Station Name: Seneca
Data Source: USGS

Elevation Above Sea Level: 499 feet

Nearest Address:
Harbor Lane
Seneca, IL 61360
La Salle County

GPS Coordinates: 41.2997, -88.6142

Nearby Water Temperatures

Wind Advisory issued April 2 at 10:36AM CDT until April 2 at 7:00PM CDT by NWS Chicago IL

Effective: Thu April 2, 2026, 10:36 AM
Expires: Thu April 2, 2026, 7:00 PM

* WHAT...South winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Portions of north central and northeast Illinois. * WHEN...Until 7 PM CDT this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

Tornado Watch issued April 2 at 6:52PM CDT until April 2 at 11:00PM CDT by NWS Chicago IL

Effective: Thu April 2, 2026, 6:52 PM
Expires: Thu April 2, 2026, 11:00 PM

TORNADO WATCH 89, PREVIOUSLY IN EFFECT UNTIL 8 PM CDT THIS EVENING, IS NOW IN EFFECT UNTIL 11 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 10 COUNTIES IN NORTH CENTRAL ILLINOIS BOONE DE KALB LA SALLE LEE OGLE WINNEBAGO IN NORTHEAST ILLINOIS GRUNDY KANE KENDALL MCHENRY THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE, BYRON, COAL CITY, CRYSTAL LAKE, DEKALB, DIXON, ELGIN, LA SALLE, MARSEILLES, MCHENRY, MENDOTA, MINOOKA, MORRIS, OREGON, OSWEGO, OTTAWA, PLANO, ROCHELLE, ROCKFORD, STREATOR, SYCAMORE, WOODSTOCK, AND YORKVILLE.

Flood Watch issued April 2 at 4:36AM CDT until April 5 at 5:00PM CDT by NWS Chicago IL

Effective: Thu April 2, 2026, 4:36 AM
Expires: Thu April 2, 2026, 10:45 PM

...The National Weather Service in Chicago IL has issued a Flood Watch 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. * 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 late Friday night to Sunday afternoon. * IMPACTS...At 20.0 feet, Agricultural areas in La Salle, Spring Valley, and Peru are inundated. * ADDITIONAL DETAILS... - At 3:45 AM CDT Thursday the stage was 14.3 feet. - Forecast...Flood stage may be reached early Saturday morning. - Flood stage is 20.0 feet. - http://www.weather.gov/safety/flood

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 this evening.

Flood Watch issued April 2 at 11:06AM CDT until April 6 at 10:00PM CDT by NWS Chicago IL

Effective: Thu April 2, 2026, 11:06 AM
Expires: Fri April 3, 2026, 5:15 AM

...The Flood Watch is extended for the following rivers in Illinois... Illinois River at La Salle affecting Putnam, La Salle and Bureau zones. For the Illinois River (Upper)...including La Salle...flooding is possible. * 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 Friday afternoon to late Monday evening. * 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 10:45 AM CDT Thursday the stage was 15.0 feet. - Forecast...Flood stage may be reached tomorrow afternoon. - Flood stage is 20.0 feet. - http://www.weather.gov/safety/flood

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 late tonight.

Flood Watch issued April 2 at 9:59AM CDT until April 5 at 7:00AM CDT by NWS Chicago IL

Effective: Thu April 2, 2026, 9:59 AM
Expires: Fri April 3, 2026, 4:00 AM

...The National Weather Service in Chicago IL has issued a Flood Watch for the following rivers in Illinois... Des Plaines River near Des Plaines affecting Central Cook and Northern Cook zones. Fox River at Dayton affecting La Salle zone. * WHAT...Flooding is possible. * WHERE...Fox River from Millington downstream to confluence with the Illinois River, including the Dayton gauge. * WHEN...From Friday morning to Sunday morning. * IMPACTS...At 13.0 feet, Residential structures threatened along 2062nd Road in Wedron. Water overflows low-lying banks in Dayton and Ottawa. * ADDITIONAL DETAILS... - At 9:45 AM CDT Thursday the stage was 8.1 feet. - Forecast...Flood stage may be reached late tomorrow morning or afternoon. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood

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 late tonight.