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Ottawa, IL Severe Weather Alertstar_ratehome

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Current Station
Personal Weather Station
Location: Ottawa, IL
Elevation: 489ft
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Active Weather Alerts

Tornado Watch
Issued: 1:31 AM Jun. 11, 2026 – National Weather Service
TORNADO WATCH 308 REMAINS VALID UNTIL 11 PM CDT THIS EVENING FOR
THE FOLLOWING AREAS

IN ILLINOIS THIS WATCH INCLUDES 3 COUNTIES

IN CENTRAL ILLINOIS

LIVINGSTON

IN NORTH CENTRAL ILLINOIS

LA SALLE

IN NORTHEAST ILLINOIS

GRUNDY

THIS INCLUDES THE CITIES OF COAL CITY, DWIGHT, FAIRBURY,
LA SALLE, MARSEILLES, MENDOTA, MINOOKA, MORRIS, OTTAWA, PONTIAC,
AND STREATOR.

Flood Advisory
Issued: 1:03 AM Jun. 11, 2026 – National Weather Service
...FLOOD ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING...

* WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...A portion of north central Illinois, including the
following county, La Salle.

* WHEN...Until 1100 PM CDT.

* IMPACTS...Creeks and streams may rise out of their banks. Roads
and streets may be flooded.

* ADDITIONAL DETAILS...
- At 802 PM CDT, Doppler radar indicated heavy rain due to
thunderstorms producing rainfall rates of 1 to 2 inches per
hour.
- Some locations that will experience flooding include...
Ottawa, Streator, Peru, La Salle, Marseilles, Oglesby,
Seneca, North Utica, Tonica, Grand Ridge, Naplate, Dayton,
Lostant, Ransom, Rutland, Cedar Point, Kangley, Dana, Leonore
and Wedron.
- http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Advisory means minor flooding along waterways and other poor
drainage areas is imminent or may already be occurring. Persons in
the advisory area should use caution and avoid flood waters.

&&



Flood Watch
Issued: 11:54 PM Jun. 10, 2026 – National Weather Service
...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT /5 AM EDT/ THURSDAY...

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Portions of Illinois, including the following areas,
Central Cook, De Kalb, DuPage, Eastern Will, Ford, Grundy,
Iroquois, Kane, Kankakee, Kendall, La Salle, Lee, Livingston,
Northern Cook, Northern Will, Southern Cook and Southern Will and
northwest Indiana, including the following areas, Benton, Jasper,
Lake IN, Newton and Porter.

* WHEN...Until 4 AM CDT /5 AM EDT/ Thursday.

* IMPACTS...Creeks and streams may rise out of their banks. Flooding
may occur in poor drainage and urban areas. Underpasses may be
flooded. Roads and streets may be flooded.

* ADDITIONAL DETAILS...
- A line of thunderstorms with rainfall rates locally in excess
of 1 to 2 inches per hour may move across portions of
northern and northeastern Illinois late this evening.
Rainfall may lead to flooding, especially in urban areas and
areas that received heavy rainfall earlier this afternoon.
- http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Watch for flash flooding means rapid-onset flooding is
possible, but not yet certain, based upon the latest forecasts.
Flash flooding is a dangerous situation. Persons with interests
along area rivers, creeks, and other waterways should monitor the
latest forecasts and be prepared to take action should flooding
develop.

&&

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