A tornado that tore through Wynnewood, Oklahoma, left one man dead and killed some livestock, while another touched down near Connerville also killed a man, officials said.
The victim was a 76-year-old man who lived by himself in a trailer when the tornado struck, according to Garvin County Sheriff Larry Rhodes.
A dozen homes were severely damaged or destroyed, said Rhodes. He adding that the damage was "extensive" given how rural the area is.
Rhodes said there were no other injuries or fatalities reported in Wynnewood.
However, after hitting Wynnewood, the tornado moved east across I-35 toward Joy, Oklahoma. Forecasters issued a "tornado emergency" for communities in that area, noting the storm could be particularly violent.
The Johnston County Sheriff's Department said a man was killed by a tornado that hit the Connerville-Bromide area, and it was investigating reports of other injuries and damage.
Dramatic footage shows massive tornado on the ground in Garvin County, Oklahoma; NWS urges residents to seek shelterhttps://t.co/47kf2p6Mlg— ABC News (@ABC) May 9, 2016
And the threat is not over. The National Weather Service issued a tornado emergency for the Hickory and Roff, Oklahoma, areas, where a large and dangerous tornado was approaching.
A tornado watch had been issued earlier in the afternoon for parts of Oklahoma, Arkansas and northeastern Texas. The watch is in effect until 9 p.m. CT.
A severe thunderstorm watch was issued for parts of Oklahoma and Kansas, also in effect until 9 p.m. CT.
ABC News' Daniel Peck and The Associated Press contributed to this report.