NEW : Damaging winds bring tornado warnings across eastern Plains . Severe weather system to start in Plains , expected to move east . Little Rock , Arkansas , has a 60 % to 70 % chance of severe thunderstorms Friday evening . North Carolina also may see 25-mph winds .
NEW : Damaging winds bring tornado warnings across eastern North Carolina . Severe weather system to start in Plains , expected to move east . Little Rock , Arkansas , has a 70 % chance of severe thunderstorms Sunday night . Nashville also may see 25-mph winds .