3:05
More than 40 homes in La Porte, a small city nearby, flooded after taking on more than a half foot of water. Some roads in the area were completely undriveable due to the high water levels.
A lightning strike caused an explosion and fire at a shale oil tank facility in Karnes County, near San Antonio, said the sheriff's office. No injuries were reported.
The heavy rain ended across the Houston area Saturday morning, but another round of thunderstorms, including some severe storms, threatened Texas and much of the Plains once again on Saturday evening.
![\"PHOTO:](\"http://a.abcnews.com/images/US/ABC_weather_threat_jtm_150418_4x3t_384.jpg\")
As of 7 p.m. Saturday, there were more than three dozen reports of severe weather from Texas up to Nebraska and northeastern Colorado. The majority of the reports were of large hail, however tornadoes were also reported in Colorado and Texas.
Heading into Sunday, the threat for severe weather will push farther east affecting more than 50 million Americans from eastern Texas to the Carolinas. The main threat from any severe storms that develop will be large hail and damaging wind gusts, and flash flooding. However, an isolated tornado is possible as well.
![\"PHOTO:](\"http://a.abcnews.com/images/US/ABC_weather_threat_sunday_jtm_150418_4x3t_384.jpg\")
Some good news for Houston and the western Gulf Coast region is that the heaviest of the rain has now pushed east, with New Orleans to the Florida Panhandle in for round of heavy rain through the remainder of the weekend.
![\"PHOTO:](\"http://a.abcnews.com/images/US/ABC_weather_map_rain_jtm_150418_4x3t_384.jpg\")
The unsettled weather, including some heavy downpours will begin to push north on Sunday bring rain to Chicago ad the Ohio Valley. By Monday morning, heavy rain will have an impact on the morning commute form Washington D.C. to New York.
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