.

The map showed the majority of outages was in Cook County, where more than 6,000 customers were affected. In Will County, more than 2,000 customers were without power. Lake, LaSalle, Kane and DuPage County also saw more than 1,000 customers without power.

Downed trees were also causing some traffic impacts Monday morning, NBC 5 traffic reporter Kye Martin said, with two downed trees blocking lanes of DuSable Lake Shore Drive, and a downed tree that caused delays on the BNSF Metra line.

The aftermath of the storm has also left 41 flights at Chicago's O'Hare International Airport canceled, according to the website flychicago.com.

Weekend storm damage stretched from across the suburbs and the city. In Gage Park, NBC 5 photographer George Mycyk captured nearly an entire block with downed trees.

More chances for strong-to-severe storms and extreme heat and humidity were in Chicago's Monday forecast, the NBC 5 Storm Team said.

"The storms could certainly pack a punch, just like we saw last night," NBC 5 Meteorologist Alicia Roman said.

More chances for strong-to-severe weather

While Monday's daytime hours were expected to be dry, another round of strong-to-severe storms could move in from the west beginning around 5 p.m., Roman said, with a small chance of an isolated storm in the area around 3 or 4 p.m.

According to Roman, the storms were likely to begin in the far western part of the state. By around 8 or 9 p.m., those storms were expected to move into the Chicago area.

According to a National Weather Service alert, the greatest threat Monday's storms carry are damaging winds. However, large hail and the chance for tornadoes were also possible, the alert said.

Additionally, "torrential" downpours may cause flash flooding," the alert said.

Storms were expected to move into Northwest Indiana by around 10 p.m., Roman said, with storms expected to end around 1 p.m.

Heat advisory goes into effect

Monday will also see a hot day Roman said, with high temperatures in the 90s, with even higher heat indices.

"Most locations in the low-to-mid 90s," Roman said. "That's tolerable. What's not tolerable is the extreme humidity," Roman said.

According to Roman dewpoints Monday were expected to be between 70 and 75 degrees. Those high humidity levels would result in "feels-like" temperatures of between 100 and 110 degrees, with areas to the west and southeast of Chicago expected to see the highest heat indices.

Chicago to opencooling centers Monday, feels-like temps near 110 degrees possible

Beginning at 8 a.m., a heat advisory will go into effect for DeKalb, LaSalle, Kendall, Grundy, Northern Will and Kankakee Counties, the NWS said in an alert.

"Hot temperatures and high humidity may cause heat illnesses to occur," the alert said. "Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors."

According to the NWS, the advisory was scheduled to expire at 7 p.m. Monday.

A full forecast for the Chicago area this week can be found here.