The area is expected to get 3 to 6 inches additional snow accumulations overnight, according to the National Weather Service.

UPDATE: 9:05 PM

Bradley International Airport said 40 percent of flights were canceled during Wednesday’s storm.

Some cancellations and delays are expected Thursday morning. Those expected to travel are encouraged to check with their individual airline before leaving for the airport.

Real time flight status updates are available on our website, www.flybdl.org. Twitter users can also receive automated updates by tweeting their flight number @BDLFlightInfo.

UPDATE: 6:55 PM

For the remainder of the winter storm warning — which expires at 6 a.m. Thursday — portions of northeast New Jersey, southern Connecticut and southeast New York can expect additional snow accumulations of 3 to 6 inches, the NWS said in its most recent update of the warning.

The hardest hit areas will be New York City and Nassau County.

Travel conditions have been downgraded from “difficult to nearly impossible” when the warning was first issued Tuesday to just difficult Wednesday evening. Significant visibility reductions are possible.

UPDATE: 6:30 PM

Snowfall, switching between moderate and light into Wednesday evening, is expected to pick up again in Stamford between 7 p.m. and 3 a.m. Thursday, said Ted Jankowski, director of public safety, health and welfare.

Three to five inches fell on the city during the day, he said, and meteorologists with the National Weather Service are expecting an additional three to five more.

Although there have been brief respites, the nor'easter is still expected to make driving in the evening and the morning commute rough.

"As temperatures drop below freezing road conditions will be hazardous," Jankowski said in an email. "The impact on travel is expected to be moderate overnight with moderate to heavy snow falling and sticking to roads after dark."

There have now been four car accidents in the city during the storm, Jankowski said, adding that Newfield Avenue has been re-opened after a car downed a pole on the road earlier in the day.

The city's snow emergency declaration, the Winter Storm Warning and a Coastal Flood Advisory remain in effect.

UPDATE: 6:20 PM

The NWS said snow is mostly expected before 5 a.m. and could be heavy at times.

The temperature should hover in the area of 30 degrees, with winds between 17 and 20 mph putting wind chill values between 20 and 25 degrees. Gusts up to 31 mph possible.

The total nighttime snow accumulation is expected to be anywhere from 5 to 9 inches, the NWS said.

UPDATE: 4:50 PM

The storm seems to have stymied over Stamford as snowfall has reduced to light flurries. But Ted Jankowski, director of public safety, health and welfare, said the break is most likely temporary.

“I’d like to hope this is the end of it,” he said. “But the weather service is still predicting we’ll see more snow.”

The NWS predicted Stamford would receive from 6 to 12 inches by the end of the storm. Judging from the visible accumulation outside, it appears the city has received about four inches so far.

UPDATE: 4:45 PM

The NWS said snow accumulation totals are now in the range of 6 to 9 inches for northern and southern Fairfield and New Haven counties, as well as parts of New York and New Jersey.

The winter storm warning remains in effect until 6 a.m. Thursday.

Difficult travel conditions are still expected during the evening commute. Significant visibility reductions are likely.

“A combination of the heavy snow and wind gusts up to 35 mph could bring down tree limbs and power lines, creating power outages,” the NWS said.

As of 4:45 p.m., Eversource and United Illuminating were not showing any outages in Fairfield County.

UPDATE: 4:25 PM

Despite no snow sticking to the roadways in the city just yet, road conditions in Bridgeport are expected to get worse, officials said.

“Please travel carefully if you must go out,” a tweet from the Emergency Operations Center said.

UPDATE: 4:20 PM

Bradley International Airport said its crews remain on stand-by for snow removal operations as of 4 p.m.

Airlines have been adjusting schedules in anticipation of the storm. About 40 percent of flights have been canceled, mostly impacting the afternoon and evening flights. The airport said further cancellations are possible as the storm evolves.

Those expecting to travel with the airport Wednesday are encouraged to check with their airline before heading to the airport. Several airlines have issued travel waivers.

Flight status updates are available at www.flybdl.org. Twitter users can received automated updates by tweeting their flight number to @BDLFlightInfo.

