There's already been one person killed on a snowmobile here in CO, can't remember the details (article linked to in this page: http://avalanche.state.co.us/acc/acc_report.php?accfm=rep&acc_id=434 had a few details), but it's still early.
Several deaths so far in the state, one was by a slide of only 60 ft if I recall correctly. Its a shame more people don't check the forecasts, quite a few people could still be alive if they would simply listen to the warnings and avoid avalanche terrain when necessary.