More than 100 people have died from storms in the last week, officials say.

As millions of Americans hunker down for the winter storm, at least 23 states and Washington, D.C., have declared states of emergency.

New research reveals atmospheric signals that appear before deadly flash floods, helping forecasters detect extreme rainfall events sooner.

Add Yahoo as a preferred source to see more of our stories on Google. ABC News' Chief Meteorologist Ginger Zee reports on the massive winter storm now taking aim at the East Coast, delivering ...

A major winter storm has dumped heavy snow and brought record low temperatures to the South. Freeze warnings are still in effect tonight for Georgia and Florida. NBC News’ Aaron Gilchrist reports from ...