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Home Return to list Flood Watch 0037 Issued by the Chicago Forecast Office
Action: New Issued At: 2026-09-20 10:20:49
701
WGUS63 KLOT 201520
FFALOT
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Chicago IL
1020 AM CDT Sun Sep 20 2026
...The National Weather Service in Chicago has issued a Flood Watch
for the following rivers in Illinois...
Illinois River at La Salle affecting Putnam, La Salle and Bureau
counties.
For the Illinois River (Upper)...including Morris, Ottawa, La
Salle...flooding is possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flood Watch means water levels above flood stage are possible, but
not yet certain, based upon the latest forecasts. Persons along
rivers and streams in the watch area should monitor the latest
forecasts and be prepared to take action should flooding develop.
These forecasts are based on observed precipitation as well as
forecast precipitation 24 hours into the future. Changes to the
rainfall forecast, or any additional rainfall after 24 hours, may
cause changes to these river forecasts.
Additional information is available at www.weather.gov.
The next statement will be issued by late tonight.
&&
ILZ017>019-210930-
/O.NEW.KLOT.FL.A.0037.260921T1500Z-260923T1500Z/
/LSLI2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1020 AM CDT Sun Sep 20 2026
...FLOOD WATCH IN EFFECT FROM MONDAY MORNING TO WEDNESDAY MORNING...
* WHAT...Flooding is possible.
* WHERE...Illinois River from Starved Rock Lock and Dam downstream to
confluence with Big Bureau Creek, including the La Salle gauge.
* WHEN...From Monday morning to Wednesday morning.
* ADDITIONAL DETAILS...
- At 9:45 AM CDT Sunday the stage was 13.4 feet.
- Forecast...Flood stage may be reached Monday afternoon.
- Flood stage is 20.0 feet.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4131 8940 4135 8933 4137 8898 4128 8899
4128 8929
$$
Kluber
Action: Continued Issued At: 2026-09-20 21:21:38
186
WGUS63 KLOT 210221
FFALOT
Flood Watch
National Weather Service Chicago IL
921 PM CDT Sun Sep 20 2026
...The Flood Watch continues for the following rivers in Illinois...
Illinois River at La Salle affecting La Salle, Putnam and Bureau
zones.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flood Watch means water levels above flood stage are possible, but
not yet certain, based upon the latest forecasts. Persons along
rivers and streams in the watch area should monitor the latest
forecasts and be prepared to take action should flooding develop.
These forecasts are based on observed precipitation as well as
forecast precipitation 24 hours into the future. Changes to the
rainfall forecast, or any additional rainfall after 24 hours, may
cause changes to these river forecasts.
Additional information is available at www.weather.gov.
The next statement will be issued by Monday afternoon.
&&
ILZ017>019-212030-
/O.CON.KLOT.FL.A.0037.260921T1500Z-260923T1500Z/
/LSLI2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
921 PM CDT Sun Sep 20 2026
...FLOOD WATCH REMAINS IN EFFECT FROM MONDAY MORNING TO WEDNESDAY
MORNING...
* WHAT...Flooding is possible.
* WHERE...Illinois River from Starved Rock Lock and Dam downstream to
confluence with Big Bureau Creek, including the La Salle gauge.
* WHEN...From Monday morning to Wednesday morning.
* ADDITIONAL DETAILS...
- At 8:45 PM CDT Sunday the stage was 16.0 feet.
- Forecast...Rises on the river are possible the next few days. The
river may reach flood stage.
- Flood stage is 20.0 feet.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4131 8940 4135 8933 4137 8898 4128 8899
4128 8929
$$
Petr
Action: Cancelled Issued At: 2026-09-21 11:06:30
343
WGUS63 KLOT 211605
FFALOT
Flood Watch
National Weather Service Chicago IL
1105 AM CDT Mon Sep 21 2026
...The Flood Watch is cancelled for the following rivers in
Illinois...
Illinois River at La Salle affecting Putnam, La Salle and Bureau
zones.
ILZ017>019-211715-
/O.CAN.KLOT.FL.A.0037.000000T0000Z-260921T1605Z/
/LSLI2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1105 AM CDT Mon Sep 21 2026
...FLOOD WATCH IS CANCELLED...
The Flood Watch is cancelled for
Illinois River from Starved Rock Lock and Dam downstream to
confluence with Big Bureau Creek, including the La Salle gauge.
* ADDITIONAL DETAILS...
- At 10:45 AM CDT Monday the stage was 17.8 feet.
- Forecast...Flood stage is not expected to be reached at this
time.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4131 8940 4135 8933 4137 8898 4128 8899
4128 8929
$$
- Izzi
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