Severe storms overnight in Nebraska, Texas and Ohio damaged homes and tossed rail cars as well as at least one tractor-trailer, and the threat continued Monday with a large part of the central U.S. on alert.
The greatest damage overnight was just outside North Platte, Neb., where two confirmed tornadoes tore roofs off several homes, downed power lines and injured two people.
One twister crossed Interstate 80, flipping a tractor-trailer in its path. The truck's driver was hospitalized.
A rail yard also was hit, with 15 cars derailed or knocked over, the North Platte Telegraph reported. One worker there was hit by flying debris, treated at a hospital and then released.
In central Ohio, tornado sirens went off as large hail and high winds swept through Sunday night. In Gardendale, Texas, two people were hurt when high winds flipped over their mobile home. No tornadoes were reported in either state.

The mix of warm weather in recent weeks with cold pockets across the Midwest and central U.S. has led to an early start to the tornado season.
"It has been an active season already for tornadoes, and that's part of the reason we've scooched up our siren testing starting in March," Paul Johnson, emergency manager for Douglas County in North Dakota, told KETV.
Tornadoes were only part of the recent national weather scene: so too is record warmth and Southwest snow. TODAY's Al Roker reports.
Tornado watches have been issued for parts of Texas and Oklahoma for Monday, while the rest of the central U.S. is under severe weather warnings that include the possibility of large hail and high winds.
The threat will shift slightly to the east on Tuesday, weather.com reported, with parts of Illinois, Arkansas, Louisiana and Texas seeing the biggest threat.
Chicago saw several days of record-breaking 80 degree weather, and in Atlanta, Ga., pollen counts are setting records as well. But in Flagstaff, Ariz., the city is digging out of its second largest snowstorm. Weather Channel meteorologist Mike Seidel reports.
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more red state drama...god must not like the false prophets (republicans) in those states...lmao
More liberal thunderstorms predicted here in Nebraska for today. None have yet hit the Unicameral in Lincoln. Hope a Kansas house lands on top of you, Rick.
Rick:
Karma is a bitch!! I wish for you what you wish for them, as*ho**!
Santorum will attribute this disaster to too much sex. Bachman still thinks 999 is the answer to her 666 prayers. Cain has decided to do a talk show with Palin and Tina Fey. Romney lost for words and just plain nervous. Newt thinking now about 1.50 gas! Face it the Republicans do not have an answer for jobs or the Afganistan war. McCain wants the Afgan war to go another ten years!
I just say I hope the people hit with this weather are OK and able to get the help they need!
What doe's this story have to do about politics. Grow up.
Ju'st a tip here, M's. Jone's, but it's not nece's'sary to u'se an apo'strophe before every "s".
*does
Hahaha.
I know this seems morbid and callous, but I'm looking forward to the next fantastic tornado footage to come out of the midwest and South. Only a matter of time before the next big outbreak happens. Some of the best tornado footage ever shot was captured last season.
And before anyone wishes ill on me for wanting to see more tornadoes, I did have one come through very close to me last year, so yes, I understand how destructive and terrifying they are. They're still fascinating to watch, though.
Horrifying for those that have to experience them though. Stay safe, everyone.
Not too morbid. Tornadoes are pretty awesome to watch. But, they're much better when they're in a field out in the middle of nowhere where they can't do too much damage to life and property. They stop being fun when they hit a town.
It is glad that there is no death. Pray that they are alert and take shelter immediately when storm is coming. Pray that they are all safe and sound as Pedestrian-in-SF said on the above post.
All I can say is I pray for safety for all,sincerely.We had extensive damage in North Carolina last year,Praise God we had no physical injury even though property damage was very bad.Please be as safe as you can everyone.Heed warnings.The best to you all.
The problem here is the inability to grasp the real cost of things. In tornado alley, ALL houses should be constructed as "earth sheltered" homes. Trailers and other flimsy dwellings should be banned by beefing up the housing codes so that they reflect living conditions in this mostly uninhabitable zone. I wouldn't even consider living in tornado alley in an above-ground structure. I wouldn't consider living in an earthquake-prone region in a dwelling constructed of unreinforced brick, either. I wouldn't consider living on the hurricane coast at all, though I might consider a visit.
The only thing I can say is pray harder and talk to God. Who said we is going to live forever? I pray everbody is alright but this is signs from God and hope everbody pay attention before it's too late. I am working on myself too.