589
WGUS63 KLOT 271720
FFALOT
URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE CHICAGO IL
1220 PM CDT MON APR 27 2026
...THE FLOOD WATCH IS EXTENDED FOR THE FOLLOWING RIVERS IN
ILLINOIS...
ILLINOIS RIVER AT LA SALLE AFFECTING LA SALLE, BUREAU AND PUTNAM
ZONES.
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 TUESDAY MORNING.
ILZ017>019-281130-
/O.EXT.KLOT.FL.A.0028.260428T1800Z-260503T0000Z/
/LSLI2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1220 PM CDT MON APR 27 2026
...FLOOD WATCH NOW IN EFFECT FROM TUESDAY AFTERNOON TO SATURDAY
EVENING...
* 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 TUESDAY AFTERNOON TO SATURDAY EVENING.
* IMPACTS...AT 20.0 FEET, AGRICULTURAL AREAS IN LA SALLE, SPRING
VALLEY, AND PERU ARE INUNDATED.
AT 22.0 FEET, LOWER PARKING LOT AT STARVED ROCK STATE PARK IS
INUNDATED EAST OF LA SALLE. HIGH WATER LEVELS BEGIN TO IMPACT
SHIPPING INTERESTS ALONG THE RIVER.
* ADDITIONAL DETAILS...
- AT 11:45 AM CDT MONDAY THE STAGE WAS 18.9 FEET.
- FORECAST...FLOOD STAGE MAY BE REACHED BY LATE TOMORROW BASED
UPON FORECASTED RAINFALL TODAY AND TONIGHT.
- FLOOD STAGE IS 20.0 FEET.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
LAT...LON 4131 8940 4135 8933 4137 8898 4128 8899
4128 8929
WSL
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