00:48 Sioux Falls Tornado Rips Apart Building in Newly Released Footage Newly released footage from inside a health center in Sioux Falls shows the damage done by an EF-2 tornado that struck the city one year ago.

A multi-day severe weather threat continued with damaging storms and flash flooding across multiple states Thursday night.

Flooding prompted the evacuation of residents in DeWitt, Nebraska, Thursday, after heavy rains pummeled the area Wednesday night and early the next morning.

Storms heavily affected other areas, as well. The worst of the storms appeared to have hit southwest of Oklahoma City. Grady County Emergency Management Director Dale Thompson said about 10 homes were destroyed in Amber and 25 were destroyed in Bridge Creek.

Two people have died as a result of the storms, according to Oklahoma City Police. Skylyna Stewart, 43, drowned in her underground storm shelter near SE 164th and Midwest Blvd., according to News 9 Oklahoma. Brandon Henegar, 36, was killed when his car was swept away by flood waters in Valley View, Texas, Thursday night. At least 12 people were injured in Oklahoma as a result of the storms, and as many as five of the injured are in critical condition. One person was injured during storms in Jewell County, Kansas, officials confirmed in a news release.

(MORE: Track Severe Weather As It Pushes Across the Plains )

Here are the latest impacts on a state-by-state basis.

Colorado

The Colorado Springs area was hit by a huge hailstorm that left deep accumulations on roadways and clogged drains Thursday afternoon. As much as 8 inches of hail piled up on Interstate 25, according to the Colorado Springs Gazette, requiring the use of several snow plows to clear a path so stranded cars could move.

(MORE: 10 States Where Hail Damage Is Worst )

A lightning strike briefly knocked out power to just over 1,000 customers for about 90 minutes Thursday afternoon, the report added.

Kansas

One person sustained minor injuries and two homes were damaged or destroyed in Sedgwick County after a tornado hit the area, KAKE-TV reported. A survey crew from the National Weather Service studied the damage and determined the twister reached EF3 strength, packing winds as high as 150 mph.

An additional storm in Sedgwick damaged a feed lot, ethanol plant and at least four homes.

Lincoln County also reported storm damage, including downed trees and power lines and a damaged building, KAKE said.

(PHOTOS: Severe Thunderstorms, Tornadoes Strike the Plains )

Storm chasers captured stunning footage of the first tornado as it was in progress in a farm field in Lincoln County. No people were in the immediate path of the cell.

Ben McMillan, a storm chaser who was streaming the Lincoln County tornado, said he saw debris on the ground and in the air. He couldn't immediately confirm where it came from.

The National Weather Service reported the tornado damaged trees and outbuildings outside of Lincoln. However, the damage was not significant, and there were no injuries, the Lincoln County Sheriff told NBC.

Pictures on social media also showed the storm.

Another tornado was reported Wednesday evening in Ionia, Kansas.

Nebraska

Heavy rains also impacted Haymarket Park, a baseball and softball pavilion frequently used by University of Nebraska sports teams, which flooded Thursday, according to the Journal Star. The Huskers will likely play Purdue in a different location over the weekend.

Residents of DeWitt were evacuated Thursday after heavy rains Wednesday night and early Thursday morning caused flash flooding in the area.

Flooding inundated roads around the Lincoln metro area Wednesday night, KLKN-TV said. Those issues lasted into Thursday morning, as some roads remained completely under water.

Strong thunderstorm winds damaged a home south of Hebron. Several trees were also downed and sent careening through the air, KETV-TV reported. Flooding was also a cause for concern in Hebron Wednesday night.

An EF1 tornado was confirmed by an NWS survey crew near Roseland, located in Adams County.

A feed bin, barn and horse arena were reportedly blown away near the communities of Raymond and Malcolm, as well.

Resident Donna Vieselmeyer told KETV, "I've been watching down south, the tornadoes in Oklahoma, it's terrible. We're just very fortunate God was watching over us."

The Red Cross of Nebraska and Southwest Iowa dispatched emergency teams to Roseland to aid those affected by a tornado that caused minor injuries and damaged 10 to 15 homes. The extent of the damage is unknown at this time.

Oklahoma

A woman trapped under her home for approximately three hours was discovered by an Oklahoma Natural Gas employee Wednesday night, FOX 25 reported. The worker was in disbelief when he heard the cries for help and called Oklahoma City Police and the Oklahoma City Fire Department for help. The woman was sitting up and coherent as she was taken to a local hospital.

Residents are cleaning up after yet another round of tornadoes rushed through the Oklahoma City area Wednesday evening. Meanwhile, the National Weather Service has dispatched crews to survey damage and determine exactly how many tornadoes touched down during this event.

NWS Norman confirmed an EF1 tornado caused some of the damage in Norman Wednesday evening, according to a survey of the damage. Some of the wreckage left behind was due to straight-line winds, not a tornado, NWS also found.

The severe weather and subsequent flooding left several suburbs a mess, leading to multiple school closures in the area Thursday. News9.com reports Tuttle, Bridge Creek and Newcastle schools will be closed as residents recover from the round of reported tornadoes.

A confirmed EF3 tornado hit a mobile home park in Oklahoma City, injuring 12 people, several of whom may be in critical condition, spokeswoman Laura O'Leary of the Emergency Medical Service Authority told The Weather Channel. Some are still missing, and rescuers are conducting a search operation.

"This is a tremendous amount of damage," said Jim Cantore, storm tracker for The Weather Channel, as a news helicopter surveyed the damage to the trailer park from above Thursday morning.

