902 
WGUS53 KLOT 100501
FFWLOT
ILC099-100900-
/O.NEW.KLOT.FF.W.0046.260810T0501Z-260810T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Chicago IL
1201 AM CDT Mon Aug 10 2026

The National Weather Service in Chicago has issued a

* Flash Flood Warning for...
  Northern La Salle County in north central Illinois...

* Until 400 AM CDT.

* At 1201 AM CDT, Doppler radar and automated rain gauges indicated
  slow moving thunderstorms with rain rates of 1 to 2 inches per
  hour. Up to 2.5 inches of rain have fallen so far near Earlville.
  Flash flooding is ongoing or expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar and automated gauges.

  IMPACT...Rapid-onset flooding of creeks, streams, drainage ditches,
           streets, underpasses, low-lying areas, and other poor
           drainage areas.

* Some locations that will experience flash flooding include...
  Ottawa, Mendota, Marseilles, Sheridan, Seneca, Earlville, Serena,
  Naplate, Dayton, Harding, Wedron, Prairie Center, Norway and
  Triumph.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Warning means rapid-onset flooding is imminent or may
already be occurring. Persons along creeks, drainage ditches, and
other waterways should take immediate precautions to protect life and
property.

&&

LAT...LON 4163 8894 4158 8881 4156 8870 4155 8860
      4131 8860 4131 8881 4133 8891 4142 8900
      4152 8906 4163 8917

FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR

$$

WSL

157 
WGUS73 KLOT 100549
FFSLOT

Flash Flood Statement
National Weather Service Chicago IL
1249 AM CDT Mon Aug 10 2026

ILC099-100900-
/O.CON.KLOT.FF.W.0046.000000T0000Z-260810T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
La Salle IL-
1249 AM CDT Mon Aug 10 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 4 AM CDT EARLY THIS
MORNING FOR NORTHEASTERN LA SALLE COUNTY...

At 1249 AM CDT, Doppler radar and automated rain gauges indicated
that heavy rainfall had moved out of the area. Up to 3 inches of
rainfall occurred due to earlier thunderstorms near Earlville and
Ottawa. Some streams will likely continue to rise over the next few
hours, and standing water may be slow to recede in some areas.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar and automated gauges.

IMPACT...Rapid-onset flooding of creeks, streams, drainage ditches,
         streets, underpasses, low-lying areas, and other poor
         drainage areas.

Some locations that will experience flash flooding include...
  Ottawa, Marseilles, Sheridan, Seneca, Earlville, Serena, Dayton,
  Wedron, Harding, Prairie Center, Norway and Triumph.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Warning means rapid-onset flooding is imminent or may
already be occurring. Persons along creeks, drainage ditches, and
other waterways should take immediate precautions to protect life and
property.

&&

LAT...LON 4160 8903 4153 8904 4143 8899 4135 8891
      4131 8881 4131 8860 4147 8860 4152 8865
      4155 8873 4157 8882 4162 8894

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

WSL

056 
WGUS73 KLOT 100721
FFSLOT

Flash Flood Statement
National Weather Service Chicago IL
221 AM CDT Mon Aug 10 2026

ILC099-100731-
/O.CAN.KLOT.FF.W.0046.000000T0000Z-260810T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
La Salle IL-
221 AM CDT Mon Aug 10 2026

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN LA SALLE
COUNTY...
...REPLACED WITH A FLOOD ADVISORY...

Heavy rainfall has ended and no new flooding is expected. Standing
water may be slow to recede and some streams may continue to rise due
to earlier rainfall. See the Flood Advisory product for more
information.

&&

LAT...LON 4160 8903 4153 8904 4143 8899 4135 8891
      4131 8881 4131 8860 4147 8860 4152 8865
      4155 8873 4157 8882 4162 8894

$$

WSL