>> now, dr. forbes, the technology to track these storms, both on the ground, and i know that cantore and the doommobile has been doing this more aggressively this year. are we getting the type of data we need from this tracking that is going to increase the ability to warn folks, maybe they get more warning, rather than 16, 20 minutes, but maybe it gets up to an hour, two hours. >> reporter: yeah, certainly, one piece of new technology that has been deployed across the united states now with all the radars, they've been upgraded to what's called dual pole. so that instead of just seeing the return on radar, it with see the nature of what's in it. and there's a particular signature that if things are in the inside the beam and tumbling, that shows up. it's called a correlation signature. and that one was being -- was pegging the radar in terms of this particular tornado, that there was a destructive tornado in progress with lots of debris