Dogalanche 

When a group of two or more excited dogs race down a path/stairway/hallway/whatever.

Pronounced Dog-a-lanche

When the dogs get really excited, and want in, it is always dramatic when we open the door, as that always triggers a dogalanche.

Dogalanche by Puffie40 October 8, 2005

datalanche

An overwhelming display of information and data with limited insightful analysis. A presentation with excessive amounts of pure data that is not accompanied with straightforward conclusions and has not undergone rigorous processing.

General McChrystal's Powerpoint presentation was a datalanche. For an hour he showed us numbers and charts, but in the end there was no meaningful message or purpose.

datalanche by frankshoe May 26, 2010

fogalanche 

A large mass of condensation appearing to flow like an avalanche down a hillside.

When I looked up the mountain I thought I was a dead man, but it turned out it was only a fogalanche.

fogalanche by SWilsonMc May 2, 2008