Doing so will increase the strain on some of Tulsa's levees, Bynum said. Arkansas, Oklahoma and Missouri have all activated National Guard units to respond to the storms.
Some of the people treated at the area's Kettering Health Network hospitals were hurt during storm clean-up itself, while others may have waited before seeking treatment from storm injuries, said spokeswoman Elizabeth Long. He encouraged those living near the levees to temporarily relocate.
Jeremy Herrington told Tulsa television station KOTV on Monday that his house outside Sand Springs was flooded. I hear you! We're coming!
A auto and truck sit crushed by a tree after a tornado touched down overnight in the city of Trotwood, near Dayton, on Tuesday.
Oklahoma's rainfall from January 1 through Monday was 50% above normal - making this the fourth wettest year to date on record, according to the Oklahoma Climatological Survey.
Some media outlets reported that rescue workers were going door-to-door in parts of Dayton. The weather service office in Atlanta reported that temperatures peaked at 99 degrees in some parts of the state on Memorial Day.
"We've had injuries ranging from lacerations to bumps and bruises from folks being thrown around in their houses due to the storms", she said.
This aerial photo shows tornado damage at the Westbrooke Village Apartment complex in Trotwood, Ohio, Tuesday, May 28, 2019. One of the most violent tornadoes ever recorded struck Xenia, Ohio, 15 miles (24 kilometers) east of Dayton, on April 3, 1974, killing 32 people and almost wiping the city off the map.
Ohio Gov. Mike DeWine has declared a state of emergency in three Dayton-area counties that were devastated by the tornadoes.
North Texas remained under a tornado watch until the evening, while the National Weather Service issued a flash-flood warning along the Oklahoma-Arkansas line as strong thunderstorms brought a new round of rain to eastern Oklahoma and western Arkansas, where the Arkansas River is expected to crest at historic levels.
This time a twister roared through about 10 minutes from his house, one of at least three powerful storms that caused widespread damage in the Dayton area. He said he'd just walked into a hallway when a front room was blown apart.
"I got a phone call from a neighbor who said, "Hey, there's people walking in your home saying you have really nice stuff, '" Dayton resident Nakeyia Allen tells WLWT".
The man, his daughter and her boyfriend hid in the bathtub as they tried to move out of the way of swinging electrical wires and debris.
More than 60,000 homes and businesses in OH were left without power on Monday morning, according to the PowerOutage.US tracking service, and officials advised people to boil water after water plants and pumps went out of service.