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Flood Watch — Buchanan, IA, Delaware, IA, Dubuque, IA, Benton, IA, Linn, IA, Jones, IA, Jackson, IA, Iowa, IA, Johnson, IA, Cedar, IA, Clinton, IA, Muscatine, IA, Scott, IA, Keokuk, IA, Washington, IA, Louisa, IA, Jo Daviess, IL, Stephenson, IL, Carroll, IL, Whiteside, IL, Rock Island, IL, Henry, IL, Bureau, IL, ILZ018, Mercer, IL
Issued
Expires
1:00 PM CDT · Sun, Sep 20 2026
Issuing Office
NWS KDVN

Affected Areas

Buchanan, IA Delaware, IA Dubuque, IA Benton, IA Linn, IA Jones, IA Jackson, IA Iowa, IA Johnson, IA Cedar, IA Clinton, IA Muscatine, IA Scott, IA Keokuk, IA Washington, IA Louisa, IA Jo Daviess, IL Stephenson, IL Carroll, IL Whiteside, IL Rock Island, IL Henry, IL Bureau, IL ILZ018 Mercer, IL

Official Bulletin

606
WGUS63 KDVN 200100
FFADVN

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Quad Cities IA IL
800 PM CDT Sat Sep 19 2026

IAZ076-ILZ016>018-201200-
/O.EXA.KDVN.FA.A.0011.000000T0000Z-260920T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Keokuk-Henry IL-Bureau-Putnam-
Including the cities of Sigourney, Hennepin, Geneseo, and Princeton
800 PM CDT Sat Sep 19 2026

...FLOOD WATCH IN EFFECT UNTIL 7 AM CDT SUNDAY...

* WHAT...Flooding caused by excessive rainfall continues to be
  possible.

* WHERE...Portions of Illinois, including the following areas,
  Bureau, Henry IL and Putnam and southeast Iowa, including the
  following area, Keokuk.

* WHEN...Until 7 AM CDT Sunday.

* 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.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be alert for possible Flash
Flood Warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.

&&

$$

IAZ040>042-051>054-063>068-077-078-ILZ001-002-007-009-015-024-201200-
/O.CON.KDVN.FA.A.0011.000000T0000Z-260920T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Washington-Louisa-Jo Daviess-
Stephenson-Carroll-Whiteside-Rock Island-Mercer-
Including the cities of Independence, Mount Carroll, Davenport,
Galena, Maquoketa, Cedar Rapids, Dubuque, Vinton, Muscatine, Tipton,
Washington, Sterling, Rock Island, Marengo, Moline, Bettendorf,
Clinton, Freeport, Wapello, Manchester, Iowa City, Anamosa, and Aledo
800 PM CDT Sat Sep 19 2026

...FLOOD WATCH REMAINS IN EFFECT UNTIL 7 AM CDT SUNDAY...

* WHAT...Flooding caused by excessive rainfall continues to be
  possible.

* WHERE...Portions of northwest Illinois, including the following
  counties, Carroll, Jo Daviess, Mercer, Rock Island, Stephenson and
  Whiteside and Iowa, including the following counties, Benton,
  Buchanan, Cedar, Clinton, Delaware, Dubuque, Iowa, Jackson,
  Johnson, Jones, Linn, Louisa, Muscatine, Scott and Washington.

* WHEN...Until 7 AM CDT Sunday.

* 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 again this
    evening and last into Sunday. 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 tonight, with
    the potential for localized areas of 3+ inches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be alert for possible Flash
Flood Warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.

&&

$$

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