Flood Watch

* WHAT...Flooding and flash flooding caused by excessive rainfall are possible.

* WHERE...Portions of northwest Illinois, including the following counties, Carroll, Jo Daviess and Stephenson and Iowa, including the following counties, Dubuque and Jackson.

* WHEN...From late tonight through Saturday evening.

* IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas.

* ADDITIONAL DETAILS... - Widespread showers and storms are expected to develop late tonight and last into Saturday. These storms will be capable of rainfall rates between 1 to 2 inches per hour. Rainfall totals of 1 to 3 inches are likely in the hardest hit areas through Saturday evening with the potential for localized areas of 3+ inches.