Residents hit by massive snow storms in Buffalo, New York, last week are preparing for evacuations amid fears of flooding as temperatures climb back up towards 16C.
The US National Weather Service has issued a flood warning and cautioned that trees weakened by heavy snowfall and saturated soil could come crashing down.
High wind gusts of up to 60mph could also topple electrical wires and trigger power outages. Forecasts have predicted showers on Monday and a chance of more rain and snow by early Tuesday.
Governor Andrew Cuomo warned residents in flood-prone areas around Buffalo to move valuables up from their basement, pack a bag and prepare for the possibility of evacuation.
Mr Cuomo said evacuation plans and emergency shelters were being readied in case of flooding. As a backup to Red Cross shelters, Mr Cuomo said the state would have shelters at community colleges and state university campuses.