Full Notification

* WHAT...Flash flooding caused by excessive rainfall due to repeated rounds of torrential rain-producing thunderstorms is possible.

* WHERE...Cook, DuPage, Eastern Will, Grundy, Kane, Kendall, Will counties in Illinois and Lake county in Indiana.

* WHEN...Through Saturday evening.

* IMPACTS...Creeks and streams may rise out of their banks. In addition, roads and streets may flood, especially in areas where storm drains are clogged with debris. Finally, flooding of basements may occur if thunderstorms train over urban areas.

* ADDITIONAL DETAILS... - Over the next 36 hours, several rounds of torrential rain- producing thunderstorms are possible in the watch area including over areas that experienced several inches of rain in the past few days. The tropical-like airmass will support rain rates in excess of 2 inches per hour in the strongest thunderstorms, leading to a threat for flash flooding. - http://www.weather.gov/safety/flood

* AFFECTED AREAS: KANE ... DUPAGE ... KENDALL ... GRUNDY ... NORTHERN COOK ... CENTRAL COOK ... SOUTHERN COOK ... NORTHERN WILL ... SOUTHERN WILL ... EASTERN WILL ... LAKE

Instructions:

Monitor the latest forecasts and be prepared to take quick action should flooding develop.