In order to provide additional flood forecast and warning services on portions of the Fox and Illinois rivers in northern Illinois, the NWS Chicago office will provide river forecasts and river flood warnings for the Fox River at Montgomery Illinois and the Illinois River at Ottawa IL beginning at 1400 coordinated universal time(UTC)/8 am CST on March 5 2009. River forecasts will be issued when water levels are expected to reach or exceed action stage. Flood warnings will be issued when water levels are expected to reach or exceed the flood stages of 13 feet on the Fox River at Montgomery and 463 feet on the Illinois River at Ottawa IL. Assigned flood stages are provisional, and may be modified in the future based on additional or updated impact information.
River forecast and flood warning information will be made available on the NWS Chicago Advanced Hydrologic Prediction Service (AHPS) page available from Weather.gov/chicago. River flood information will also be broadcast on the NOAA/NWS all hazards weather radio.
The National Weather Service welcomes public feedback. If you have any questions or comments on this change, please contact:
National Weather Service Chicago Forecast Office
333 W University Drive
Romeoville IL 60446
Phone: (815) 834-0600 x493