From the end of January to Feb. 6, 2021, 15 backcountry skiers, snowboarders and others were killed by avalanches, marking the most deaths in a week since 1910.
Thirty-three people have been killed by avalanches since Oct. 1, 2020, according to the Colorado Avalanche Information Center (CAIC).
The previous record was set in both the 2007-2008 and 2009-2010 seasons.
As city streets were shuttered, also buried under snow and ice, Americans increasingly turned to outdoor backcountry sports and activities amidst the COVID-19 pandemic.
But, as interest grew, so did risk.
And, although experts were on high alert, human error triggers nine out of 10 avalanches -- especially as the number of skiers and snowboarders surge.
The early-season snow in addition to a dry period in the West -- with fires in California lasting through the end of the year -- created a weak layer in the snowpack before even more snowfall was added on top.
While more people usually die in avalanches in Colorado than in any other state, mountain snow is particularly tricky.
However, winter is not over yet and even as avalanche season -- between December and April -- draws to a close, avalanches can occur during any month of the year.
In the next few days, fire weather threats, rain and snow will impact the country.
The National Weather Service reported on Tuesday that a front from the Northern Plains to the Great Basin is expected to move east to the Great Lakes to the Southern High Plains by Thursday, producing snow over Colorado's Rockies.
Thunderstorms are possible over the Plains and Mississippi Valley on Wednesday, which will change to snow as cold air moves southward. Snow will continue in the Midwest on Thursday.
On the West Coast, snow will fall at a high elevation and spread inland by Tuesday night, moving through the Rockies and Plains.
On Wednesday, more snow will fall over the mountains and additional snow and rain will move into the Southwest by late Wednesday.
One to 2 feet are forecast over the Sierra Nevada into Northern California's coastal mountains.