Severe Weather Strikes South Suburbs of Chicago, Leaving Thousands without Power

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Emma Powell
Aug 12, 2026 Chicago

Tornadoes Impact Chicago Area as Customers Endure Power Outages

Severe weather battered the south suburbs of Chicago on Tuesday, resulting in the confirmation of three tornadoes and leaving over 142,000 ComEd customers without power as of Wednesday morning.

The National Weather Service issued a severe thunderstorm watch for areas including Joliet, Kankakee, and DeKalb, which remains effective until 1 p.m. on Wednesday. Although forecasters have indicated that the severity of the impending thunderstorms will likely be less intense than those seen Tuesday, meteorologist Gino Izzi warned that gusty winds could reach speeds of up to 70 miles per hour in certain areas, amplifying safety concerns.

A line of thunderstorms is expected to pass through the Chicago area late Wednesday morning, potentially bringing rainfall amounts between a quarter and a half inch closer to the city.

According to the ComEd outage map, power restoration efforts were ongoing, with many customers still grappling with outages after falling victim to the tornadoes, which produced wind speeds ranging from 86 to 110 mph. The storm activity was confirmed to have caused significant destruction in southern Cook County and eastern Will County, as well as in the Mokena area, also located in Will County.

Rick Johnson, a Mokena resident of more than three decades, expressed his frustration and concern, noting that his home lost power during Tuesday's storm, just as it had for four days during a similar weather system last month. “It’s been an odd year,” he commented, reflecting on the increasing frequency and potency of storms impacting the area.

As of Wednesday morning, the region remains on high alert for potential additional severe weather, with authorities advising residents to stay prepared and vigilant. While some improvements in power restoration have been reported, the full recovery of service is still underway for many households.

The situation serves as a reminder of the evolving climate patterns and the significant impacts of severe weather, particularly in communities that frequently experience such events. Recovery efforts are ongoing, and residents continue to face uncertainties stemming from this summer of destructive storms.

As authorities track the development of new storms, local residents are advised to stay informed and heed safety warnings issued by the National Weather Service.