Full Notification

* WHAT...Dangerous to impossible travel conditions due to intense lake effect snow expected. Snow rates in excess of 3 inches per hour, localized total snow accumulations of 12 to 18 inches, and northerly wind gusts in excess of 30 mph are expected.

* WHERE...Central Cook, Eastern Will, Northern Cook, and Southern Cook Counties.

* WHEN...From 9 PM this evening to noon CST Monday.

* IMPACTS...Snow rates in excess of 3 inches per hour will cripple travel, including during the Monday morning commute. Strong northerly wind gusts in excess of 30 mph will lead to greatly reduced visibility, especially near the Lake Michigan shoreline. Periods of thundersnow will occur, as well.

* ADDITIONAL DETAILS...Lake effect snow is often very localized, with conditions varying from safe to dangerous across just a few miles. Snow totals in the Winter Storm Warning area may vary considerably from one location to the next.

* AFFECTED AREAS: NORTHERN COOK ... CENTRAL COOK ... SOUTHERN COOK ... EASTERN WILL

Instructions:

Persons should consider delaying all travel while and where the lake effect snow is ongoing.