Alerts from NWS Chicago IL (UNOFFICIAL)
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chi.nws-bot.us
Alerts from NWS Chicago IL (UNOFFICIAL)
@chi.nws-bot.us
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Winter Weather Advisory issued December 1 at 8:36PM CST until December 2 at 12:00AM CST by NWS Chicago IL
Additional Details Here.
* WHAT...Snow and winter driving conditions occurring. Total snow accumulations between 1 and 4 inches, highest south of the Kankakee River Valley. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. * WHAT...Snow and winter driving conditions occurring. Total snow accumulations between 1 and 4 inches, highest south of the Kankakee River Valley. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...Until 3 AM CST /4 AM EST/ Tuesday. * IMPACTS...Plan on slippery road conditions.
December 2, 2025 at 2:45 AM
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Winter Weather Advisory issued December 1 at 2:31PM CST until December 2 at 12:00AM CST by NWS Chicago IL
Additional Details Here.
* WHAT...Snow and winter driving conditions occurring. Total snow accumulations between 1 and 4 inches, highest south of the Kankakee River Valley. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the evening commute today. * WHAT...Snow and winter driving conditions occurring. Total snow accumulations between 1 and 4 inches, highest south of the Kankakee River Valley. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...Until 3 AM CST /4 AM EST/ Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the evening commute today.
December 1, 2025 at 8:45 PM
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Winter Weather Advisory issued December 1 at 11:03AM CST until December 2 at 12:00AM CST by NWS Chicago IL
Additional Details Here.
* WHAT...Snow and winter driving conditions expected. Total snow accumulations between 1 and 4 inches, with the highest amounts generally near and south of the Kankakee River. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...From 2 PM this afternoon to midnight CST tonight. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will likely impact the evening commute today. * WHAT...Snow and winter driving conditions expected. Total snow accumulations between 1 and 4 inches, with the highest amounts generally near and south of the Kankakee River. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 4 PM CST /5 PM EST/ this afternoon to 3 AM CST /4 AM EST/ Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will likely impact the evening commute today.
December 1, 2025 at 5:15 PM
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Special Weather Statement issued December 1 at 2:50AM CST by NWS Chicago IL
Additional Details Here.
Shallow freezing fog is possible early this morning outside of Chicago. The freezing fog may be locally dense. If traveling, be prepared for sudden changes in visibility. Where locally dense fog develops, patchy slick spots may also occur due to the sub- freezing temperatures.
December 1, 2025 at 9:00 AM
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Winter Weather Advisory issued December 1 at 1:54AM CST until December 2 at 12:00AM CST by NWS Chicago IL
Additional Details Here.
* WHAT...Snow expected. Total snow accumulations between 2 and 4 inches with locally higher amounts possible south of Interstate 80. * WHERE...Portions of central, east central, north central, and northeast Illinois. * WHEN...From 2 PM this afternoon to midnight CST tonight. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday evening commute. * WHAT...Snow expected. Total snow accumulations between 2 and 4 inches with locally higher amounts possible. * WHERE...Benton, Jasper, Lake IN, Newton, and Porter Counties. * WHEN...From 4 PM CST /5 PM EST/ this afternoon to 3 AM CST /4 AM EST/ Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday evening commute.
December 1, 2025 at 8:00 AM
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Special Weather Statement issued November 30 at 10:52PM CST by NWS Chicago IL
Additional Details Here.
Shallow freezing fog is developing late this evening outside of Chicago, some of which is locally dense. The fog may expand in coverage as temperatures continue to cool overnight. If traveling, be prepared for sudden changes in visibility. Where locally dense fog develops, patchy slick spots may also occur due to the sub- freezing temperatures.
December 1, 2025 at 5:00 AM
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Small Craft Advisory issued November 30 at 10:02PM CST until December 1 at 3:00AM CST by NWS Chicago IL
Additional Details Here.
* WHAT...Significant waves to 6 ft occasionally to 8 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 AM CST Monday. * IMPACTS...Conditions will be hazardous to small craft. * WHAT...Significant waves to 9 ft occasionally to 12 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 7 AM CST Monday. * IMPACTS...Conditions will be hazardous to small craft.
December 1, 2025 at 4:15 AM
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Special Weather Statement issued November 30 at 2:50PM CST by NWS Chicago IL
Additional Details Here.
Lake effect snow showers will spread across parts of Porter County this afternoon. While accumulations are expected to remain under an inch or two, below-freezing temperatures may result in slippery travel into this evening.
