Chicagoland experienced unseasonably warm temperatures on Sunday, with highs reaching the upper 70s and low 80s. This warm air mass, significantly above the average high of 58 degrees for April 12th, also brought increased humidity, creating conditions favorable for developing thunderstorms.

Monday's Low Severe Weather Risk

While Monday is expected to be partly to mostly cloudy with only a slight chance of isolated thunderstorms, a Marginal Risk for severe storms has been issued for areas north of I-80. This risk extends from Monday afternoon through Monday night, with damaging winds and hail being the primary concerns should strong storms develop.

Tuesday and Wednesday: Peak Severe Weather Threat

Tornado Potential Looms

The most significant threat of severe weather is forecast for Tuesday and Wednesday. Although precise details are still emerging, all severe storm hazards, including tornadoes, are possible. Daytime temperatures are expected to remain warm, in the 70s and 80s, providing the energy for these potentially destructive storms.

Preparedness is Key

Residents are urged to stay informed about the latest weather updates and be prepared to take immediate action if tornado warnings are issued. This includes having a safety plan and identifying a secure shelter. Staying updated through NOAA weather radio or smartphone alerts is crucial for making informed decisions and ensuring safety.

Late Week Outlook

Thursday is expected to be partly sunny with highs in the mid-70s, though some showers and storms may linger. Friday could see highs near 80 degrees, with additional storms possible Friday night into Saturday, continuing the need for vigilance and preparedness.