Powerful Winter Storm from the Upper Midwest into the Northeast; Severe Thunderstorms in the Midwest and Ohio Valley
A rapidly-intensifying storm is expected to bring heavy snow, blizzard conditions, and icing from the Upper Midwest through the Great Lakes and Northeast. Scattered severe thunderstorms may produce severe/damaging wind gusts and a couple of tornadoes across parts of the Midwest and lower Ohio Valley through the evening. Arctic air will expand across the central and southern U.S.. Read More >
| NWS Forecast for: Northerly Island to Calumet Harbor IL (LMZ742) Issued by: National Weather Service Chicago, IL Last Update: 306 PM CST Sun Dec 28 2025 |  |
Late This Afternoon: Southwest winds 15 to 25 kt. Areas of dense fog. Rain and slight chance of thunderstorms. Waves 1 to 3 ft. Tonight: West gales to 45 kt with occasional storm force gusts to around 50 kt. Snow showers after midnight. Freezing spray after midnight. Waves 3 to 5 ft building to 5 to 8 ft occasionally to 10 ft. Monday: West gales to 45 kt becoming northwest to 40 kt. Freezing spray. Snow showers likely in the morning, then slight chance of snow showers in the afternoon. Waves 7 to 10 ft occasionally to 13 ft. Monday Night: Northwest winds to 30 kt diminishing to 15 to 25 kt. Freezing spray. Waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 7 ft occasionally to 9 ft. Tuesday: West winds 15 to 20 kt becoming southwest 20 to 25 kt in the afternoon. Partly cloudy in the morning, then becoming mostly cloudy. Waves 3 to 5 ft subsiding to 2 to 4 ft. | |
| Zone Forecast: Northerly Island to Calumet Harbor IL (LMZ742) | |
Visit your local NWS office at: https://www.weather.gov/lot |