Remnants of Hurricane Patricia wrecks havoc in southern U.S.

Remnants of Hurricane Patricia, the strongest hurricane on record to hit the Western Hemisphere, moved up from Mexico to the Gulf Coast and Central Texas in southern United States, and still caused significant damages there on Saturday.

The Gulf Coast cities of Galveston and Houston remained on alert on Friday, as a more intensive rainfall rising from two inches on land up to 12 inches off shore was predicted through Monday morning, according to a National Weather Service meteorologist.

On Saturday morning, tracks of a Union Pacific freight train was hit by floods in the south of Taxas' northeastern city of Dallas, causing the derailment of the train, according to a spokesman for the railroad company.

Meanwhile, in Texas' Pearland, south of Houston, several residents witnessed a possible tornado -- a funnel cloud that touched down and damaged a building located at the intersection of two major highways.

On Saturday afternoon, Houston Mayor Annise Parker called for patience as low-lying streets throughout the Houston area continued to be flooded. "Spend some time wherever you are if that area is experiencing particularly heavy rainfall," Parker was quoted as saying by local media reports.

On the same day, the coastal city of Galveston issued a voluntary evacuation as nearly 4,000 residents of the city's northeast peninsula were cautioned by the predicted 12-inch rainfall and 5-foot (1.52-meter) tides. Endi