Waves slammed into beaches along Argentina’s northern coast, including Santa Clara del Mar, Mar Chiquita Partido and Mar de Cobo. The freak waves, known as a meteotsunami, killed a 29-year-old man and injured 35 others, officials said. Meteotsunamis are generated by meteorological conditions. Air-pressure disturbances, the kind linked to fast-moving weather events like severe thunderstorms and squalls, drive meteotsunamis. The storm generates a wave that pushes toward the shore. The wave can become dangerous as it reaches shallow water because it slows down and increases in height and intensity.

Some models and plenty of social media hype have proposed that a snowstorm is ahead this weekend. We look at what might be fact or fiction.

A dangerous snow squall blasted through the Chicago area Wednesday morning, causing travel troubles across the region. Multiple ground stops were ordered, lasting nearly three hours in total, at O’Hare International Airport as winds were reported over 50 mph in the area. Five flights were also canceled at the airport.

Multiple systems are pushing across the Northern Tier of the country this week, bringing heavy snow to the Great Lakes, Ohio Valley and Northeast.

Fresh snow and warmer temperatures have elevated the risk of avalanches in the western part of the country. Over the weekend, slides killed three snowmobilers in Wyoming and Washington State.