"Dual-Pol" radar providing time in tornadoes

March 1, 2012 4:23 PM

Thanks to Dual-Pol radar technology, residents in Branson, Mo., had 25 minutes to take cover - double the national average - from the tornadoes that pulverized the Midwest. Mark Strassmann reports on the most significant upgrade to tornado tracking in twenty years.

Early twister detection tech gets an upgrade

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