November 30, 2025 at 9:00 PM
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Small Craft Advisory issued November 30 at 2:14PM CST until December 1 at 3:00AM CST by NWS Chicago IL
Additional Details Here.
* WHAT...Northwest winds to 25 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 AM CST Monday. * IMPACTS...Conditions will be hazardous to small craft. * WHAT...Northwest winds to 30 kt and significant waves to 10 ft occasionally to 13 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 7 AM CST Monday. * IMPACTS...Conditions will be hazardous to small craft.
November 30, 2025 at 8:30 PM
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Winter Weather Advisory issued November 30 at 11:43AM CST until November 30 at 12:00PM CST by NWS Chicago IL
Additional Details Here.
While some pockets of blowing snow may persist in rural and open areas, the threat for hazardous conditions is ending. The Winter Weather Advisory will expire at Noon CST.
November 30, 2025 at 5:45 PM
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Small Craft Advisory issued November 30 at 9:46AM CST until November 30 at 10:00PM CST by NWS Chicago IL
Additional Details Here.
* WHAT...Northwest winds to 30 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 10 PM CST this evening. * IMPACTS...Conditions will be hazardous to small craft. * WHAT...Northwest winds to 30 kt and significant waves to 11 ft occasionally to 14 ft. Occasional gale force gusts to 35 kt this morning. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 7 AM CST Monday. * IMPACTS...Conditions will be hazardous to small craft.
November 30, 2025 at 4:00 PM
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Small Craft Advisory issued November 30 at 3:16AM CST until November 30 at 10:00PM CST by NWS Chicago IL
Additional Details Here.
* WHAT...Northwest winds to 30 kt and significant waves to 7 ft occasionally to 9 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 10 PM CST this evening. * IMPACTS...Conditions will be hazardous to small craft. * WHAT...Northwest winds to 30 kt and significant waves to 11 ft occasionally to 14 ft. Occasional gale force gusts to 35 kt this morning. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 7 AM CST Monday. * IMPACTS...Conditions will be hazardous to small craft.
November 30, 2025 at 9:30 AM
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Winter Weather Advisory issued November 30 at 1:51AM CST until November 30 at 12:00PM CST by NWS Chicago IL
Additional Details Here.
* WHAT...Snow and patchy blowing snow. Additional snow accumulations up to one inch. Winds gusting as high as 35 mph. * WHERE...Portions of north central and northeast Illinois and northwest Indiana. * WHEN...Until noon CST today. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility.
November 30, 2025 at 8:00 AM
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Small Craft Advisory issued November 29 at 10:17PM CST until November 30 at 10:00PM CST by NWS Chicago IL
Additional Details Here.
* WHAT...South winds to 30 kt through this evening, becoming northwest to 30 kt Sunday. Occasional 35 kt gales possible this evening. Significant waves to 10 ft occasionally to 13 ft. * WHERE...Winthrop Harbor to Calumet Harbor, IL. * WHEN...Until 10 PM CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. * WHAT...South winds to 30 kt through this evening, becoming northwest to 30 kt Sunday. Occasional gales to 35 kt this evening and again Sunday morning. Significant waves to 11 ft occasionally to 14 ft. * WHERE...Calumet Harbor, IL to Michigan City, IN. * WHEN...Until 7 AM CST Monday. * IMPACTS...Conditions will be hazardous to small craft.
November 30, 2025 at 4:30 AM
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🚨 Winter Storm Warning issued November 29 at 9:41PM CST until November 30 at 6:00AM CST by NWS Chicago IL 🚨
Additional Details Here.
* WHAT...Continuing snowfall. Additional snow accumulations up to three inches possible. Highest additional accumulations expected near the Wisconsin state line. Winds gusting as high as 35 mph. * WHERE...Portions of north central and northeast Illinois and northwest Indiana. * WHEN...Until 6 AM CST Sunday. * IMPACTS...Roads, and especially bridges and overpasses, will be slick and hazardous. Plan on slippery road conditions. * ADDITIONAL DETAILS...Snowfall rates will ease late this evening and overnight. Some blowing and drifting snow is possible tonight into tomorrow in open areas. * WHAT...Lingering wet snow. Additional snow accumulations up to half an inch possible. Winds gusting as high as 35 mph. * WHERE...Jasper and Newton Counties. * WHEN...Until midnight CST tonight. * IMPACTS...Roads, and especially bridges and overpasses, will be slick and hazardous. Plan on slippery road conditions. * ADDITIONAL DETAILS...Some blowing and drifting snow is possible. The snow will likely transition to rain/drizzle late this evening.