Later in the evening, torrential, persistent rainfall became a life-threatening issue for many Oklahoma City residents. More than 7 inches of rain fell at Will Rogers World Airport, shattering the previous daily record of 2.61 inches. Other parts of the city reported upwards of 8 inches.

Gov. Mary Fallin signed a state of emergency Thursday morning for 12 hard-hit counties after flash flooding and multiple tornadoes swept across the state, leaving widespread damage, according to a separate News9.com report.

Interstates 35 and 240 and 44 were closed along various portions in south and southwestern Oklahoma City due to flooding Wednesday night, according to the Oklahoma Department of Transportation. Severe flooding inundated the municipal court, police department and Main Street in downtown Oklahoma City, as well, KOCO-TV reported.

Tiger Safari zoological park in Tuttle may have been hit Wednesday night by a possible tornado, raising fears in the town that the storm let several exotic animals loose, the Associated Press reported. However, all animals were accounted for by the end of the night.

A tornado touched down in Oklahoma City, flipping vehicles and downing power lines on I-35, News9.com reported. A motel and storage business on the interstate also sustained heavy damage.

(MORE: Flood Threat Expected to Continue Across the Plains )

Two people were injured in Moore, Oklahoma, after a weather-related accident on I-35, NewsOK.com reported. They were taken to the University of Oklahoma Medical Center for treatment.

Another person sustained a minor injury while entering or exiting an underground shelter, O'Leary told NewsOK. O'Leary noted the organization had crews standing by in case of additional injuries.

A water rescue was attempted in Norman, Oklahoma, Wednesday night on I-35, KOCO-TV reported.

The Oklahoma State Emergency Operations Center was activated Wednesday night as severe storms pounded the state and caused widespread destruction.

Nearly 20,000 customers remained without power in the Oklahoma City area at sunrise Thursday morning.

The Red Cross of Oklahoma mobilized volunteers in Oklahoma City to aid those affected by damaging tornadoes.

The organization plans to open a shelter in the Bridge Creek/Blanchard area, as well, KOKH said.

Tornadoes swept through the communities of Bridge Creek and Amber, causing "extensive" damage. Dale Thompson, Grady County Emergency Services director, told the Associated Press early estimates revealed about 10 homes were destroyed in Amber, and another 25 were destroyed or heavily damaged in Bridge Creek. No injuries were reported.

An NWS crew surveyed the damage in Bridge Creek and determined the tornado was an EF3.

The Bridge Creek Fire Department was also reportedly hit by a tornado.

Additional damage was reported near the H.E. Bailey Turnpike and along Oklahoma State Highway 44, KFOR-TV reported. Severe damage was also reported between Bridge Creek and New Castle.

The Norman Hotel sustained heavy damage.

The Norman Regional Healthplex sustained damage during Wednesday's severe storms, as well, KOCO said.

A tornado emergency was issued for the communities of Moore, Bridge Creek and Newcastle, Oklahoma, Wednesday night.

Cars were flipped, houses damaged and electrical service largely interrupted after a tornado hit Verden, Oklahoma, according to local storm reports.

Will Rogers World Airport evacuated passengers, employees and visitors to underground pedestrian tunnels a second time Wednesday night due to safety concerns, NewsOK.com reported. People were evacuated earlier in the day, as well, while severe storms pounded the area. As of 11 p.m. EDT, the airport announced the cancelation of all remaining flights for the night.

University of Oklahoma students took cover after a tornado emergency was issued for the school's campus. Another emergency was issued for Norman.

The H.E. Bailey Turnpike was closed Wednesday as storms impacted the area, according to Oklahoma Turnpikes.

Tornadoes were spotted in Amber and Lahoma, Oklahoma, late Wednesday afternoon. Some damage was reported from the Amber tornado, however, the extent is unknown at this time.

Oklahoma City government offices announced early closures due to impending severe weather.

Two tornadoes were spotted in Caddo County, Oklahoma, Oklahoma's News 9 said. No damage was reported.

Severe storms prompted Oklahoma City Community College to cancel classes and close its campus Wednesday, News 9 reported.

Texas

Brandon Henegar, 36, was killed Thursday when his car was swept away by flood waters in Valley View, Texas, NBC reported. Henegar and his vehicle were found in a creek in a remote area.

Storm chasers were busy tracking supercells over mostly open land Thursday evening as a severe weather event fired up over the Lone Star State for the second consecutive day.

The reported tornadoes were spawned in areas north and northwest of the Dallas-Fort Worth Metroplex, but little damage was reported aside from a few barns, trees and power lines, according to the AP. Wise County sheriff's dispatcher Jeff Doughty did say a reported tornado in New Fairview left one person injured and several mobile homes damaged, the report added.

Early Friday morning, the NWS confirmed a train derailed due to flooding in the Cooke County town of Valley View, according to Fox4News.com. Four crew members sustained non-life-threatening injuries, the report added, during the derailment that occurred near Lake Ray Roberts at around 1 a.m.

Late Thursday night, a gas well at a Denton drill site exploded, causing a massive fire near I-35, according to the Dallas Morning News. The blast was possibly caused by a lightning strike, though officials are still investigating the matter, the report added. WFAA.com said there were no injuries or evacuations ordered, but a few residents did leave their homes as a precautionary measure.

At Dallas-Fort Worth International Airport, passengers in Terminal E complained they were stranded inside the terminal due to flooding late Thursday night, and a flooded roadway also led to at least four vehicles getting stuck, according to NBC DFW. There were no injuries reported from any of the flooding at the airport.

Hail up to the size of baseballs was reported in Texas during the first round of severe storms on Wednesday. Winds up to 80 mph heavily damaged trees and power lines in Woodson. Roofs and porches sustained some damage in the area, as well.

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