Millions are cleaning up and assessing the damage after some of the worst flooding in a generation.
About two trillion gallons of rain fell up and down the east coast.
Cars can be seen floating.
Pensacola, Florida was the hardest hit, with 15 inches of rain in 24 hours submerging entire neighborhoods.
Our Alina Machado is in Pensacola, where she spoke to a man who describes how he survived the historic flooding.
Tornadoes killed 16 people in Arkansas, Oklahoma and Iowa. "It's chaos here," said one mayor. Severe weather is forecast today in the South and Midwest.
CNN's Erin Burnett has the latest.
Record breaking ice is bringing America's Great Lakes to a standstill.
Ninety-three percent of Lake Michigan is covered in ice, according to the National Weather Service. The last time the lake was this frozen, it was 1977.
Satellite images from the last couple of weeks show just how expansive it is.
CNN's Ted Rowlands is OutFront on a coast guard ice breaker with the story.
Cloudy with a chance of pop star - one of the world's most famous performers, Katy Perry, performs in front of a weather map.
The singer adds to a long list of celebrities playing weather forecasters.
CNN'S Jeanne Moos reports.
Television weathermen have to deal with everything from hail storms to hurricanes, but what happens when it starts raining spiders?
CNN's Jeanne Moos has the answer OutFront.