The snowboarder was traveling in a backcountry area about 50 miles west of Denver when the avalanche hit about 1 p.m. 9:30 local time (11 ET).
The avalanche ran on an east-facing slope east of Mount Trelease at an altitude of over 12,000 feet, according to the preliminary report from CAIC.
Search and rescue personnel found the victim buried in avalanche debris, according to CAIC.
About 50 miles north, a snowmobile was caught and killed in another avalanche west of Rollins Pass on Mount Epworth on Sunday, CAIC reported.
The avalanche occurred on an east-facing, over the slope of the tree line and buried the snowmobile under his sleigh on Pumphouse Lake.
Colorado has seen six avalanche deaths this month alone, a total of ten this season, more than any other state according to CAIC numbers.
In December, three backcountry skiers were killed in two separate avalanches a day a lot.
Nikki Champion, a prediction at the Utah Avalanche Center, told CNN earlier this month that the deadly season could be the result of two reasons – people enjoying more time outdoors and a “really dangerous snow package.”
This year’s avalanche season has likely been more active due to a “persistently weak layer” of snow, she said.
CNN’s Keith Allen contributed to this report.
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