UPDATE: 4 PM

Westport firefighters have responded to multiple motor vehicle accidents Wednesday, officials said.

“Be smart. Play it safe. Stay home,” the fire department encouraged on social media.

The department said many injuries and accidents happen because of slippery conditions. But if you must drive, officials said, you should tell someone your destination, route and expected time of arrival.

UPDATE: 3:30 PM

Darien’s Director of Public Works Ed Gentile warned residents to avoid the roads as crews continue to remove snow.

"More snow to come," Gentile said in an email Wednesday afternoon. "So stay off the roads so we can clear them safely."

Over in New Canaan, police Chief Leon Krolikowski delivered a similar message.

"Roads are starting to get covered and slippery," Krolikowski said via email. "Great if everyone can stay off the roads so our public works and emergency services crews can work."

UPDATE: 3:15 PM

Fairfield

Police remind residents that the town’s snow emergency parking restrictions are in effect. That means parking is prohibited on: Reef Road, Fairfield Beach Road, Rowland Road, Penfield Road and Beach Road. Overnight parking is available at Veterans Park and Penfield Pavilion. Restrictions will remain in effect until all snow removal operations are completed.

Greenwich

The Board of Selectmen meeting has been rescheduled fro 10 a.m. Friday in the Town Hall Meeting Room. Greenwich police said the town had its first accident of the storm roughly 20 minutes ago.

“Wet heavy snow is starting to accumulate,” Greenwich police said. “Please limit your travel until after the storm.”

There are currently no power outages in Greenwich. The town remains in a snow emergency state as crews work to plow roadways.

New Canaan

Road conditions are getting worse, New Canaan police said.

“Please stay off the roads so our public works and emergency service crews can work,” police urged.

All classes/activities after 11:30 a.m. Wednesday were canceled at Norwalk Community College.

UPDATE: 3 PM

The snow has started to stick in Stamford and roads are quickly becoming treacherous. A winter storm warning remains in effect until 6 p.m. Thursday night as anywhere from six to 12 inches of snow are expected in the Stamford area as a fourth nor’easter storm hits New England. The National Weather Service said it is possible as many as 15 inches could hit Stamford by the storm’s end.

According to Ted Jankowski, director of public safety, health and welfare, Stamford has seen minor accumulation as of 3 p.m., but snow intensity is expected to increase significantly in the coming hours.

Jankowski said current roads conditions are wet and slushy, however as snowfall increases its impact of the afternoon commute is expected to “create hazardous conditions.”

So far, Jankowski said two vehicle accidents have been reported. One wreck, he said brought down a pole at Newfield Avenue and White Oak Lane.

Earlier in the day, the Eversource outage map showed power approximately 144 in Stamford. The map shows those outages have since been restored and no new outages have been reported.

“The Office of Public Safety Departments are prepared and are responding to emergencies,” Jankowski said. “The Department of Operations has more than 40 individuals and vehicles responding to this snow storm … pretreating roads and are prepared for the winter storm response.”

Jankowski said the Army Corp of Engineers is staffing the hurricane barrier for Wednesday afternoon’s high tide cycle. Minor flooding is expected, he said.

UPDATE: 1:40 PM

Snow is now falling at its heaviest rate in southwestern Connecticut. Visibility is starting to decrease.

UPDATE: 1:17 PM

Eversource and United Illuminating are reporting on a handful of outages.

UPDATE: 12:45 PM

When the heavy snow finally comes, the state Department of Transportation will be ready.

DOT says it has as 634 plow trucks and 200 private contractors ready to clear the roads.

Materials are stockpiled at roughly 50 satellite facilities throughout the state. The department also has 17 loader-mounted snow blowers that are capable of each moving 1,500 tons of snow per hour

UPDATE: 12:38 PM

Gov. Dannel P. Malloy will partially activate the state's Emergency Operations Center Wednesday at 2 p.m. to monitor storm conditions across the state and prepare for winter weather that is forecast to have an impact on afternoon trave

UPDATE: 12:20 PM

Weather Channel meteorologist Greg Postel said that this storm will differ from the last three in that we’ll see less intense snow bands this time around.

