Forecast flooding changed from Minor to Moderate severity and increased in duration for the following rivers in Iowa. Cedar River at Cedar Rapids affecting Linn County. Cedar River near Conesville affecting Muscatine and Louisa Counties. Cedar River at Cedar Bluff affecting Cedar, Muscatine and Johnson Counties. . The Flood Watch is replaced by a River Flood Warning for the following rivers in Iowa. Cedar River at Vinton affecting Benton County. Cedar River AT Palo Blairs Ferry Rd affecting Linn County. * WHAT. Flooding is possible. * WHERE. Cedar River at Cedar Rapids. * WHEN. From Thursday afternoon to Sunday afternoon. * IMPACTS. At 14.2 feet, Water affects the lowest sections of C Street SW near Prairie Creek. * ADDITIONAL DETAILS. - At 11:00 AM CDT Tuesday the stage was 7.5 feet. - Forecast. Flood stage may be reached Thursday afternoon. - Flood stage is 12.0 feet.

* WHAT. Flooding caused by excessive rainfall is possible. * WHERE. Portions of Illinois, including the following areas, Bureau, Hancock, Henderson, Henry IL, McDonough, Mercer, Putnam, Rock Island and Warren, Iowa, including the following areas, Cedar, Des Moines, Henry IA, Iowa, Jefferson, Johnson, Keokuk, Lee, Louisa, Muscatine, Scott, Van Buren and Washington, and northeast Missouri, including the following areas, Clark and Scotland. * WHEN. From 4 PM CDT this afternoon through 7 AM CDT Wednesday morning. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS. - Numerous thunderstorms producing very heavy rainfall are expected to develop ahead of a slow moving cold front. Several inches of rain in a short time is possible.

Heat and humidity will build today across much of eastern Iowa, northwest and western Illinois, and northeast Missouri. Heat index readings will rise to the upper 90s to around 100 degrees through early this evening. If you plan to spend time outdoors through early this evening, be sure to stay hydrated by drinking plenty of water, and take frequent breaks in shaded areas or in an air conditioned building. Also, be sure to look before you lock! Don't leave your pets or kids in parked vehicles.

The National Weather Service in Quad Cities IA IL has issued a Flood Warning for the following rivers in Iowa. Cedar River at Vinton affecting Benton County. Cedar River AT Palo Blairs Ferry Rd affecting Linn County. Additional information is available at www.weather.gov/quadcities. The next statement will be issued by Wednesday morning at 1145 AM CDT. * WHAT. Minor flooding is forecast. * WHERE. Cedar River at Vinton. * WHEN. From late Wednesday night to early Saturday morning. * IMPACTS. At 15.0 feet, Minor Flood Stage. Agricultural and low land flooding is ongoing. Water affects much of 22nd Avenue Road northwest of Vinton. * ADDITIONAL DETAILS. - At 11:00 AM CDT Tuesday the stage was 11.1 feet and rising. - Forecast. The river is expected to rise above flood stage early Thursday morning to a crest of 15.9 feet early Friday morning. It will then fall below flood stage Friday evening. - Flood stage is 15.0 feet.

The Flood Warning is extended for the following rivers in Iowa. Winnebago River at Mason City affecting Floyd, Worth and Cerro Gordo Counties. Shell Rock River at Shell Rock affecting Butler, Black Hawk and Bremer Counties. * WHAT. Minor flooding is occurring and minor flooding is forecast. * WHERE. The Shell Rock River at Shell Rock, or from Flood Creek near Clarksville to the Cedar River. * WHEN. Until Thursday morning. * IMPACTS. At 13.0 feet, Part of S Lake St is closed. * ADDITIONAL DETAILS. - At 9:45 AM CDT Tuesday the stage was 12.8 feet. - Forecast. The river is expected to fall below flood stage tomorrow evening and continue falling and remain below flood stage. - Flood stage is 12.0 feet.

The Flood Warning is extended for the following rivers in Iowa. Cedar River at Waterloo affecting Black Hawk County. Cedar River at Janesville affecting Black Hawk, Butler and Bremer Counties. Cedar River at Cedar Falls affecting Black Hawk County. * WHAT. Moderate flooding is occurring and moderate flooding is forecast. * WHERE. The Cedar River at Cedar Falls, or from the West Fork Cedar River to the Cedar Falls-Waterloo city limits. * WHEN. Until early Saturday morning. * IMPACTS. At 93.8 feet, Water affects Cedar City. the road at 216 E Lake St. and the north edge of the road at 2125 Lone Tree Rd. * ADDITIONAL DETAILS. - At 9:45 AM CDT Tuesday the stage was 92.6 feet. - Forecast. The river is expected to rise to a crest of 93.7 feet early tomorrow afternoon. It will then fall below flood stage early Friday afternoon. - Flood stage is 89.0 feet.