A snowstorm, also known as a blizzard or a whiteout, is a severe weather condition characterized by heavy snowfall and strong winds. The term can refer to any snowy weather that causes significant disruptions to transportation, power supplies, and other essential services. Snow storms are typically accompanied by low visibility due to blowing snow, making it difficult for people and animals to move around safely. In extreme cases, heavy accumulation of snow may cause buildings or trees to collapse under the weight.