Illinois - United States   2026-06-20   Saturday   40.20N, -89.70W

Mason City

Illinois - United States
2026-06-20

Flood Watch issued June 20 at 1:45AM CDT until June 22 at 1:00AM CDT by NWS Lincoln IL

Issue date: 2026-06-20T06:45+00:00

* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of central, east central, southeast, and west central Illinois, including the following counties, in central Illinois, Christian, De Witt, Logan, Macon, Mason, Menard, Piatt, Sangamon and Shelby. In east central Illinois, Champaign, Clark, Coles, Cumberland, Douglas, Edgar, Moultrie and Vermilion. In southeast Illinois, Clay, Crawford, Effingham, Jasper, Lawrence and Richland. In west central Illinois, Cass, Fulton, Morgan, Schuyler and Scott. * WHEN...From Sunday morning through late Sunday night. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Rainfall amounts of 1 to 3 inches are expected with locally higher amounts possible. - http://www.weather.gov/safety/flood

Flood Warning issued June 19 at 9:17PM CDT by NWS Lincoln IL

Issue date: 2026-06-20T02:17+00:00

...The Flood Warning continues for the following rivers in Illinois... Illinois River at Henry affecting Marshall and Putnam Counties. Illinois River at Peoria affecting Peoria, Tazewell and Woodford Counties. Illinois River at Beardstown affecting Morgan, Brown, Schuyler and Cass Counties. Illinois River near Havana affecting Fulton, Mason and Cass Counties. .The following forecasts are based on observed precipitation, soil moisture conditions, and forecast precipitation. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Illinois River near Havana. * WHEN...Until further notice. * IMPACTS...At 19.5 feet, Access road to Anderson Lake north campground closed. * ADDITIONAL DETAILS... - At 8:45 PM CDT Friday the stage was 18.1 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:45 PM CDT Friday was 18.1 feet. - Forecast...The river is expected to rise to a crest of 18.5 feet early Sunday afternoon. - Flood stage is 14.0 feet. - http://www.weather.gov/safety/flood