Potentially severe storms capable of producing wind gusts over 75 mph began moving through the Chicago area late Monday morning, triggering weather alerts for a number of counties as the storms moved through northern Illinois and northwestern Indiana.
Intensified storms brought threats of potentially damaging winds, hail, lightning, heavy downpours and possibly even a brief tornado.
Severe thunderstorm warnings were issued across the region as thunderstorms moved west to east across the metro area and into northwest Indiana.
A severe thunderstorm warning remained in effect for southeast Will and northeast Kankakee counties in Illinois, as well as Newton, Porter, Lake and Jasper counties in northwest Illinois. ‘Indiana were under a thunderstorm warning until 2 p.m. CT. With this system, forecasters highlighted a threat of “tornado-like winds”.
“This is a very dangerous storm with tornado-like wind speeds moving through Peotone, Beecher, Grand Park and northwestern Indiana. The winds are uprooting trees and damaging structures. Take cover if you are in this warning!” the National Weather Service tweeted at the time.
Porter, Lake and Jasper counties in Indiana have been extended until 2:30 p.m. CT.
The entire Chicago area was under a severe thunderstorm watch until 4:00 p.m. CT, but the watch was canceled for almost all counties except for Newton and Jasper counties in northwest Indiana . Meanwhile, LaPorte County in northwest Indiana is under surveillance until 7 p.m. CT.
The system will likely move quickly, with much of the region seeing storms moving before 6 p.m.
Potentially severe storms capable of producing wind gusts over 75 mph began moving through the Chicago area late Monday morning, triggering weather alerts for a number of counties.
At 2 p.m., reports of downed trees and wind damage could be seen from outlying northwest suburbs to southern suburbs. In South Elgin, fire officials urged caution as crews responded to “many downed wires” near South Elgin Boulevard and Walnut Street. Damage extended to Kankakee where authorities also reported downed power lines and poles.
Metra reported delays for some trains on the Milwaukee District North Line “due to a tree on the tracks.”
Evanston police said the storms caused power outages and downed trees that could disrupt traffic, particularly near Central Street where the damage would be “heaviest”.
As of 12:45 p.m., O’Hare International Airport was seeing inbound flights delayed by an average of almost 90 minutes, while all inbound flights were “held at origin” until 1:15 p.m. CT. Meanwhile, Midway Airport saw all incoming flights held at origin until 1:30 p.m. CT.
The Chicago area was at “heightened” risk of severe weather, with the biggest threats being frequent lightning strikes, damaging winds of over 75 miles per hour, quarter-size hail and heavy rain, which could eventually lead to localized flooding.
And while tornado risk remains low, it couldn’t be ruled out, NBC 5 Storm Team said.
The greatest risk of extreme conditions, especially stronger wind gusts, was north of Interstate 80.
While Monday’s temperatures accompanying the storm will remain warm and sweltering with highs in the 80s, much calmer weather is expected to set in over the week.
Dry, sunny skies and highs between the 70s and 80s are expected not only through the rest of the work week, but also over Labor Day weekend.
Residents are encouraged to download the NBC Chicago app to receive the latest severe weather alerts and live radar imagery from across the region.