“We have a block of harder snow over a section of weak sugary facets of the ground, so we have something over nothing," said Dave Zinn, avalanche expert. "This is the recipe for an avalanche, all you need now is a steep slope and a trigger.”
“Really watch out for those signs of instability -- like shooting cracks. Do some avalanche testing - dig stability tests, do an extended column test, see if you get stable results," said Zinn. "And if you don't see (stable results), find a different slope."