Grand Teton National Park

A man was killed in an avalanche in Grand Teton National Park on Monday, authorities said.

Matthew Brien, 33, of Jackson and originally from Pennsylvania, was buried in the avalanche, according to the Teton County Coroner. The slide was reported around 12:30 p.m. 

Park rangers and Teton County Search and Rescue were called to the slide in the Broken Thumb Couloir, off the north side of 25 Short in the park.

Avalanche danger in the area has hovered between high and considerable over the last week. This is the third person to die in an avalanche in this region in one week's time.

The Bridger-Teton Avalanche Center's Monday forecast was grim.

"Avalanche conditions remain dangerous at the mid and upper elevations. Backcountry travelers could easily trigger small to large wind slabs on steep, wind loaded slopes," it stated. "While these slides could kill you, involvement in a persistent deep slab avalanche almost certainly will."

Twenty-Five Short and the Broken Thumb Couloir are in the high-elevation range, where Monday's avalanche danger was considerable.

Additional information about Monday's avalanche wasn't available by press time.

On Thursday, first responders and forecasters urged extreme caution in the backcountry after Michael McKelvey, 31, of Jackson, was killed in an avalanche off Togwotee Pass.

The day before, a Michigan man died in an avalanche off Greys River Road. The 56-year-old was snowmobiling with his son and brothers when he was buried, first responders said. The slide carried eight snowmobiles in its debris.

You're encouraged to check avalanche danger at JHAvalanche.org before going into the backcountry. 

Contact Emily Mieure at 732-7066 or courts@jhnewsandguide.com.

Emily Mieure covers criminal justice and emergency news. She also leads the News&Guide’s investigative efforts. She has reported for WDRB TV in Louisville, Ky., WFIE TV in Evansville, Ind., and WEIU TV in Charleston, Ill.

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