A powerful nor'easter began impacting the East Coast on Sunday, resulting in New Jersey declaring a state of emergency. This decision comes in anticipation of coastal flooding, strong winds, and disruptions to air travel.

According to meteorologist Bob Oravec from the National Weather Service in College Park, Maryland, the worst effects are expected along northeastern North Carolina through much of New Jersey.

Heavy rainfall is also forecast for parts of southeast New England and the New York City area, while some coastal regions in South Carolina have already felt the storm's impacts.

The state of emergency in New Jersey commenced on Saturday night and is expected to continue into Monday. This measure enables emergency services to mobilize swiftly if necessary.

There are forecasts of moderate to significant coastal flooding, with potential inland flash flooding, wind gusts up to 60 mph, and as much as 5 inches of rain leading to hazardous surf conditions. Volunteers in some areas have begun placing sandbags in vulnerable locations.

In New York City, a coastal flood warning and wind advisory remain in effect. Suburban Long Island is particularly at risk, expecting up to 3 inches of rain paired with strong winds.

Flight delays and cancellations have been reported at various airports from Washington, D.C., to Boston due to the adverse weather. The storm is anticipated to move away by Monday night.