Thundersnow, also known as a winter thunderstorm, happens when a snowstorm is accompanied by thunder and lightning. As of ...

A few tornadoes and hail cannot be ruled out. The line will weaken as it crosses the Mississippi River. Areas east of I-55 ...

More than 70 million Americans are under winter weather alerts Sunday night as a fierce storm barrels across the country. At least six governors have declared states of emergency amid bitter cold and ...