Videos emerge showing massive tornadoes and severe flooding following deadly Texas and Oklahoma storms

Five have been reported dead and 13 more missing as a result of storms

The floods that ravaged Austin over the weekend (Getty Images)

Videos have emerged from Texas and Oklahoma showing the severe flooding and massive tornadoes that have wreaked havoc across the two states over the weekend and Monday.

In one of the videos, a giant twister can be seen ripping through a Texan suburb as it approaches the city of La Grange, Fayette County.

In another, drone footage captures the level of flooding near the city of Austin after the Colorado River burst its banks following the heavy rainfall.

Three deaths were reported in San Marcos in Texas, including that of a 14-year-old who was found in a storm drain with his dog.

A further 12 people, including children, were reported missing near Texas’ Blanco River after they had travelled there for a family gathering over the weekend.

In some areas across the two states, nearly 10 inches of rain fell in just 24 hours.

He said: "It is absolutely massive - the relentless tsunami-type power of this wave of water," the governor said.

It is expected now that the massive weather system is set to affect Texas and Oklahoma’s surrounding states, and Colorado, Arkansas, Louisiana, Missouri and eastern Kansas have all been put on high alert.