NEW YORK (PIX11) — Intense winter weather sweeping across the country made its impact on the New York City area overnight Thursday into Friday, as hundreds of flights were canceled, roads were swamped, and thousands were left without power just days before Christmas.

As of just before 8:50 a.m. Friday, over 500 flights were canceled between the three major metro area airports, and hundreds more were delayed. The hardest hit was LaGuardia Airport, where 358 flights were scrapped altogether, and another 44 were delayed. John F. Kennedy International Airport was the worst for delays, with 114 flights behind schedule, in addition to 101 canceled.

Those hitting the road for their holiday getaways weren’t immune to the fallout, as widespread flooding was reported in the wake of heavy rain. And plunging temperatures in a possible flash freeze on Friday were expected to ice over streets already slick from recent rain, creating potentially dangerous conditions.

The National Weather Service in New York warned that standing water may turn into black ice late Friday afternoon and into the early evening hours.

Earlier in the day, the Henry Hudson Parkway was closed around 9 a.m. in both directions at 232nd Street in the Bronx due to flooding, but it has since reopened. However, drivers should expect residual delays, officials said.

Northbound traffic on the FDR Drive at 111th Street in Manhattan was also delayed due to flooding around 9:50 a.m., according to a tweet from New York City Emergency Management. Traffic delays were also expected on the Major Deegan Expressway at Depot Place in the Bronx due to flooding, the agency tweeted at 5:31 a.m.

New York City Emergency Management warned of tidal flooding at eight coastal ZIP codes in Brooklyn and Queens, advising against coming in contact with the waters: 11224, 11235, 11414, 11691, 11692, 11693, 11694, and 11697.

Staten Island Ferry service was suspended for about an hour during the morning rush, with the city Department of Transportation citing weather conditions and extreme tides. Service has since resumed on a modified schedule with trips every 30 minutes.

Even those New Yorkers staying home for the holidays may have been affected by the storm, as thousands of power outages in and around the city were reported early Friday.

As of 1:30 p.m., Con Edison reported nearly 900 customers without power in Queens, more than 300 on Staten Island and more than 1,700 in the dark across Westchester County.

As of 10:45 a.m., PSEG Long Island crews had restored service to more than 81% (22,390) of the more than 27,500 customers affected, the company said.

As of 9 a.m., 2,750 customers were without power in New Jersey’s Hunterdon County, with another 65 out in Bergen County, according to Jersey Central Power & Light and PSEG New Jersey and Pennsylvania, respectively.