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At a Glance Three men triggered an avalanche near Vail on Saturday, but one escaped.

Crews are searching for the other two men.

Presidents Day weekend is often a bad time for avalanches.

Colorado search and rescue crews were looking for the bodies of two men Sunday after they were buried under a large avalanche.

The two men and one other were riding snowmobiles about 4:45 p.m. Saturday when they triggered the avalanche on Muddy Pass near Vail, Colorado , KCNC-TV reported.

The third man was able to dig out of the snow, according to KCNC.

The Eagle County Sheriff's Office confirmed that there was an active search for the two men.

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Rescuers looked for the men on Saturday, but the danger of another avalanche and approaching darkness forced them to pull back. They returned Sunday.

The area was under moderate to considerable risk for avalanches this weekend, according to the Colorado Avalanche Information Center.

The center said in an Instagram post, "Over the past three days the CAIC has received reports of 20 natural and human triggered avalanches large enough to kill a person. Some of these avalanches were even large enough to snap trees in half."

The weather was clear on Saturday and light snow was falling Sunday, but "even light new snow loads can activate persistent slab avalanches," according to the CAIC.

Avalanche danger was increasing Sunday as a multiday storm moved into the Colorado mountains, the center said.

"Some very large avalanches are propagating in surprising and unpredictable ways as we have been seeing lately. Nothing paints a clearer picture of the danger and the uncertainty we are currently dealing with than some of the very large avalanches that have been observed and reported to CAIC since Friday," the center said in a second Instagram post.

The CAIC said the three-day Presidents Day is a busy time for avalanche accidents because the good weather and nice snow draw many people to the backcountry.

"Over the last 10 winters in Colorado, six avalanche accidents killed people around President’s Day weekend," according to the center.

Two people have been killed in avalanches this season, CAIC said, one a climber in Uncompahgre Gorge, south of Ouray, and the other a backcountry skier in Diamond Peaks, west of Cameron Pass.

Eight people were killed by avalanches in the 2018-2019 season.