The snowboarder was traveling in a rural area about 50 miles west of Denver when the avalanche struck at about 9:30 a.m. local time (11:00 p.m. ET).
The CAIC preliminary report said the avalanche ran on an eastern slope east of Mount Trelease at an altitude of more than 12,000 feet.
According to CAIC, search and rescue personnel found the victim in an avalanche.
About 50 miles north, a snowmobile was caught and killed in a second avalanche west of Rollins Pass on Mount Epworth on Sunday, CAIC reported.
The avalanche occurred on an east side, above the tree line slope, and buried the snowmobile under its sleigh on Lake Pumphouse.
Colorado has seen six flood cases just this month for a total of ten this season, more than any other state according to the CAIC score.
In December, three skiers were killed in the country every day.
Nikki Champion, a forecaster at the Utah Avalanche Center, told CNN earlier this month that the deadly season could be due to two reasons – people enjoying more time outside and a ‘really dangerous snow pack’.
This year’s avalanche was probably more active due to a ‘persistently weak layer’ of snow, she said.
CNN’s Keith Allen contributed to this report.