Active Weather Alerts
Flood Warning
Issued: 7:32 AM Aug. 10, 2026 – National Weather Service
...FLOOD WARNING IN EFFECT UNTIL 7 AM CDT THIS MORNING... * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Northeastern Livingston County in central Illinois... East Central La Salle County in north central Illinois... Southern Grundy County in northeastern Illinois... * WHEN...Until 700 AM CDT. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Slow moving or standing water may continue. High water likely may recede slowly from flooded areas. * ADDITIONAL DETAILS... - At 228 AM CDT, Doppler radar indicated that heavy rainfall had moved out of the area. Rainfall amounts of 2 to 3 inches occurred across the area, with rainfall in excess of 4 inches observed near Dwight. Water will be slow to recede from fields, yards, and poor drainage areas. Some streams may continue to rise due to earlier rainfall as runoff moves downstream. - Some locations that will experience flooding include... Ottawa, Streator, Dwight, Gardner, Mazon, Grand Ridge, South Wilmington, Ransom, Verona, Campus, East Brooklyn and Kinsman. - This includes the headwaters of the Mazon River, Otter Creek, and Covel Creek. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Warning means flooding is imminent or may already be occurring. Persons along rivers, creeks, and other waterways should take immediate precautions to protect life and property. Be especially cautious at night when it is harder to recognize the dangers of flooding. &&
Flood Advisory
Issued: 6:05 AM Aug. 10, 2026 – National Weather Service
...FLOOD ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...La Salle County in north central Illinois... Lee County in north central Illinois... Grundy County in northeastern Illinois... Southwestern Kendall County in northeastern Illinois... * WHEN...Until 900 AM CDT Monday. * IMPACTS...Creeks and streams may rise out of their banks. Roads and streets may be flooded. Slow moving or standing water may continue. High water may recede slowly from flooded areas. * ADDITIONAL DETAILS... - At 104 AM CDT, Doppler radar and automated rain gauges indicated heavy rainfall moving out of the area, but some streams will continue to rise due to earlier heavy rainfall. Standing water may also be slow to recede in some areas. Up to 3 inches of rain occurred in multiple locations, including east of Amboy, near Earlville, north of Ottawa, and east of Streator. - Some locations that will experience flooding include... Ottawa, Dixon, Streator, Morris, La Salle, Mendota, Coal City, Marseilles, Amboy, Sheridan, Oglesby, Seneca, Earlville, Gardner, North Utica, Serena, Franklin Grove, Mazon and Paw Paw. - 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. Be especially cautious at night when it is harder to recognize the dangers of flooding. &&
Flood Watch
Issued: 2:02 AM Aug. 10, 2026 – National Weather Service
...FLOOD WATCH IN EFFECT UNTIL 7 AM CDT /8 AM EDT/ MONDAY... * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of Illinois, including the following counties, Boone, Ford, Iroquois, La Salle, Lee, Livingston, Ogle and Winnebago and northwest Indiana, including the following county, Benton. * WHEN...Until 7 AM CDT /8 AM EDT/ Monday. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Roads and streets may be flooded. * ADDITIONAL DETAILS... - Showers and thunderstorms are developing along a stalled surface front. Atmospheric conditions are favorable for heavy rainfall with localized rainfall rates exceeding 2 inches per hour late this evening through the overnight. Slow storm motion and the potential for multiple rounds of rainfall will increase the threat for flooding in some areas. - 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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