Reports: Snowstorm undergoes bombogenesis as it pounds DC to New York City, Boston

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, AccuWeather meteorologist
January 04, 2018, 9:45:24 AM EST

As a nor'easter storms up the East Coast into Thursday, blizzard conditions will spread through the coastal mid-Atlantic and Northeast.

A mix of snow and freezing precipitation was seen moving through the coastal Southeast region, causing travel disruptions across a widespread area - Tallahassee had its first snowfall accumulation since 1989,” said AccuWeather Meteorologist Brett Edwards.

This storm strengthened through Wednesday night as it trudged into the mid-Atlantic, and is expected to bring blizzard conditions to areas from the Outer Banks to eastern New England through Thursday.

"As the system continues to rapidly strengthen, wind gusts up to and over 50 mph can cause near white-out conditions across a widespread area along the northeast," Edwards said.

"Snowfall totals of 1-2 feet can be seen along the New England area."

9:43 a.m. EST Thursday:

"The storm has undergone rapid strengthening, referred to as bombogenesis, according to AccuWeather Senior Meteorologist Alex Sosnowski. "Pressure within the center of the storm crashed 0.95 of an inch of mercury (32 millibars) in nine hours from late Wednesday evening to near daybreak Thursday."

8:53 a.m. EST Thursday:

New Jersey Gov. Chris Christie has declared a state of emergency for four coastal counties and is urging motorists to stay off the roads.

Declaring state of emergency in Cape May, Atlantic, Ocean & Monmouth Counties. All state offices will now be closed. Please stay off the roads and stay sheltered and warm.

— Governor Christie (@GovChristie)

8:07 a.m. EST Thursday:

A snow emergency went into effect for Boston at 7 a.m. Thursday, with snow already falling in the city. The city is expected to receive around a foot of snow by the time the storm concludes.

The Massachusetts State Police said a speed reduction is now in effect between the New York border and Boston.

#Pike Speed reduced to 40 mph NY line to Boston. TT & specially permitted vehicles restricted from travel at this time.

— Mass State Police (@MassStatePolice)

7:26 a.m. EST Thursday:

Snowy and icy travel is being reported around Long Island & New York City as snow continues to spread north.

Alert: Due to reduced visibility as a result of the snow storm, the #StatenIslandFerry will be running on a modified schedule during the morning rush with #SIFerry service every 20 minutes.


5:50 a.m. EST Thursday:

Traffic accidents, power outages and downed trees and power lines are being reported in areas from Washington, D.C., through Philadelphia, New York City and Hartford, Connecticut.

Residents are reminded to call 9-1-1 to report any downed powerlines, and to avoid them completely.

Bands of snow are beginning to strengthen as they sweep into the mid-Atlantic, resulting in high snowfall rates, quickly accumulating snow and poor visibility.

AccuWeather Interactive Northeast radar as of 5:25 a.m. EST on Jan. 4, 2018.

@breakingweather Almost 4 inches on the ground in Little Egg Harbor, NJ as of 4:30 am.

— Edward Crean (@jerseyjam2015)

These factors will make travel perilous today as road conditions quickly deteriorate across the region.

Coastal areas from Cape Hatteras, North Carolina, to Monmouth, New Jersey, are reporting visibility as low as one-half to one-quarter mile due to heavy snow.

Where heavy snow is falling in the Susquehanna Valley of Pennsylvania, visibility is down to 1 mile.

Travel will continue to be dangerous across New England, much of the mid-Atlantic and eastern New York today, and should be avoided as much as possible.

Hundreds of school districts have canceled school for the day from the Carolinas through the mid-Atlantic and Northeast. In Washington, D.C., even the federal government is running on a two-hour delay.

3:50 a.m. EST Thursday:

Snow is now falling along coastal New Jersey; Long Island, New York; Connecticut; Rhode Island and eastern Massachusetts, limiting visibility and slowing traffic.

Just inland from Atlantic City, New Jersey, snowfall rates of 2 inches per hour were reported in the town of Mays Landing around 2:30 a.m.

Half of a foot of snow has been measured near Virginia Beach, where heavy snow is still falling. Nearly 20,000 customers are currently without power in the area.

Winds are starting to pick up in these areas as well, with widespread gusts to over 35 mph from the Outer Banks to the Jersey shore.

Flights in and out of the Northeast are being canceled and delayed; anyone planning travel in the area should check with their airline for up-to-date information.

AP News reports that a train has derailed in Savannah, Georgia, where a rare 0.23 of an inch of snow and ice accumulated on Wednesday.

In this image made from video, police and rescue vehicles park near an Amtrak passenger train derailed in the snow, Wednesday, Jan. 3, in Savannah, Georgia. An Amtrak spokesman has said three cars on a passenger train have derailed in Savannah, Georgia, but there were no injuries reported among the crew and 311 passengers aboard. (WTOC via AP)

“All three cars — a baggage car and two sleeper cars — are fully upright,” Amtrak spokesman Jason Abrams said in an email early Thursday to The Associated Press.

He said there were no injuries among the 311 passengers and crew on board.

2:00 a.m. EST Thursday:

Locations across the southeastern U.S. broke low temperature and snowfall records on Wednesday, and this wintry weather is now well on its way to the Northeast.

Vehicles move along a snow and ice covered Interstate 26, near Savannah, Ga., Wednesday, Jan. 3, 2018. A brutal winter storm dumped snow in Tallahassee, Fla., on Wednesday for the first time in nearly three decades before slogging up the Atlantic coast and smacking Southern cities such as Savannah and Charleston, South Carolina, with a rare blast of snow and ice. (AP Photo/Robert Ray)

Snow has reportedly began falling in Philadelphia, marking the first flakes of a potential 6-inch snow event.

At least a coating of snow is expected tonight from Richmond, Virginia to Baltimore and Allentown, Pennsylvania, quickly limiting visibility and making roads slick. Travel will become dangerous at the onset of snowy weather across the region through Thursday, and should be avoided.

Traffic map as of 2:00 a.m. EST Jan. 4, 2018. via Google Maps

Wind gusts of nearly 50 mph were reported in Oceana, Virginia, this evening, and gusts are exceeding 35 mph in Ocean City, Maryland at this hour.

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