WHY IS SANDY A SUPERSTORM?
HURRICANE SANDY is expected to become an extratropical storm. Unlike a tropical system like a hurricane, which gets its power from warm ocean waters, extratropical systems are driven by temperature contrasts in the atmosphere
SANDY IS EXPECTED to merge with a wintry system from the west, at which point it will become the powerful superstorm. Frigid air from Canada also is expected to get ingested into Sandy, which will only help to strengthen the storm further. Officials are expecting a foot of rain, high winds and up to 2 feet of snow
HURRICANE-FORCE WINDS of at 74 mph could send tree branches into power lines, or topple trees and power poles. Those left standing could succumb to snow