You must agree with the following to use Backcountrymap.com:
Travel in avalanche terrain is dangerous,
really dangerous, and we can not be liable for anything that happens
out there to you. While we hope the information we provide is helpful to
you, please keep in mind there are errors and inaccuracies.
These maps are only a rough approximation, and you should consider
many other data sources before you travel in avalanche terrain.
Beyond the many errors in the data it is also only accurate to
approximately 30ft square, and you will need finer measurement
to understand the avalanche risk in the terrain. This is not a
replacement for good avalanche training and field observations.
Bottom line, do not bet your life on this data, it's not good
enough, nothing you read here or on the web can replace good
field observations and avalanche training.
And even with all the information at hand
and the best decision making, there are always risks,
the mountains are inherently unpredictable, and accidents happen.
Be safe out there. Cheers!