New York Tornado: Caught on Video

Severe storms, lightning strike from Midwest to East Coast.
2:56 | 07/27/12

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Transcript for New York Tornado: Caught on Video
As we come to air, 12 states are bracing for yet another night of powerful storms, lightning hail, and high winds. This after last night's destruction. These snapshots you see, tell the tale, an almost impossibly large storm cloud, consumes the horizon. America virtually under siege by mother nature. Abc's meteorologist ginger zee tracking it for us. What's next? I just got back from an area that was hardest hit, elmira, new york. They had a tornado, one of three, more than 400 severe weather reports in all. Reporter: Spectacular storms -- almost 400,000 lightning strikes from missouri to connecticut. I heard a crack and I'm, like, it was a telephone pole, and wires were still live. Reporter: With the lightning, came heavy rain. Winds up to 75 miles per hour. The sky was pitch black, watching the trees fall. It was chaos. Reporter: And three ef-1 tornadoes packing winds up to 110 miles per hour. One was in montrose, pennsylvania, the other two north in new york state. Carol martin and her family were home when a twister hit elmira, new york. The tree comes smshing right through the house. Reporter: Have you ever seen anything like this? Never in my 51 years. I've never seen anything like Reporter: The line of extreme weather marching east was more than 1,300 miles long. And within it, serial derechos. Storm clusters shaped like a backward "c." They are powerful, long-lasting, lines of thunderstorms that produce very high wind gusts. These monsters can be more dangerous than ordinary storms because the damage they cause can be hundreds of miles long. Today, half a dozen states are cleaning up -- 100-year-old trees splintered, streets inundated and thousands still without power. We're out just seeing what we can do to help out to get lines back connected to the houses. Reporter: Tonight more storms are in the forecast and in the area that you're figure to see in the highlighted map, include places like detroit, louisville, d.C., Raleigh, through the southeast into atlanta. But we're looking for winds up to 70 miles per hour, large hail and frequent lightning, which can be just as dangerous as the rgs. That is through tonight and clears through the weekend. Some of the images we saw within that piece. The lightning, incredible over the new york skyline. I want to point out, see how some of the lightning bolts go from cloud to ground. And some cloud to cloud. That intercloud lightning can mean a storm is maturing or just past maturing and decaying. So even though it looks ominous, it can mean the storm is dying out. Impressive and good news. We'll see you on "good morning america" tomorrow.

This transcript has been automatically generated and may not be 100% accurate.

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