Photos

Displaying page 16 of photos 301 - 320 of 497
Cooke City, 2019-01-13

A snowmobiler triggered this avalanche on Friday afternoon (1/11) on Mt. Abundance north of Cooke City. It broke into old snow, and is on a south aspect at 10,000'.

Link to Avalanche Details
Cooke City, 2019-01-13

A snowmobiler triggered this avalanche on Friday afternoon (1/11) on Mt. Abundance north of Cooke City. It broke into old snow, and is on a south aspect at 10,000'.

Link to Avalanche Details
Cooke City, 2019-01-13

A snowmobiler triggered this avalanche on Friday afternoon (1/11) on Mt. Abundance north of Cooke City. It broke into old snow, and is on a south aspect at 10,000'.

Link to Avalanche Details
Cooke City, 2019-01-13

A snowmobiler triggered this avalanche on Friday afternoon (1/11) on Mt. Abundance north of Cooke City. It broke into old snow, and is on a south aspect at 10,000'.

Link to Avalanche Details
Northern Gallatin, 2019-01-12

This graph shows snow water equivalent (SWE) by date at the primary SNOTEL sites that we use in the GNFAC region. From October 1st, 2018 to January 12th, 2019. Steeper lines indicate bigger storms and flatter lines indicate periods of little to no snow. A large storm at the beginning of Novermber laid down a 1-3 foot base. Relatively dry and cold weather through November caused much of that snow to become weak. This weak snow was buried by a series of storms. Avalanches were seen during and following many of these storms. During dry weather between storms, more weak layers formed on the surface of the snowpack and were subsequently buried. (Graph created by GNFAC from NRCS provisional data).

Lionhead Range, 2019-01-12

One of many avalanches that broke during the last week's avalanche cycle at Lionhead. Natural and snowmobile triggered slides were reported between 1/7 and 1/9/19. On 1/6-1/7 the area got a foot of heavy snow followed by strong winds. This loaded an unstable snowpack that is poorly supported by 1.5' of sugary snow on the ground. Avalanches broke 2-3 feet deep on this weak snow, and propagated relatively wide. Photo: GNFAC

Link to Avalanche Details
Lionhead Range, 2019-01-12

One of many avalanches that broke during the last week's avalanche cycle at Lionhead. Natural and snowmobile triggered slides were reported between 1/7 and 1/9. On 1/6-1/7 the area got a foot of heavy snow followed by strong winds. This loaded an unstable snowpack that is poorly supported by 1.5' of sugary snow on the ground. Avalanches broke 2-3 feet deep on this weak snow, and propagated relatively wide. Photo: GNFAC

Link to Avalanche Details
Lionhead Range, 2019-01-12

A snowmobile triggered avalanche that broke during the last week's avalanche cycle at Lionhead. Multiple (5+) natural and snowmobile triggered slides were reported between 1/7 and 1/9. On 1/6-1/7 the area got a foot of heavy snow followed by strong winds. This loaded an unstable snowpack that is poorly supported by 1.5' of sugary snow on the ground. Avalanches broke 2-3 feet deep on this weak snow, and propagated relatively wide. Photo: GNFAC

Link to Avalanche Details
Lionhead Range, 2019-01-12

A snowmobile triggered avalanche that broke during the last week's avalanche cycle at Lionhead. Multiple (5+) Natural and snowmobile triggered slides were reported between 1/7 and 1/9. On 1/6-1/7 the area got a foot of heavy snow followed by strong winds. This loaded an unstable snowpack that is poorly supported by 1.5' of sugary snow on the ground. Avalanches broke 2-3 feet deep on this weak snow, and propagated relatively wide. Photo: GNFAC

Link to Avalanche Details
Lionhead Range, 2019-01-12

A snowmobile triggered avalanche that broke during the last week's avalanche cycle at Lionhead. Multiple (5+) Natural and snowmobile triggered slides were reported between 1/7 and 1/9. On 1/6-1/7 the area got a foot of heavy snow followed by strong winds. This loaded an unstable snowpack that is poorly supported by 1.5' of sugary snow on the ground. Avalanches broke 2-3 feet deep on this weak snow, and propagated relatively wide. Photo: GNFAC

Link to Avalanche Details
Bridger Range, 2019-01-11

Skiers found a variable snowpack near Frazier Basin in the northern Bridgers. This south-facing slope had a foot of facets near the ground, which was not present on a nearby northern aspect. Photo: Unknown

Northern Gallatin, 2019-01-11

Skiers observed collapsing on Weber Mountain near Lick Creek in Hyalite. They dug a pit and found poor structure with a thin, faceted snowpack and got poor stability test results, with ECTP6 failing on a thick layer of facets. Photo: M. Talty

Southern Madison, 2019-01-10

In Cabin Creek (1/10/19) we found a recently buried layer of surface hoar as well as the weak, sugary snow that makes up the bottom 1.5' of the snowpack in the southern ranges. Avalanches are possible to trigger on the sugary facets near the ground. Both of these weak layers will persist and cause avalanches when we get more snow and wind loading. Photo: GNFAC

, 2019-01-10

February 2, King and Queen of the Ridge at Bridger Bowl (fundraiser). Register with Bridger to hike in the event, and create a pledge page to raise funds with your Ridge laps.

Northern Gallatin, 2019-01-10

Snowmobilers up Portal Creek in the northern Gallatin Range experienced cracking/collapsing and triggered this small avalanche. The slide broke 1' foot deep and nearly 100' wide. Fortunately, nobody was caught. Avalanche activity is the best indicator the snowpack is unstable. Photo: A. Donovan 

Link to Avalanche Details
Southern Madison, 2019-01-10

This small slide failed failed naturally on a wind loaded slope. Although not large, it's bull's eye information avalanches are possible in steep, wind loaded terrain. Photo: A. Wheeler 

Link to Avalanche Details
Southern Madison, 2019-01-10

This recent slab avalanche was observed in the Taylor Fork on Wednesday, Jan. 9th. It appears to have failed naturally on weak facets near the ground. Avalanche activity is the number one sign the snowpack is unstable. Although avalanches are becoming harder to trigger without new snow and wind, recent activity is a clear reminder avalanches remain possible. Photo: A Wheeler 

Link to Avalanche Details
Southern Madison, 2019-01-10

Skiers got this wind loaded slope to collapse and crack from an adjacent slope. A poor snow structure of facets underlying a harder wind slab was the culprit. Photo: D. Zinn

Link to Avalanche Details
Lionhead Range, 2019-01-09

A snowmobiler triggered a slide in Lionhead on Tuesday, January 8. Photo: D. Mintus

Link to Avalanche Details
Cooke City, 2019-01-09

The north face of Crown Butte, outside Cooke City, has been scoured by recent winds. Photo: GNFAC