Several strong to severe thunderstorms impacted Ector County during the morning of the 4th. Urban flash flooding quickly developed as heavy rains fell over Odessa. Several city streets were closed due to flowing flood waters, including portions of 42nd, University, and Farm to Market Road 1936. Although most of the heavy rainfall had moved away from the city by 10:00 CST, runoff along asphalt and concrete surfaces posed a continued threat of flash flooding. At 10:15 CST the local broadcast media reported that the Odessa Police Department conducted high water rescues at the intersection of 42nd and Grandview. A second round of severe convection developed over the Davis Mountains and Big Bend of west Texas during the afternoon. This activity produced large hail up to the size of golfballs.