Silver Lake, Colorado, with an amazing 74 inches or 1.8 metres. The longest glacier In The Australian section of Antarctica. The Lambert Glacier is up to 40 miles wide, and over 250 miles long. Typically traveling at up to 50 mph an hour, in the right conditions these can reach much higher speeds. In Switzerland, an avalanche was once measured at a speed of 217 mph.
Avalanches are dangerous.
And after 20 minutes most people succumb to the cold and suffocation. A postman in Austria survived for three days. An avalanche made up of ice fell over 10,000 feet from a mountain in the Andes in Peru, and in the space of 15 minutes killed an estimated 3,500 people and 10,000 livestock. A hailstone measuring 8 inches in diameter and weighing 1.67 pounds, was found in Coffeyville, Kansas on 3rd September 1970. And in June 1932 a hailstorm killed an estimated 200 people, and injured thousands more.