New York City's 81st annual Columbus Day Parade on Monday was cancelled due to the governor's state of emergency order and inclement weather spurring floods across the tri-state area.

The Columbus Citizens Foundation, which organizes the parade through Manhattan, announced the cancellation late Sunday evening, just over 12 hours ahead of its scheduled start time.

The parade won't be rescheduled, the group added.

"Due to the Governor’s declaration of a State of Emergency this evening in response to the dangerous weather conditions brought on by the Nor’easter, including high winds, heavy rain and flooding in surrounding areas, we must cancel the 81st Annual Columbus Day Parade for the safety of all participants and viewers," the CCF wrote in a statement obtained by FOX 5 NY. 

"While we cannot reschedule this year’s parade, we look forward to seeing everyone at our 82nd annual parade in 2026."

The state of emergency, announced by Gov. Kathy Hochul early Sunday morning, is in effect for all five boroughs as well as Nassau, Suffolk and Westchester counties.

The entirety of New Jersey was placed under a State of Emergency as well.

Both orders are expected to last through Monday evening as the nor'easter continues to batter the East Coast.

Shocking video captured floodwaters inundating entire streets of a coastal New Jersey town as the ongoing Nor’easter batters the region.

The footage, posted by The Weather Channel and across social media, showed heaps of bay water engulfing the town of Avalon Bay as early as 1 p.m. on Sunday. 

Streets were empty as the floodwater swallowed the idyllic shore town.

Coastal flood warnings are in effect in the region until 8 p.m. Monday, where rounds of 2 to 3 feet of floodwater inundation are possible around high tides, Weather Channel forecasters said. 

The worst of the flooding is expected at the next two high tides -- overnight at 12 a.m., and Monday afternoon at 12 p.m. -- with surges of 3 feet possible, and waves as high as 15 feet crashing into the shore.

High wind warnings are also in effect until 6 a.m. Monday, with wind gusts of up to 60 mph possible.

The National Guard was activated in Delaware as the Nor'easter brings flooding and damaging winds to the state.

Some coastal towns like Bowers Beach have been issued voluntary evacuation orders, Delaware Online reported.

Shelters have even been set up for anybody forced to flee their homes during the storm.

New York Gov. Kathy Hochul declared a state of emergency across New York City and much of the metro area as the Nor'easter blew in Sunday.

In addition to NYC, the state of emergency covers Nassau, Richmond, Suffolk and Westchester counties, Fox 5 reported.

The declaration frees up funding to address damage the storm may bring with it.

New Jersey declared a state of emergency on Saturday night.

New York City, New Jersey could see wind gusts up to 60 mph by the Nor'easter crashing through the region Sunday into Monday, with rain persisting and "major" coastal flooding from towering waves possible across Long Island and down the length of Jersey, according to the latest forecasts.

Sustained winds began kicking up Sunday around 3 p.m., and on the coast will reach highs between 40 and 50 mph -- but the gusts could reach even higher, according to Fox Weather.

Further inland, sustained winds between 30 and 40 mph are expected.

The winds will persist into Monday afternoon.

Rain will fall throughout Sunday afternoon into Monday morning -- and while it remain generally light, periods of heavy rainfall could surge throughout.

About 2 inches of rain could fall across the region by Monday evening, according to Fox. Further north, the Boston area and south to Rhode Island could see up to 3 inches of rain.

The worst of the flooding will come at the next two high tides -- overnight at 12 a.m., and Monday afternoon at 12 p.m. -- with surges of 3 feet possible, and waves as high as 15 feet crashing into the shores.

"The primary concern is along the immediate coast for moderate to major coastal flooding through Monday afternoon," Fox Weather meteorologist Cody Braud told The Post.

Those conditions will be felt the worst from the Long Island Sound down the length of New Jersey to the Delaware Bay, Fox forecast.

Inclement weather will have moved out by Tuesday, but gusts up to 25 mph could remain.

"Most people think Nor’easters, most think of the snow and winter first. In this instance, it is all rain, wind, and coastal flooding," Braud said.

"The main area of low pressure tied to the Nor’easter will move east into the open waters of the Atlantic on Tuesday. Some coastal flooding could linger into the midweek, but it will be minor compared to the next 24-36 hours."

New York and New Jersey airports are facing serious delays over the Nor'easter.

Newark International Airport has delays of around 80 minutes for many flights, with planes headed to the airport from across North America even being ordered by the FAA to hold at their departures, NJ.com reported.

