After a few days of warmer temperatures, the Chicago area may see some severe storms Sunday afternoon ahead of a significant cooldown.
Cloudy skies and fog are present in the mid-morning hours to start out the day with temperatures in the low 60s, with readings likely to rise slightly into the upper 60s by the early afternoon.
Rain and storms could materialize as early as 10 a.m., which would reduce the severe weather potential for the afternoon hours, when the bulk of active weather is anticipated.
During this time, wind gusts of up to 50 miles per hour in the day’s first set of storms, though a tornado threat remains very low.
The first round of storms is then expected to clear, with a brief break in between precipitation before more storms are likely to impact the region in the afternoon.
Most of the severe weather threat will be concentrated near and south of Interstate 55, with a more pronounced risk heading east towards northwest Indiana.
(1/2) There are two potential rounds for severe weather today. The first will be mid to late morning when damaging winds are possible areawide. Another round may then develop this afternoon, especially near and south of I-55 where all severe hazards will be possible. #ILwx #INwx pic.twitter.com/iiIMQf9fLM
— NWS Chicago (@NWSChicago) March 30, 2025While damaging winds and small hail are the primary threat in the first system of the day, large hail and tornadoes are possible during the second round of storms, expected to occur roughly between noon and 5 p.m.
Almost all of northwest Indiana, along with parts of eastern Kankakee and Will counties, are at an “enhanced risk” for severe weather, while most of the Chicago area is at a “slight risk.”
Lake and McHenry counties, along with Kenosha County, Wisconsin, are at a “marginal risk” Sunday.
(2/2) Here are additional details for individual severe weather hazards during the 12-5 PM CDT window this afternoon. Damaging winds are the primary threat, but large hail and tornadoes are also possible. Have a plan ready to go if a warning is issued for your area! #ILwx #INwx pic.twitter.com/XvZrS75YC0
— NWS Chicago (@NWSChicago) March 30, 2025Wind gusts from 60 to 75 miles per hour are possible during the afternoon window of severe storms, with hail up to two inches in diameter likely as well.
There is no threat for flash flooding, while an isolated tornado from the system remains possible.
Temperatures will then plummet this evening into the overnight hours, creating a wintry start to the work week, with highs only in the mid 40s tomorrow.
That brisk weather will persist through Tuesday ahead of another chance of severe storms on Wednesday as temperatures rebound to the high 60s.
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