Flood Watch

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Portions of Illinois, including the following areas, Adams IL, Brown IL, Calhoun IL and Pike IL and Missouri, including the following areas, Audrain MO, Boone MO, Callaway MO, Cole MO, Crawford MO, Franklin MO, Gasconade MO, Jefferson MO, Knox MO, Lewis MO, Lincoln MO, Marion MO, Moniteau MO, Monroe MO, Montgomery MO, Osage MO, Pike MO, Ralls MO, Saint Charles MO, Saint Louis City MO, Saint Louis MO, Shelby MO, Warren MO and Washington MO.

* WHEN...From this evening through Thursday morning.

* IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS... - Training thunderstorms with high rainfall rates are expected within the watch area late this evening into Thursday morning.