Thick clouds and strong gusts are to blame, with aviation regulators hoping to keep the skies as clear as possible.

JFK International Airport, as well as travel hubs in Boston, Philadelphia and Washington, DC, are also facing similar delays.

NJ Transit has also suspended trains between Long Branch and Bay Head, beginning at 1 p.m., and the train between Atlantic City and Philadelphia has been suspended.

The MTA is staging a "fleet" of response vehicles and personnel along its routes to tackle flooding and debris during the nor'easter.

"Pump trains" and "debris trains" will be running through the subway systems to respond to flooding beginning Sunday and into the early week, the MTA announced ahead of the storm.

Drains and vents at "flood-prone" locations have also been inspected and cleared.

"Personnel are staged at critical locations including stations and yards, ready to deploy and respond if flooding conditions develop," the MTA assured in a notice Sunday.

Teams are also monitoring the Long Island Railroad and Metro-North lines with chain saws for fallen debris, while empty flatbed trucks have been banned from city bridges beginning 3 p.m. Sunday until 6 p.m. Monday.

The MTA's response comes after heavy rainfalls in recent years have left parts of the subway system flooded, with dramatic footage from frustrated straphangers quickly going viral on social media.

The worst of the nor'easter bearing down on the East Coast hasn't yet hit New York City, but a handful of local surfers are already enjoying the storm-swollen waves in Red Hook and Far Rockaway.

"They're just good waves. Bigger and heavier than usual. Right now they're like, five feet. They're supposed to be like, eight feet tomorrow but I've got school," Ulysse Rombaux, 17, who was surfing in Rockaway, told The Post before jumping back in the water.

His father, Alban, wasn't too worried. "I'm gonna keep my eye on him, but he knows the water and knows when to get out."

Andrew Oakley, 35, owner of Phase Surf on 96th Street, said he decided not to rent out any surfboards Sunday, which angered some who wanted to try their hand in the choppy waters.

"There's a lot of current and challenging conditions, so it's a little dangerous. I'd say for the majority of people I wouldn't recommend going on. Tomorrow is going to be even bigger," he told The Post.

“During hurricane Erin, because the storm got so much hype and press, a lot of people were trying to come out and rent," he said.

"But I just wasn't doing rentals because I didn't want to take that risk ... I'm sure a lot of people were not good enough surfers to go out and do it, and it's impossible for us to be able to tell the difference if someone is just pretending they know what they're doing or if they don't."

Oakley said he's already secured his shop, strapping down the surfboards so they don't get swept out to sea if the expected flooding and winds intrude on his storefront.

The Federal Aviation Administration has issued ground delays at several airports due to the nor'easter, with average delays inching toward two hours in some locations.

As of 12:35 p.m. Sunday, passengers at Boston Logan International Airport are being told to expect an average delay of 86 minutes due to low ceilings, and 80 minutes for those traveling through Newark Liberty International Airport.

LaGuardia Airport travelers are looking at delays of around 106 minutes, with JFK Airport not faring much better at average delays of 102 minutes.

Philadelphia International Airport and Ronald Reagan National Airport in DC were experiencing the shortest delays so far, with 32 minutes and 26 minutes, respectively.

The massive nor'easter, which started to pick up steam on Sunday morning, is expected to bring significant coastal flooding and powerful winds with gusts up to 60 miles per hour from Charleston to New England.

Livestreaming video shows an imperiled house on Hatteras Island in North Carolina holding on for dear life as the Atlantic Ocean unrelentingly batters it with waves.

Fox Weather Exclusive Storm Tracker Mark Sudduth trained a camera at the green house, located in Buxton, which is at the mercy of the sea as waves crash into the wood pilings keeping the home elevated above the raging sea.

A portion of the Outer Banks home's balcony already collapsed during a live segment by Fox weather correspondent Katie Byrne, and it appears destined to be another casualty of the vicious nor'easter slowly crawling up the Eastern Seaboard.

Roadways in Myrtle Beach, South Carolina have started flooding as a massive nor'easter winds its way up the East Coast.

Video shared by local chief meteorologist Jamie Arnold shows vehicles carefully traversing Ocean Boulevard as the city's drenched main drag is already covered in several inches of water.

Arnold says the storm system, which is expected to bring flooding and wind gusts between 40-60 mph from Charleston to New England, has already dumped 3-6 inches of rain on the Palmetto State's coast, with as much as 7-8 inches in other areas.