Parts of the Niagara Falls have frozen, with a winter storm that blanketed the US Midwest now moving across northeast states and southern Canada.
The US Weather Service issued winter storm warnings or advisories for a swath of the eastern US, an area home to 100 million people, according to meteorologist Rich Otto of the US Weather Prediction Center.
The storm system, which was moving from west to east and was strengthened by arctic air from Canada, hit many parts of the Midwest on Friday, according to the National Weather Service.
