Sri Lanka, Jan. 26 -- A dangerous winter storm has swept across the US, leaving at least three people dead and cutting power to hundreds of thousands of homes.

Schools and roads across the country have been closed and flights have been cancelled as "life threatening" conditions stretched from Texas to New England, according to the National Weather Service (NWS).

At least two people died of hypothermia in Louisiana, with state health officials linking their deaths to the storm, and another death was reported in Texas.

As of Sunday afternoon, about 900,000 households had lost power, according to poweroutage.us. Meanwhile, more than 10,000 flights were cancelled, FlightAware reported.

Widespread heavy snow, sleet and freezing rain, whic...