The state has been pounded by tornadoes, heavy rainfall, thunderstorms and flooding that forced evacuations and rooftop rescues and left thousands of residents without electrical power.
The Weather Service issued severe thunderstorm and flash-flood warnings as well as tornado watches throughout the region.
An unidentified man was found drowned in Texas, while at least two more victims reportedly died in Oklahoma. One woman died after her car hydroplaned and a firefighter was killed when he was swept into a storm drain, CNN reported.
Twelve people were reported missing after hundreds of homes were damaged by flash-flooding in Central Texas on Monday, AP reported.
The region has been badly affected by tornadoes, heavy rains and thunderstorms as of late. People have been evacuated from their homes, sometimes being rescued from their roofs, Reuters reported. Thousands have been left without electricity, and flash flooding has damaged hundreds of houses and washed away bridges.
The area has been suffering from record-setting rains since the beginning of May, and has already received six times more rainfall than typical for an entire month, Accuweather said. More severe thunderstorm and flash-flood warnings, as well as tornado watches, were issued by the Weather Service on Monday, with the governor’s office saying the severe weather could continue through the week.