It's just turned 04.50 (09:50 GMT) on the east coast of America and the country's National Weather Service (NWS) has warned of "severe storm conditions" and "dangerously cold temperatures" in some areas.

The NWS Weather Prediction Service says the major winter storm will move from Ohio Valley to the Mid-Atlantic throughout today. This will bring an additional 6-12 inches of snow, travel delays and dangerously cold temperatures, they say.

In Jacksonville, Florida, the weather service warns of rain and winds with gusts up to 30-40mph possible throughout later this afternoon.

In San Juan, Puerto Rico, the NWS is predicting "hazardous marine and coastal conditions" with a high rip-current risk until tomorrow afternoon. Their advice is to stay out of the waters.

In Charleston, in West Virginia, the weather service says: "We are still being affected by this winter storm and although rates have come down roads are still slick and could cause dangerous travel this morning." They add that freezing rain will continue until this afternoon, when it will turn to snowfall.

In Kansas, one of the worst-hit areas, the snowfall reached 11 inches - the fourth largest on record for a singular day in Kansas City, NWS says. A blizzard warning had been in place, but this was expired late yesterday evening local time.