janet davies saw the gathering storm from her plane silting on the runway. >> the sky was that purple and green and orange you see in the movies. immediately when we got into the terminal, we were told to go to shelters in the terminal, which are actually, most of them, the restrooms. >> reporter: it's a scene becoming all too familiar. the tornadoes in joplin, missouri, killed 153 people, almost one year ago, and just last month a series of twisters battered ohio and indiana. earlier in the season than the region had ever seen before. though it's hard to know whether the wacky march weather in which over 7,000 record high temperatures were recorded has had anything to do with it. we haven't found really much of a linkage between the warm weather that we saw especially the warm weather in march and what we're seeing now. in fact, this part of texas, tarrant and dallas-ft. worth counties, they experience a couple of these tornadoes every year. it's not uncommon to see tornadoes, especially in april in this part of texas. >> unbelievable. >> reporter: though they weren't used today, the