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SERVICE CHANGE NOTICE
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1115 AM CDT SUN MAY 26 2024

To:   Family of Services (FOS) subscribers, NOAA Weather Wire
      Service (NWWS) subscribers, Emergency Managers Weather
      Information Network (EMWIN) subscribers, NOAAPort
      subscribers, National Weather Service (NWS) partners
      and other users, and NWS employees.

From: W. Scott Lincoln
      Senior Service Hydrologist
      NWS Chicago

Subject: Change to flood impact categories on the West Branch DuPage
River in DuPage County, Illinois

Effective July 1, 2024, flood impact categories will change for West
Branch DuPage River at Warrenville (NWS identifier WRNI2). These
changes were coordinated with representatives from the city of
Warrenville, DuPage County Office of Homeland Security and Emergence
Management, and DuPage County Stormwater Management.

Action Stage will remain unchanged at 11.0, minor flood stage will
change from 11.5 feet to 12.5 feet, moderate flood stage will remain
unchanged at 14.5, and major flood stage will remain unchanged at
17.5. River forecasts will continue to be issued when this location
has reached, or is expected to reach, action stage.

Forecast and warning information is available from the
NOAA/NWS Chicago web page at weather.gov/chicago as well as the
National Water Prediction Service (NWPS) web page at water.noaa.gov.

If you have any questions regarding this change, please contact:

W. Scott Lincoln
scott.lincoln@noaa.gov
815-834-0600 x493