(Reuters) -- One person was killed and about a dozen others injured by tornadoes that touched down near Oklahoma City, part of a storm system that flattened homes and caused flooding in several Great Plains states, officials said on Thursday.
One woman who sought safety in her home's storm shelter died when it flooded in Wednesday night's storms, Oklahoma police said, according to local media reports.
The weather system battered a region from Texas to Nebraska and spawned dozens of reported tornadoes on Wednesday. Storms are expected in the same region on Thursday, raising the possibility of more tornadoes, forecasters said.
Tornado in Oklahoma/Kansas
1 dead, 12 hurt in Oklahoma tornadoes, more storms to come
A large tornado passes just to the west of the city of Halstead, Kan., on Wednesday, May 6, 2015. Several buildings were destroyed and one person was reported injured. (Travis Heying/Wichita Eagle/TNS via Getty Images)
Charmaine Foraker is hugged by her son Harlan, as she and her other son Craig Foracker, second from left, arrive at the scene of the family farmstead near Bentley, Kan., that was destroyed by a tornado on Wednesday, May 6, 2015. The original farmhouse that Charmaine grew up in was destroyed, along with a newer home that Craig and his family lived in. (Travis Heying/Wichita Eagle/TNS via Getty Images)
BAXTER SPRINGS, KANSAS, TORNADO, USA - APRIL 28, 2014: This is DigitalGlobe satellite imagery of the damage patch from the EF2 TORNADO that hit Baxter Springs Kansas on April 27th, 2014. The satellite image captured on April 28th, 2014. (Photo DigitalGlobe via Getty Images)
Video: Tornado near Lincoln, KS taken by @UnruhMatt at ~2:30pm CT May 6, 2015 http://t.co/bZjAE5eSQW #KSwx
Six people from a mobile-home park damaged by a tornado southwest of Oklahoma City were taken to an Integris hospital in the region, including an 80-year-old woman in critical condition with hip injuries, spokeswoman Brooke Cayot said.
Thousands of homes and business in Oklahoma were without power on Thursday morning, the Oklahoma Corporation Commission said.