let's get to meteorologist derek van dam. >> the severe weather threat is moving eastward today. not as expansive as yesterday. nonetheless, louisiana and mississippi and central and western tennessee. that is where we have the potential for damaging winds and isolated tornadoes. look out nashville and memphis and tupelo and jackson as well. you can see the cold front advancing eastward from texas all the way to the ohio river valley. a significant amount of rain that has fallen over the region on top of a saturated environment. that is why the national weather service has issued a flood watch from san antonio to austin. be careful and on the lookout for flooded roadways. a temperature swing across the state of texas. nearly 35 degree temperature swing from amarillo to the houston region. significant cold front pressing eastward cooling temperatures across the great lakes as well