View of the Palacio Rizzo during floods in Paysand˙, 380 km northwest of Montevideo, on December 27, 2015 (AFP)

A man observes the water from the roof of his home in a flooded neighborhood in Asuncion, Paraguay, Sunday, Dec. 27, 2015 (AP)

A woman is helped by members of the emergency services, after homes were affected by floodwaters in streets close to The River Foss after it burst it's banks in York, northern England, on December 28, 2015 (AFP)

Traffic backs up along I-30, right near a site of Saturday's tornado in Garland, Texas, Sunday, Dec. 27, 2015. At least (AP)

This still aerial image from video courtesy of NBCDFW.COM shows tornado damaged houses and vehicles in Rowlett, Texas on December 27, 2015

An American flag placed by first responders is seen December 27, 2015 in the aftermath of a (AFP)

A flooded home is pictured in Asuncion, December 27, 2015. More than 100,000 people have had to evacuate from their homes in the bordering areas of Paraguay, (Reuters)

Pam Russell, left, and Linda Hart rescue Pam's cat, Larue, from Russell's house a day after a tornado hit on Delta Drive in Rowlett, Texas, Sunday, Dec. 27, 2015 (AP)

A submerged car is pictured on a residential road next to the River Foss after it burst it's banks in York, northern England, on December 28, 2015 (AFP)

Maria Cristina Olivera, left, and her daughter Catherin carry a table on a flooded street as they leave thier home in San Miguel neighborhood in Asuncion, Paraguay, Sunday, Dec. 27, 2015 (AP)

A man is helped into a dinghy by members of the emergency services, after homes were affected by floodwaters in streets close to The River Foss after it burst it's banks in York, northern England, on December 28, 2015 (AFP)

A man travels on a makeshift raft near flood-affected houses in Asuncion, December 27, 2015. More than 100,000 people (Reuters)

A Christmas wreath hangs on the door of a house on a flooded residential street next to the River Foss, after it burst it's banks in York, northern England, on December 28, 2015 (AFP)