Hazardous Weather Outlook for South Ottawa, Illinois
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
406 AM CDT Mon Apr 29 2024
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-300915-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
406 AM CDT Mon Apr 29 2024 /506 AM EDT Mon Apr 29 2024/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Limited Thunderstorm Risk.
DISCUSSION...
Showers with embedded thunderstorms will continue early this
morning mainly east of Interstate 55 and may produce gusty winds
and small hail prior to daybreak. Additional spotty thunderstorms
may develop this afternoon east of Interstate 57. Severe weather
is not expected.
Locally heavy rainfall may result in ponding in poor drainage
areas this morning.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Tuesday night through Wednesday...
Limited Thunderstorm and Flooding Risk.
Thursday...
Elevated Thunderstorm and Flooding Risk.
Friday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the northeast at 50 mph.
Flood Warning for South Ottawa, Illinois
Flood Statement
National Weather Service Chicago IL
926 PM CDT Sun Apr 28 2024
...The Flood Warning is extended for the following rivers in
Illinois...
Illinois River at La Salle affecting La Salle, Bureau and Putnam
Counties.
For the Illinois River (Upper)...including Morris, Ottawa, La
Salle...Minor flooding is forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flood Warning means water levels above flood stage are imminent or
may already be occurring. Persons along rivers and streams in the
warned area should take immediate precautions to protect life and
property.
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.
ILC011-099-155-292030-
/O.EXT.KLOT.FL.W.0033.240429T0600Z-000000T0000Z/
/LSLI2.1.ER.240429T0600Z.240430T1800Z.240503T0600Z.NO/
926 PM CDT Sun Apr 28 2024
...FLOOD WARNING NOW IN EFFECT FROM LATE TONIGHT UNTIL FURTHER
NOTICE...
* WHAT...Minor flooding is forecast.
* WHERE...Illinois River from Starved Rock Lock and Dam downstream
to confluence with Big Bureau Creek, including the La Salle gauge.
* WHEN...From late tonight until further notice.
* IMPACTS...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 8:45 PM CDT Sunday the stage was 19.6 feet.
- Forecast...The river is expected to rise above flood stage
just after midnight tonight to a crest of 22.3 feet early
Tuesday 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