The combination of very warm temperatures along with increasing relative humidity today will result in uncomfortably hot temperatures across the region. Heat index values are expected to range between 100 and 105 degrees this afternoon into the early evening hours. If working outside today, be sure to drink plenty of water, wear loose-fitting and light-colored clothing, and take frequent breaks in air-conditioned locations. Be sure to check on those most vulnerable to heat, including children and the elderly, provide shade and fresh water for outdoor pets and livestock, and check the backseat of your vehicle when transporting children.

The Flood Warning continues for the following river in Missouri. Illinois. Mississippi River at Louisiana. Mississippi River at Clarksville. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT. Minor flooding is occurring and minor flooding is forecast. * WHERE. Mississippi River at Clarksville. * WHEN. Until further notice. * ADDITIONAL DETAILS. - At 10:00 AM CDT Saturday the stage was 25.4 feet. - Recent Activity. The maximum river stage in the 24 hours ending at 10:00 AM CDT Saturday was 25.5 feet. - Forecast. The river is expected to rise to a crest of 25.4 feet this afternoon. - Flood stage is 25.0 feet.

The Flood Warning continues for the following rivers in Illinois. Missouri. Mississippi River at Clarksville. Mississippi River at Louisiana. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT. Minor flooding is occurring and minor flooding is forecast. * WHERE. Mississippi River at Clarksville. * WHEN. Until early Friday afternoon. * IMPACTS. At 25.3 feet, The road to Port Marmac, a riverside community of about 15 homes just south of Clarksville, begins flooding. * ADDITIONAL DETAILS. - At 9:30 PM CDT Saturday the stage was 25.3 feet. - Recent Activity. The river rose above flood stage on May 26 and crested near 27.8 feet on June 3. - Forecast. The river is expected to fall near flood stage Thursday morning and continue falling slowly. - Flood stage is 25.0 feet.