Big Picture: What Prompts A Tornado Warning A tornado warning is ... which indicates that a tornado could be in progress or that one could form at any time. When "radar indicated rotation" is ...

A sweeping storm system moving across the U.S. threatens to bring tornadoes, blizzards and possibly ... warmth and lingering winter cold create big temperature differences for storms to thrive.

The storm system is expected to bring rain to California’s central coast Friday, a day after the National Weather Service confirmed a tornado touched down in East Los Angeles as a large strong ...

When atmospheric conditions favor the development of severe storms, tornadoes can form. The recipe for a tornado requires a few important ingredients ... and more homes have safe rooms able to ...

while a tornado watch simply means the right weather conditions exist for tornadoes to form. (Photo credit: Seminole County Fire Dept.) Advertisement Tower cameras showed debris flying as the ...

A huge storm system crossing the U.S. threatens to unleash tornadoes Friday in the Mississippi Valley, blizzards in the northern Plains and dry, gusty conditions in Texas and Oklahoma that pose a ...

A huge storm system crossing the U.S. threatens to unleash tornadoes Friday in the Mississippi ... warmth and lingering winter cold create big temperature differences for storms to thrive.