What can the term 'whoomph' indicate when riding on snow?

The term 'whoomph' refers to a significant sound that can occur when a snow slab collapses under weight, which is an indicator of instability in the snowpack that may lead to an avalanche. This sound often signals a critical warning for riders, as it suggests that the snow layer above is not properly bonded to the layers below, increasing the risk of avalanche activity. Recognizing this sound is crucial for snowmobilers to make informed decisions about safety and route choice in avalanche-prone areas. Understanding the implications of 'whoomph' can help riders take proactive steps to mitigate risks while navigating snow-covered terrain.