Hurricane Sandy may push a life- threatening wall of water onto the Northeastern U.S., setting a record storm surge in Manhattan while whipping the region with high winds and rain.
The expected surge at New York’s Battery Park will be 11.7 feet (3.5 meters) at 8:30 p.m. tomorrow, more than 2 feet higher than the water Hurricane Irene sent onto the shore last year and higher than the 10.02-foot record set September 1960 by Hurricane Donna, said Sean Potter, a National Weather Service spokesman in Upton, New York.
“That is assuming that it does occur with the high tide,” Potter said by telephone.
Irene caused flooding in the Battery, at the southern tip of Manhattan, when it struck in August 2011. Normal high tides generally just top 5 feet, according to data from the U.S. Advanced Hydrologic Prediction Service. Flood stage is 6.7 feet.
“It couldn’t be a worse scenario with the storm coming around with a full moon,” said Mark Hoekzema, chief meteorologist at Earth Networks in Germantown, Maryland. “The full moon with the high tides are going to add another 1 to 2 feet and then there is wave action on top of that.”
The system may also leave 3 feet of snow in the Appalachians, the weather service said.
Sandy’s punch may be felt from Virginia to Massachusetts, said Rick Knabb, director of the National Hurricane Center. High wind warnings and watches for gusts as strong as 70 miles (113 kilometers) per hour stretch from Maine to North Carolina and as far west as Ohio, according to the weather service. Flood watches and warnings cover most of the Northeast and mid- Atlantic coasts.
Hurricane force winds of at least 74 mph are expected from Chincoteague, Virginia, to Chatham, Massachusetts, said the hurricane center in Miami.
Heavy rain and high winds are also expected across southern Ontario and Quebec, according to Environment Canada.
Sandy’s maximum sustained winds were steady at 75 miles per hour as of 8 p.m. New York time, the hurricane center said in an advisory. It was centered about 280 miles east-southeast of Cape Hatteras, North Carolina, and about 485 miles south-southeast of New York, moving northeast at 15 mph.
The storm has already killed at least 65 people throughout the Caribbean, according to the Associated Press.
Hurricane-strength winds of at least 74 mph extend 175 from Sandy’s core and tropical storm force reach 520 miles, according to the hurricane center. The storm is the second-largest in size since 1988, tied with Hurricane Lili in 1996, according to Angela Fritz at Weather Underground in Ann Arbor, Michigan. The largest was Hurricane Olga in 2001.
Sandy is taking its unusual track into the East Coast because a number of weather systems have come together in just the right way, Louis Uccellini, director of the National Centers for Environmental Prediction, said last week.
To Sandy’s east, a phenomenon called the North Atlantic Oscillation is acting like a closed door, barring the storm from moving in that direction. To the west, a cold front and another storm are creating a pattern that will pull Sandy toward them as it evolves into the superstorm some in the Weather Service have dubbed “Frankenstorm.”
The hurricane center predicts as much as 3 feet of snow may fall in West Virginia and as much as 2 feet in the mountains of Virginia to Kentucky. As much as 12 to 18 inches may fall in the Appalachians in North Carolina and Tennessee.
The hurricane center’s five-day outlook shows the system turning north over Pennsylvania at tropical-storm strength before weakening as it crosses into New York State, over Lake Ontario and into Canada.
As it passes, temperatures will drop in interior parts of West Virginia and the Appalachians to around 20 degrees Fahrenheit (minus 7 Celsius) and in the 30s and 40s throughout much of the rest of the Northeast and mid-Atlantic states, which could lead to problems for people without power, Knabb said.
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