In addition, a flood watch was in effect for 20 million people from Buffalo, New York, to Boston, as part of a different weather system that's bringing rain and unseasonably warmer temperatures to the Eastern Seaboard.

"We're real concerned about the potential flooding because already you got snow," said Weather Channel meteorologist Heather Tesch. "You're going to see the snow melting. You add rain on top of that — you’re going to find, too, we could see some ice jams coming in."

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