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Flash Flooding Likely into Tonight for Portions of Kansas and Missouri; Heat Wave Expands to the East Coast; Tropical Storm Krosa Forms Near the Marianas.

Flash flooding likely in northeast Kansas & Missouri into tonight. Widespread extreme heat will develop and persist across much of the Southeast this weekend & next week. Tropical Storm Krosa has formed and will continue to cause heavy rain across Guam & the CNMI through Saturday. Severe storms with flooding rains expected into tonight for portions of the Midwest. Read More >



This page houses climatological snowfall data for the NWS Chicago County Warning Area (CWA), a 23 county area that includes a large portion of northern Illinois and northwest Indiana.  Much of the information is for two official climate sites, Chicago and Rockford, as these locations have longtime, quality-controlled climate data.

Besides climatology, this page can serve to help with snowfall risk assessment in terms of time of year, frequency, and magnitude. For more on specific snow events of the past, please visit our Past Events Page WPC Storm Summaries, and the NCEI Storm Events Database.
Snow
Courtesy of Laurie Stahl in Antioch, IL