Very cool technique dubbed “coffee pooling” demonstrated by Utah Avalanche Center’s Drew Hardesty:

“This one is for the real snow geek’s out there!! We were fortunate to have the Utah Avalanche Center’s Drew Hardesty stop by our Level 3 course in Utah this week. Here they pour cold coffee into a south facing slope that has begun to undergo spring like melt-freeze cycles. This is a tool forecasters utilize to help determine, where liquid water may impound, or pool, in the snow pack which can help forecast potential depth and size of wet slab activity.”