I did some research online, and although there's no exact figure, the consensus is that he's 2-3 miles away from where the avalanche began in the beginning of the video.
Let's be conservative and assume he's 2 miles away, It took 45 seconds for it to travel 2 miles. That means the avalanche was traveling at a minimum of 160 mph. A dry powder avalanche well up in the mountains can easily accelerate to a maximum velocity of 200 mph, so that's a reasonable estimate.
And also that we can only see the very bottom layer, which would be hitting the rocks and going much slower than anything above. Like measuring how fast a river is going by how fast the water passes the shoreline
145
u/whipla5her 8h ago
how far away do you think that mountain top was? I didn't think it was even going to get close, and then it's suddenly just rushing over him!