A fierce winter storm has been pounding the Northeast and mid-Atlantic states, prompting emergency declarations, blanketing neighborhoods under several feet of snow and shutting down vaccination sites as officials urge residents to prepare for more dangerous …

(CNN)A fierce winter storm has been pounding the Northeast and mid-Atlantic states, prompting emergency declarations, blanketing neighborhoods under several feet of snow and shutting down vaccination sites as officials urge residents to prepare for more dangerous weather Tuesday.
Parts of northern New Jersey have seen more than two feet of snow, with the highest total recorded in Mendham, New Jersey, which received a staggering 30 inches, according to the National Weather Service.
And over a foot of snow has covered areas across Connecticut, Maryland, New York and Pennsylvania.
New York City’s Central Park was covered by more than 15 inches of snow late Monday — placing the storm in the top 20 snowstorms in the city’s recorded history.
“This winter storm is already producing large amounts of snow and creating dangerous travel conditions and it is expected to continue into tomorrow,” New York Gov. Andrew Cuomo said in a statement Monday.
Another two to four inches of snow are possible across the Northeast on Tuesday, while the worst of the snowfall will be in Maine, where much of the state could see more than a foot of snow — and some areas might see up to two feet.
But it’s not just the heavy snow and blizzard-like conditions worrying officials: There are coastal flood alerts — including watches, warnings and advisories — from Maine to the southern shores of Delaware, covering more than 22 million Americans.
The New York governor’s office warned Monday that neighborhoods along the coast could experience “multiple rounds of flooding, especially during high tides.”
Minor to moderate flooding was reported across the region’s coast early Tuesday, enough to flood out basements, roads and cause minor structural damage, according to CNN meteorologist Michael Guy. Water levels are currently about two to four feet above normal, Guy said.
“This type of flooding is extremely dangerous and can be deadly,” Guy added.
Some vaccination sites remain closed Tuesday
Meanwhile, vaccination sites across New York were closed Monday due to the storm and at least five state-run vaccine sites in the state will be closed Tuesday, the governor said.
“For the safety of both workers and individuals scheduled to receive a vaccination, we will be postponing appointments for tomorrow at several vaccination sites that are being impacted by this storm,” Cuomo said in a statement. “To be clear — no one is losing an appointment — they will all be rescheduled when conditions are safer.”
In New Jersey — still under a state of emergency — Gov. Phil Murphy announced state offices and the state’s six vaccine mega-sites will remain closed Tuesday as a result of weather conditions.
“Heavy snow, coastal flooding, and high winds are expected to continue across the state today into tomorrow,” Murphy said Monday. “I urge all of our residents to follow weather-related guidance and stay off the roads in order to allow access for essential workers and emergency personnel.”
In Pennsylvania, where Gov. Tom Wolf signed a disaster emergency proclamation in response to the storm, officials said Monday they were worried about how the conditions would affect vaccinations.
“Throughout the storm, (the Pennsylvania Emergency Management Agency) is working with our state and county partners to make sure we have a clear understanding of the storm and how it is affecting different parts of the state,” PEMA Director Randy Padfield said in a statement.
“We are particularly concerned with shipment and delivery of COVID-19 vaccines, so we appreciate citizens who are taking this storm seriously and staying off the roads because fewer vehicles means fewer incidents that could delay those operations,” Padfield added.
Dangerous travel conditions across the region
As the storm pummeled Connecticut on Monday, Stamford authorities announced they rescued two people from a pick-up truck that was hit by high winds, snow and a strong tide that caused the vehicle to fill with water.
On Monday afternoon, firefighters found the truck partially submerged and floating 40 feet away from the shore, the Stamford Fire Department said in a news release. A female was standing on one side of the vehicle shouting that a male was trapped inside, the department said.
Firefighters swam to the vehicle and were able to get the female out with the help of an aerial ladder, while they worked to rescue the male as the truck quickly became entirely submerged by water,” the department said in its news release.
“One firefighter maintained a physical hold on the man’s arm and was able to pull him through the small window after the truck was completely under water,” the department said. “Once he was free, firefighters placed the man into the tower ladder and both occupants were brought to shore.”
The male was later transported to the hospital, authorities said.
In New Jersey, state police reported Monday night they had responded to more than 660 motor vehicle crashes and more than 1,000 motorist aids in about a day.
“Motorist aids can be anything from flat tires, mechanical breakdowns, spin outs, etc,” state police said. “We urge residents to remain off of the roads.”
CNN’s Taylor Ward, Joe Sutton, Robert Shackelford, Laura Ly, Michael Guy and Evan Simko Bednarski contributed to this report.