<p><strong>A trailer flies through the air as a <a href="http://environment.nationalgeographic.com/environment/natural-disasters/tornado-profile/">tornado</a> sweeps through the area of Dallas-Fort Worth, <a href="http://travel.nationalgeographic.com/travel/united-states/texas-guide/">Texas</a>, on Tuesday in a still image taken from a video. </strong></p><p>The National Weather Service estimates that between 6 and 13 twisters may have touched down in northern Texas yesterday, CNN reported.</p><p>CNN meteorologist Sean Morris estimated that the tornadoes were F1 or F2 on the Fujita scale, which ranks tornadoes based on wind speed and damage potential.</p><p>"This is fairly weak in terms of tornadoes, but we saw the awesome power of the twisters as they lifted the trailers several hundred feet in the air," he said on CNN's website.</p><p>An empty trailer weighs 14,000 pounds (63,500 kilograms), while a full one weighs about 46,000 pounds (208,650 kilograms), according to the news agency.</p><p>Authorities have not yet reported any deaths from the Texas tornadoes, which destroyed at least 150 homes.</p><p>(Also see <a href="http://news.nationalgeographic.com/news/2011/04/pictures/110428-alabama-tornado-pictures-news-tuscaloosa-birmingham-nation/">"Alabama Tornado Pictures: Mile-Wide 'Monster' Slams Towns [2011]."</a>)</p>

Flying Trailer

A trailer flies through the air as a tornado sweeps through the area of Dallas-Fort Worth, Texas, on Tuesday in a still image taken from a video.

The National Weather Service estimates that between 6 and 13 twisters may have touched down in northern Texas yesterday, CNN reported.

CNN meteorologist Sean Morris estimated that the tornadoes were F1 or F2 on the Fujita scale, which ranks tornadoes based on wind speed and damage potential.

"This is fairly weak in terms of tornadoes, but we saw the awesome power of the twisters as they lifted the trailers several hundred feet in the air," he said on CNN's website.

An empty trailer weighs 14,000 pounds (63,500 kilograms), while a full one weighs about 46,000 pounds (208,650 kilograms), according to the news agency.

Authorities have not yet reported any deaths from the Texas tornadoes, which destroyed at least 150 homes.

(Also see "Alabama Tornado Pictures: Mile-Wide 'Monster' Slams Towns [2011].")

Video still from Reuters TV

Pictures: Texas Tornadoes Toss Trailers, Flatten Homes

Yesterday's tornadoes peeled roofs off homes, tossed big-rigs in the air, and left flattened tractor trailers strewn along highways.

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