December 19, 2013; 9:40 PM ET
Dry and sunny conditions will continue in San Francisco for the the official start to winter and the Christmas holiday. more >
Becoming noticeably warmer tomorrow
A wild weather phenomenon that causes massive winter flooding in California also dumps snow in East Antarctica, wetting one of the driest places on Earth.
Where is the coldest temperature ever measured on Earth?
Dec 19, 2013; 5:00 AM ET It's been debated for many years. Global warming is a hot topic and we asked around to see what some people think about the subject. Valerie Smock has more.