“The earlier storms all had well-defined lows - this one isn’t as well-organized,” he said. “With this storm, everybody gets it.”

Postel said that the most intense snowfall will occur in southwestern Connecticut between 6 p.m. and midnight.

As for the coming weeks, Postel said that we won’s see any “sustained spring-like weather” anytime soon.

“The jet stream in in a weird place over the North Atlantic right now,” he said. “And that’s increasing the likelihood of below-normal temperatures.”

UPDATE: 12:02 PM

Snow is actually getting lighter, not heavier as earlier forecast.

UPDATE: 12 PM

As the region braces itself for the fourth nor’easter this winter, Stamford residents were decidedly over the snow.

“I stopped paying attention,” said Stamford resident Hannah Wright while taking a break from working from home to get Starbucks.

The Starbucks connected to the Ferguson Library offered residents refuge from the light dusting of snow falling on the city since the early morning. But the Ferguson Library, Lorca Coffee Shop and other downtown businesses decided to close up shop to brace for the heavier snowfall to come.

Wright, who lives downtown and works in Norwalk, said she decided to work from home to avoid getting stuck at the office, but wasn’t following the hype surrounding the storm.

“This is the fourth nor’easter,” she said. “It doesn’t excite me. It’s not bad compared to other storms.”

Despite the light snow in the morning, downtown Stamford was quiet and its streets bare. Many people took shelter in the McDonald’s on Bedford Street or in G-Smile Nail Spa which remained open so those not working could get pedicures.

Stamford schools opted for an early dismissal. Around 11 a.m., students from Stamford High began spilling out of the school and onto the streets. Despite the so far mild weather, they weren’t looking to hang out.

“I’m going home!” one student cried.

Sal Ahmad, a Stamford resident who works in IT, also got out of work early. He was waiting for a local sandwich shop to open so he could grab something to eat before heading home for the rest of the day.

A recent Connecticut transplant from San Francisco, this was only the second snow storm he’d ever experienced.

“The hype (surrounding the snow) is OK,” he said. “Last time I tried walking outside and my toes almost froze.”

UPDATE: 11:40 AM

NWS reports only light snow accumulation on other grassy, non-pavement surfaces.

UPDATE: 11:07 AM

Hundreds are without power in Greenwich and Stamford.

Eversource reports 279 outages in Greenwich and 144 in Stamford.

Five customers are without power in New Milford.

UPDATE: 10:39 AM

Light snow reported across southwest Connecticut.

Central Park in NYC reporting heavy snow.

Temperatures are: 35 at Tweed-New Haven Airport, 34 at Sikorsky Memorial Airport, 33 at Danbury airport and 30 at Oxford airport.

UPDATE: 10:16 AM

NWS: After 10 a.m., expect more steady snowfall to move into portions of coastal Connecticut.

This will be moderate to potentially heavy between 10 and 11:15 a.m., making for occasional visibilities of a half-mile or less and some light accumulations of snow of near an inch. Snow on the roads will make for very slippery conditions.

UPDATE: 10:07 AM

Eversource: Crews are prepared for another storm to hit the state and are ready to respond to outages. If you need us at all, please us at 1-800-286-2000. You can also report outages online at Eversource.com

UPDATE: 9:53 AM

Snow now picking up along I-95 from Norwalk to Greenwich.

I-95 remains just wet. Check out the traffic cams here.

Snow now starting to stick to the ground, non-pavement surfaces.

UPDATE: 9:22 AM

And the town with the first power outage goes to ... Wilton.

Eversource says only one customer is affected.

UPDATE: 9:18 AM

Still not snowing in Danbury.

Some people are wondering when this nor’aster will ramp up.

NWS says it’s still going to happen.

Hopefully, the heavy snow will hold off until students and teaching staff get home safely after early dismissal.

UPDATE: 8:52 AM

Although light snow is falling in southwestern Connecticut, it’s not sticking on the roads.

