After more than a decade, the National Weather Service has officially adopted an experimental short-range weather model capable of providing more precise predictions under rapidly changing storm conditions.
Cold air and high snow amounts will define the season in the Northeast and mid-Atlantic while drought conditions persist in northern California.
Heavy rain will soak areas from the Ohio Valley to the Southeast Tuesday night.
A widespread outbreak of severe weather slammed a large portion of the U.S., from the Gulf Coast to the Tennessee Valley, putting more than 20 million lives in the storm's reach.
Severe thunderstorms, damaging winds and disruptive rain will impact Texas and the Mississippi Valley early this week.
A fleeting but devastating microburst slammed parts of Easthampton, Massachusetts, in the early morning of Wednesday, Oct. 8, flattening trees and battering homes.
Severe storms raked across areas from Texas to Missouri and Kentucky on Thursday, cutting power to hundreds of thousands of customers and cancelling hundreds of flights from major travel hubs.