The National Weather Service is warning about severe thunderstorms Monday and Tuesday in the Chicagoland area, with tornadoes possible during Tuesday’s storms.
The National Weather Service (NWS) issued a hazardous weather outlook Monday morning.
The outlook includes Lake, McHenry, Boone, Winnebago, Cook, DuPage, Kane, Will, Ogle, Lee, DeKalb, LaSalle, Kendall, Grundy, Kankakee, Livingston, Iroquois and Ford counties.
Scattered thunderstorms are expected to develop midday Monday and continue into the afternoon, the NWS said.
A few of the storms could become severe. The main threats are large hail, up to half dollar in size, and locally damaging winds, possibly over 60 mph.
The highest probabilities for severe weather appear to be north of Interstate 80 from 12 p.m. to 7 p.m., the outlook said.
Thunderstorms will be capable of producing torrential downpours which could lead to some localized flooding, particularly in more suburban and urban areas.
The NWS said there is a chance for thunderstorms early Tuesday morning, mainly across northern Illinois northwest of Interstate 55, and a slight chance of thunderstorms area-wide Tuesday afternoon.
The threat of severe weather from those storms will be low.
Additional thunderstorms are likely Tuesday evening, some of which could become severe. There is a potential for damaging winds and brief tornadoes, the NWS said.
“While there is a threat of severe weather across the entire outlook area, the severe weather threat appears greatest near and west of the Interstate 39 corridor,” the outlook said.
Forecasters said they recommend residents have multiple ways to get weather warnings and take cover if one is issued.