November 30, 2025 at 3:45 AM
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🚨 Winter Storm Warning issued November 29 at 3:01PM CST until November 30 at 6:00AM CST by NWS Chicago IL 🚨
Additional Details Here.
* WHAT...Heavy snow expected. Additional snow accumulations of 3 to 6 inches expected. Southeast winds gusting to 30 mph could lead to pockets of blowing show. * WHERE...Portions of central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 6 AM CST Sunday. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Snowfall rates will ease late this evening and overnight. * WHAT...Heavy snow. Additional snow accumulations between 2 and 5 inches. Winds gusting as high as 35 mph. * WHERE...In Illinois, Ford and Iroquois Counties. In Indiana, Benton, Jasper, and Newton Counties. * WHEN...Until midnight CST /1 AM EST/ tonight. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...The highest snowfall rates are expected this afternoon, with some blowing and drifting snow possible. The snow will likely transition to drizzle late this evening.
November 29, 2025 at 9:15 PM
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Small Craft Advisory issued November 29 at 2:40PM CST until November 30 at 10:00PM CST by NWS Chicago IL
Additional Details Here.
* WHAT...Southeast winds to 30 kt through this evening, becoming northwest to 30 kt Sunday. Occasional 35 kt gales possible this evening. Significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 10 PM CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. * WHAT...Southeast winds to 30 kt through this evening, becoming northwest to 30 kt Sunday. Occasional gales to 35 kt this evening and again Sunday morning. Significant waves to 11 ft occasionally to 14 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 7 AM CST Monday. * IMPACTS...Conditions will be hazardous to small craft.
November 29, 2025 at 8:45 PM
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🚨 Winter Storm Warning issued November 29 at 10:33AM CST until November 30 at 6:00AM CST by NWS Chicago IL 🚨
Additional Details Here.
* WHAT...Heavy snow expected. Total snow accumulations between 6 and 10 inches. Locally higher amounts possible northwest of an Ottawa to Aurora to Waukegan line. Southeast winds gusting to 30 mph. * WHERE...Portions of central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 6 AM CST Sunday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...The highest snowfall rates are expected this afternoon, with some blowing and drifting snow possible. The snow may mix with or transition to drizzle east of Interstate 55 this evening. * WHAT...Heavy snow expected. Total snow accumulations between 5 and 10 inches. Southeast winds gusting as high as 30 mph. * WHERE...In Illinois, Ford and Iroquois Counties. In Indiana, Benton, Jasper, and Newton Counties. * WHEN...Until midnight CST /1 AM EST/ tonight. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...The highest snowfall rates are expected this afternoon, with some blowing and drifting snow possible. The snow will likely transition to drizzle this evening.
November 29, 2025 at 4:45 PM
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Small Craft Advisory issued November 29 at 9:34AM CST until November 30 at 10:00PM CST by NWS Chicago IL
Additional Details Here.
* WHAT...Southeast winds to 30 kt today and northwest winds to 30 kt Sunday. Significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 10 PM CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. * WHAT...Southeast winds to 30 kt today and northwest winds to 30 kt Sunday. Occasional gale gusts to 35 kt Sunday. Significant waves to 11 ft occasionally to 14 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 7 AM CST Monday. * IMPACTS...Conditions will be hazardous to small craft.
November 29, 2025 at 3:45 PM
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Small Craft Advisory issued November 29 at 2:58AM CST until November 30 at 10:00PM CST by NWS Chicago IL
Additional Details Here.
* WHAT...Southeast winds to 30 kt today and northwest winds to 30 kt Sunday. Significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 9 AM this morning to 10 PM CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. * WHAT...Southeast winds to 30 kt today and northwest winds to 30 kt Sunday. Occasional gale gusts to 35 kt Sunday. Significant waves to 11 ft occasionally to 14 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 9 AM this morning to 7 AM CST Monday. * IMPACTS...Conditions will be hazardous to small craft.
November 29, 2025 at 9:00 AM
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🚨 Winter Storm Warning issued November 29 at 2:38AM CST until November 30 at 6:00AM CST by NWS Chicago IL 🚨
Additional Details Here.
