Snow-Weary East Now Braces for Floods

Rain and rising temperatures in the forecast over the next few days threaten to melt this week’s mammoth snowfall in the East and cause disastrous floods, officials said Wednesday.

In Pennsylvania, emergency management officials urged people to prepare for high water by selecting an evacuation route, clearing snow from flat roofs and stocking up on supplies.

“With all of this snow on the ground, the potential is there for serious flooding,” said David M. Sanko, director of the Pennsylvania Emergency Management Agency. “We’re hoping that the snow melts slowly, but as history has shown us over and over again, warming temperatures can lead to disaster.”

The forecast called for 1 to 2 inches of rain Friday night into Saturday, said Walt Nickelsberg of the National Weather Service’s office in Mount Holly, N.J.

“It’s really a watch-and-see type of situation,” he said. “If we get the 1 inch, I feel confident that we wouldn’t get the flooding. If we get the 2 inches, it’s possible to start seeing some flooding.”

Nationally, the death toll from the storm rose to at least 59 on Wednesday after a preliminary autopsy showed a woman whose body was found Sunday in Newark, Ohio, had died of exposure.

In Virginia, communities in the Shenandoah Valley and the mountainous regions in the north were warned to lock down their belongings and move to higher ground.

“It’s not often that you know ahead of time about a flood,” said Dawn Eischen, a spokeswoman for the Virginia Department of Emergency Management. “With three or four days ahead of time, we’re trying to do something right now.”

In Harrisburg, Pa., where 21 inches of snow fell, city officials took precautions against a repeat of a 1996 flood in which the Susquehanna River rose 10 to 15 feet in a day, causing tens of millions of dollars in damage.

City workers readied pumps, boats, sandbags and other materials. And they raced to clear as much snow as possible from the streets so there would be less left to melt.

New York City fired up municipal machines capable of melting 60 tons of snow an hour.

In Baltimore and New Jersey, authorities urged residents to shovel snow from sewer grates to give rain and melting snow a place to go.