Chicago Warnings, Watches and Advisories

Winter Weather Advisory issued November 12 at 7:30PM CST until November 13 at 10:00AM CST by NWS Chicago IL

* WHAT...Locally slippery travel due to lake effect snow expected. Localized snow totals in excess of 3 inches expected. * WHERE...In Illinois, Eastern Will and Southern Cook Counties. In Indiana, Lake IN County. * WHEN...From midnight tonight to 10 AM CST Friday. * IMPACTS...Plan on locally slippery road conditions including during the Friday morning commute. * ADDITIONAL DETAILS...Impacts from snow during lake effect snow are often highly variable across short distances. Conditions may vary from wet roads to snow-covered roads across just a mile. In addition, snow will struggle to stick within a few miles of the Lake Michigan shoreline.

When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Chicago.

Use the Radar Maps link provided to understand the trajectory of a storm.