America's Eastern Seaboard is bracing for Hurricane Sandy.
The storm is barreling up the Atlantic Ocean and likely to converge with two other major weather systems — a winter storm in the west and a blast of cold air from Canada — as it moves ashore.
The combined effect could be devastating.
"Most experts agreed that if the worst-case scenarios play out, it could be the most severe storm to hit the East Coast in a generation," The New York Times' Marc Santora writes.
Here's what to expect if Sandy makes landfall.
Hurricane Sandy is currently churning up the Atlantic with sustained winds of 75 mph.
The storm is beginning to spread out as it nears the U.S. East Coast.
The latest computer models have Sandy landing somewhere between Delaware and Long Island.
It has all the elements to turn it into a megastorm.
"Take a hurricane moving up from the south. Mash in a colder storm moving in from the west. Add a ridge of high pressure extending through the atmosphere above the northeastern Atlantic Ocean and Greenland, blocking the typical flow of the jet stream. That’s the recipe for what will become 'Post-Tropical Storm Sandy,'" writes The Scientific American's David Biello.
Sandy could leave millions of people without power for more than a week.
"Generally, plan for a scenario where you are out of power for at least 3 days to up to a week due to strong winds and the likelihood of some downed trees and power lines," The Washington Post's Jason Samenow says.
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