* WHAT...Heavy snow expected. Total snow accumulations between 6 and 10 inches. Locally higher amounts possible northwest of an Ottawa to Aurora to Waukegan line. Southeast winds gusting to 30 mph. * WHERE...Portions of central, north central, and northeast Illinois and northwest Indiana. * WHEN...Until 6 AM CST Sunday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...The highest snowfall rates are expected this afternoon, with some blowing and drifting snow possible. The snow may mix with or transition to drizzle east of Interstate 55 this evening. * WHAT...Heavy snow expected. Total snow accumulations between 5 and 9 inches. Southeast winds gusting as high as 30 mph. * WHERE...In Illinois, Ford and Iroquois Counties. In Indiana, Benton, Jasper, and Newton Counties. * WHEN...Until midnight CST /1 AM EST/ tonight. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...The highest snowfall rates are expected this afternoon, with some blowing and drifting snow possible. The snow will likely transition to drizzle this evening.
November 29, 2025 at 8:45 AM
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Small Craft Advisory issued November 28 at 10:01PM CST until November 30 at 10:00PM CST by NWS Chicago IL
Additional Details Here.
* WHAT...Southeast winds to 30 kt becoming northwest Sunday morning and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 9 AM Saturday to 10 PM CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. * WHAT...Southeast winds to 30 kt becoming northwest Sunday morning and significant waves to 11 ft occasionally to 14 ft expected. A few gales to 35 kt possible Sunday morning. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 9 AM Saturday to 7 AM CST Monday. * IMPACTS...Conditions will be hazardous to small craft.
November 29, 2025 at 4:15 AM
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🚨 Winter Storm Warning issued November 28 at 9:49PM CST until November 30 at 6:00AM CST by NWS Chicago IL 🚨
Additional Details Here.
* WHAT...Heavy snow expected. Total snow accumulations between 6 and 10 inches. Locally higher amounts possible northwest of an Ottawa to Aurora to Waukegan line. Southeast winds gusting to 30 mph. * WHERE...Portions of central, north central, and northeast Illinois and northwest Indiana. * WHEN...From 3 AM Saturday to 6 AM CST Sunday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...The highest snowfall rates are expected Saturday afternoon, with some blowing and drifting snow possible. The snow may mix with or transition to drizzle east of Interstate 55 Saturday evening. * WHAT...Heavy snow expected. Total snow accumulations between 5 and 9 inches. Southeast winds gusting as high as 30 mph. * WHERE...In Illinois, Ford and Iroquois Counties. In Indiana, Benton, Jasper, and Newton Counties. * WHEN...From 3 AM CST /4 AM EST/ Saturday to midnight CST /1 AM EST/ Saturday Night. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...The highest snowfall rates are expected Saturday afternoon, with some blowing and drifting snow possible. The snow will likely transition to drizzle Saturday evening.
November 29, 2025 at 4:00 AM
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🚨 Winter Storm Warning issued November 28 at 2:59PM CST until November 30 at 6:00AM CST by NWS Chicago IL 🚨
Additional Details Here.
* WHAT...Heavy snow expected. Total snow accumulations between 6 and 10 inches. Locally higher amounts possible northwest of an Ottawa to Aurora to Waukegan line. Southeast winds gusting to 30 mph. * WHERE...Portions of central, north central, and northeast Illinois and northwest Indiana. * WHEN...From 3 AM Saturday to 6 AM CST Sunday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...The highest snowfall rates are expected Saturday afternoon, with some blowing and drifting snow possible. The snow may mix with or transition to drizzle east of interstate 55 Saturday evening. * WHAT...Heavy snow expected. Total snow accumulations between 5 and 9 inches. Southeast winds gusting as high as 30 mph. * WHERE...In Illinois, Ford and Iroquois Counties. In Indiana, Benton, Jasper, and Newton Counties. * WHEN...From 3 AM CST /4 AM EST/ Saturday to midnight CST /1 AM EST/ Saturday Night. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...The highest snowfall rates are expected Saturday afternoon, with some blowing and drifting snow possible. The snow will likely transition to drizzle Saturday evening.
November 28, 2025 at 9:15 PM
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Small Craft Advisory issued November 28 at 2:37PM CST until November 28 at 3:00PM CST by NWS Chicago IL
Additional Details Here.(2/2)
* WHAT...Southeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 9 AM Saturday to 10 PM CST Sunday. * IMPACTS...Conditions will be hazardous to small craft.
November 28, 2025 at 8:45 PM