As a violent and deadly month of tornadoes comes to an end, the atmosphere over parts of the U.S. will continue to produce ...

Last year was a record year for tornadoes in Iowa, with many of them occurring in April and May. What's normal for a tornado ...

Spring can bring flip-flopping weather patterns that range from bursts of warmth to winter's lingering chill. Together they create the key ingredients for severe weather, including deadly tornadoes.