* WHAT. Heat index values up to 110 expected. * WHERE. Portions of south central and southeast Texas. * WHEN. From noon today to 7 PM CDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 110 expected. * WHERE. Portions of central, south central, southwest, and west central Louisiana and southeast Texas. * WHEN. From 11 AM to 7 PM CDT Thursday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

The Flood Warning is extended for the following rivers in Texas. Louisiana. Sabine River Near Deweyville Additional information is available at www.weather.gov. The next statement will be issued Thursday morning at 1115 AM CDT. * WHAT. Minor flooding is occurring and minor flooding is forecast. * WHERE. Sabine River near Deweyville. * WHEN. Until early Sunday afternoon. * IMPACTS. At 25.0 feet, Lowest roads beside the river flood around Deweyville and subject to being closed. In addition, low-lying roads in Southwest Beauregard Parish are flooded including Robert Clark Road. Flooding occurs on the south side of Niblett Bluff Park with access roads to camp houses cut off around the park. Access roads to the river in Northeastern Orange County become flooded. * ADDITIONAL DETAILS. - At 10:45 AM CDT Wednesday the stage was 24.7 feet. - Recent Activity. The maximum river stage in the 24 hours ending at 10:45 AM CDT Wednesday was 24.7 feet. - Forecast. The river is expected to fall below flood stage early Sunday morning and continue falling to 23.8 feet Monday morning. - Flood stage is 24.0 feet. - http://www.weather.gov/safety/flood

The Flood Warning is extended for the following rivers in Texas. Louisiana. Sabine River Near Deweyville Additional information is available at www.weather.gov. The next statement will be issued Thursday evening at 800 PM CDT. * WHAT. Minor flooding is occurring and minor flooding is forecast. * WHERE. Sabine River near Deweyville. * WHEN. Until further notice. * IMPACTS. At 24.0 feet, Minor lowland flooding will occur. * ADDITIONAL DETAILS. - At 6:46 PM CDT Wednesday the stage was 24.7 feet. - Recent Activity. The maximum river stage in the 24 hours ending at 6:46 PM CDT Wednesday was 24.8 feet. - Forecast. The river is expected to remain steady above flood stage at 24.7 feet. - Flood stage is 24.0 feet. - http://www.weather.gov/safety/flood