The state Department of Transportation is reporting no traffic delays across the state.

UPDATE: 8:34 AM

Winds are starting to increase.

Recent peak wind gusts: 33 mph Sikorsky Memorial Airport, Stratford; 29 mph at Oxford airport and White Plains airport, near Greenwich; 25 at Danbury airport; and 23 mph at Tweed-New Haven Airport in East Haven.

UPDATE: 8:16 AM

Light snow, mixed will sleet falling in Norwalk.

UPDATE: 7:59 AM

Temperatures are now below freezing. It’s 27 in New Milford, 28 in Danbury, 29 in Wilton and 30 in Stamford.

The coldest spot in the state is Norfolk, also known as “The Icebox of Connecticut.”

UPDATE: 7:55 AM

It seems like the calm before the story; wind is picking up with scattered snowflakes in Norwalk.

UPDATE: 7:51 AM

Norwalk Mayor Harry Rilling has declared a snow emergency.

Garbage and recycling pick up will start one hour early on Wednesday March 21th. The Transfer Station and Yard Waste Site will be open on their regular scheduled hours on Wednesday March 21st. Call Customer Service for updates (203) 854-3200.

Please check www.norwalkps.org for school closing information.

The Fire Department is asking residents to ‘adopt a hydrant’. If possible, please clear hydrants closest to your property to help firefighters get quick access during fires. Residents and businesses are reminded to shovel sidewalks as required by City code.

In addition to the City’s website and social media sites, the Code Red system may be used to update residents.

To read more, click here

UPDATE: 7:47 AM

Highlights from the Bridgeport: Snowfall is expected to become heavy at times by late morning, continuing into the evening and creating hazardous driving conditions.

UPDATE: 7:37 AM

The latest snowfall “expected snowfall” map by the NWS’s New York office has bumped up the accumulation to 18 inches.

The 12-18 inch snowfall area is from Greenwich to Clinton to about 20 miles inland.

Danbury is in the 8 to 12 inch range.

The New York City metro area and most of western Long Island is also going to get slammed with the same amount of snow.

UPDATE: 7:22 AM

Here are the highlights from the latest NWS briefing:

What’s changed: Snowfall amounts increased for most of the tri-state.

Twelve to 18 inches possible for southern Connecticut.

Heaviest snow from late morning to midnight.

Snowfall rates 1 to 3 inches an hour.

Forecast uncertainties:

The location and timing of heaviest snow

The temperatures, especially during the day time.

How much mixing with sleet, if any, occurs.

To read the complete briefing, click here

UPDATE: 7:12 AM

Normally at this time of day major roads like I-95, I-84 and the Merritt/Wilbur Cross parkway would be jammed with traffic.

Not this morning.

The only southbound slowdown is near Exit 15 in Norwalk.

Speeds are averaging 45 mph.

UPDATE: 7:03 AM

Greenwich Library announced as of 7 a.m. the main library, Byram Shubert and Cos Cob branches will be Wednesday, 3/21 due to inclement weather.

UPDATE: 6:59 AM

There is a coastal flood advisory in effect from 9 a.m. to 3 p.m. Wednesday.

Around 1 to 2 feet of flooding is expected today, with some roads and low lying property near the waterfront experiencing shallow flooding. Around 2 to 3 feet of flooding is likely tonight.

High tide is around 3 p.m.

For tides times, click here

UPDATE: 6:52 AM

New York State has a tractor-trailer ban on I-84, I-87, I-287 and I-684 starting at 8 a.m. Wednesday.

No similar ban - yet - in Connecticut.

UPDATE: 6:34 AM

From Eversource: With wind gusts of up to 45 mph, this storm has the potential to bring trees and tree limbs down onto power lines, causing damage to the energy system.

Eversource continues to closely monitor the weather forecast. The expected snow can weigh down tree limbs already weakened from previous storms, leaving them susceptible to coming down in high winds and damaging our equipment.

We have hundreds of employees ready to respond and will have crews pre-positioned around the state before the storm hits so we’re there when customers need us to safely and quickly restore power in case of any outages.

