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In a measurement of pure kinetic energy, NOAA's hurricane research division on Sunday ranked the surge and wave "destruction potential" for Sandy — just the hurricane, not the hybrid storm it will eventually become — at 5.8 on a 0 to 6 scale. The damage expected from winds will be far less, experts said. Weather Underground meteorologist Jeff Masters says that storm surge destruction potential number is a record and it's due to the storm's massive size.
"You have a lot of wind acting over a long distance of water for hundreds of miles" and that piles the storm surge up when it finally comes ashore, Masters said. Even though it doesn't pack much power in maximum wind speed, the tremendous size of Sandy — more than 1,000 miles across with tropical storm force winds — adds to the pummeling power when it comes ashore, he said.