New York has woken up to its heaviest snowfall in nearly four years after a winter storm blanketed parts of the US north-east.

New York City's Central Park recorded 4.3 inches (11 cm) of snow, the highest since January 2022, while other parts of the state experienced up to 7.5 inches of snow, according to the US National Weather Service (NWS).

In response to the storm, Governor Kathy Hochul declared a state of emergency for more than half of the counties in New York.

On Saturday, over 900 flights were cancelled, mostly in New York, while a total of more than 8,000 were delayed nationwide, as reported by tracking site FlightAware.

By early Saturday, snowfall ranged from 6 to 10 inches across areas from Syracuse in central New York to Long Island in the south-east.

The storm prompted also emergency declarations in neighboring New Jersey and Connecticut, which reported significant snowfall, with Fairfield County experiencing up to 9.1 inches.

Although the worst of the storm passed by Saturday morning, temperatures remained below freezing, making road conditions hazardous. The NWS warned that melting snow could create black ice on roads and bridges.

To protect vulnerable populations, the state activated a 'code blue' to bring homeless individuals indoors as temperatures dropped.

Meanwhile, across the country, California grapples with the fallout of severe storms that have led to devastating mudslides and flooding.