Please remember to always stay clear of downed wires and to report them immediately to 9-1-1.

Customers can report an outage online, or by calling 800-286-2000. Those who signed up for two-way texting can send a text to report an outage and receive outage updates as they happen.

If you have a generator, please be sure it is located well away from your home or business and that the transfer switch, installed by a licensed electrician, is working properly.

UPDATE: 6:20 AM

Temperatures remain several degrees above freezing in most areas of western Connecticut.

Readings are 37 at Sikorsky Memorial Airport in Stratford and 36 at Tweed-New Haven in East Haven.

Temperatures, however, are starting to do down.

Oxford airport is reporting 32 degrees and Danbury 34.

UPDATE: 6:12 AM

Radar on windy.com shows the heaviest snow is in northern New Jersey and Pennsylvania. The northern fringe has now crossed into Staten Island.

Check it out here

UPDATE: 6:05 AM

Traffic is very light on all major roads in the state.

State Police report no major accidents.

UPDATE: 5:52 AM

Greenwich is the only southwestern Connecticut school district that is closed today.

All other schools have early dismissals.

Check out the list here.

During the last nor’easter fizzled out, Greenwich was the only school district that was open.

UPDATE: 5:33 AM

The National Weather Service has hourly forecasts that show the times when we can expect the heaviest snow, strongest winds and temperatures.

For the snow, it says the highest chance of snow is from 8 a.m. to 10 p.m. Wednesday.

It also forecasts how much snow will fall for a time-frame.

For example, its snowfall rate shows 3.1 inches falling between 7 a.m. and 2 p.m.; 5.5 inches falling between 2 and 8 p.m.; 3.4 inches between 8 p.m. and 2 a.m.; and .50 of an inch from 2 to 8 a.m. Thursday.

Total projected snowfall: 12.5 inches.

Check out the hourly forecast here

UPDATE: 5:24 AM

Most schools are having early dismissals, not closings.

Among the schools with early dismissals: Ansonia, Bethel, Brookfield, Bridgeport, Easton, Fairfield, Litchfield, Middletown, Monroe, Naugatuck, New Fairfield, New Milford, North Haven, Emmett O’Brien Tech, Orange, Redding, Regional School Districts 8,9, 10 and 12, Shelton, Sherman, Stratford, Torrington, West Haven and Winchester.

To see the list, click here

UPDATE: 5:18 AM

On Wednesday, in order to reduce the possibility of switch trouble, Metro-North is planning to operate a reduced weekday schedule providing 75 percent of normal capacity, with some combined/canceled trains during the peak periods. Conditions are expected to deteriorate during the day, making travel extremely difficult or even impossible.

In the evening, Metro-North plans to further reduce its service to hourly to ensure customer safety during the storm. Metro-North may suspend service should conditions worsen.

The railroad encourages customers to travel only if necessary and urges those customers who are unable to postpone their travel until after the storm to leave as early as possible in the afternoon and leave extra time for travel. Customers should anticipate delays due to the effects of the winter storm throughout Metro-North’s service territory.

For updated train schedules, customers can use the use the Metro-North Train Time App or Metro-North’s interactive schedules page at http://as0.mta.info/mnr/schedules/sched_form.cfm.

UPDATE: 5:12 AM

Just in: All Fairfield public and parochial schools will close early on Wednesday March 21, 2018. The buses will pick up high school students at 11:45 AM.; middle school students at 12:40 PM; Holland Hill Elementary School students at 12:55 PM; and all other elementary school children at 1:40 PM. The PM preschools are cancelled for today. Please refrain from calling the schools.

UPDATE: 5:10 AM

The NWS’s weather discussion says the nor’easter is expected to be near the 40N/70W benchmark, a position thay historically, brings big snowstorms.

UPDATE: 4:59 AM

Radar shows that snow has already moved into southwest Connecticut.

But because the air is not saturated yet, only a few snowflakes are making it to the ground.

This is also the time that school officials will make the big decision: have no school or early dissmals.