Photos

From obs 3/11/23: "Saw a deep crown today in Republic Valley. This is peak 10383 (just north east of republic peak). Crown looks about 100 feet wide and probably 5 feet deep. Couldn’t see debris or how far it ran." Photo: J. Mundt

On the afternoon of 3/11/23 there was a large avalanche in the main gully on Town Hill (southerly aspect) above Cooke. Photo: GNFAC

Several avalanches observed D2-D2.5.
Crown depth 80-120cm
SSW @ 8800’

Photo: B. Hoiness

Several avalanches observed D2-D2.5.
Crown depth 80-120cm
E @ 9700’
Photo: B. Hoiness

Several avalanches observed D2-D2.5.
Crown depth 80-120cm
ENE @ 10,000’
Photo: B. Hoiness

Observed 3/11/23: E aspect, around 9,000'. Photo: B. Fredlund

Seen 3/11/23, NW aspect, around 10,000'. (This starting zone also avalanched in a similar way around Feb. 21). Photo: B. Fredlund

From IG message: "3 different slides lionhead area. One was very big the run out was 20 feet tall and quarter mile long" Photo: T. Urell

From IG message: "3 different slides lionhead area. One was very big the run out was 20 feet tall and quarter mile long" Photo: T. Urell

From IG message 3/11/23: "...yesterday, at Fairy Lake, very windy and this slid naturally sometime between when we got to the area at noon and 3oclock. There was also a smaller natural wind slab in the northern bowl with arrowhead. Observed wind loading all day." Photo: P. Norvell

We skied the ridge north of Blackmore (Tomahawk Ridge?) traveling between 6800' -9200' on SE-NE aspects.

On the ridge above, ~9400' on a NE aspect there was a natural avalanche, maybe cornice failure, probably same timeframe as the Divide slides. ran ~600'.

HS-N-D2-R2-O

Photo: R. Griffiths

Photo attached of a recent avalanche near Cooke, on the north face of Mt. Republic.  Steep, rocky, north facing.  Everything that I have been seeing the last 2 days has been similar:  steep, rocky north faces above tree line, often associated with wind loading, and cornices.  We observed 4 other similar avalanches yesterday, like the photo attached.

Across the road from Bacon Rind at 7,070' on a west facing slope I saw a small skier triggered slide that ran into the Gallatin River. 

I went for a walk up to divide basin today and noticed two slides that occurred on high, steep, north facing slopes last night (Tuesday night) when the wind picked up 

We saw 6 natural avalanches on our ride in Lionhead. They all involved snow in the last week or two. On our exit we ran into who a group that witnessed a sledder triggering this slope. It was about 3 feet deep and was clearly wind loaded. Luckily he was not caught. When folks are triggering slides we know other slopes are also unstable. Be careful out there!

We saw 6 natural avalanches on our ride in Lionhead. They all involved snow in the last week or two. On our exit we ran into who a group that witnessed a sledder triggering this slope. It was about 3 feet deep and was clearly wind loaded. Luckily he was not caught. When folks are triggering slides we know other slopes are also unstable. Be careful out there!

We saw 6 natural avalanches on our ride in Lionhead. They all involved snow in the last week or two. On our exit we ran into who a group that witnessed a sledder triggering this slope. It was about 3 feet deep and was clearly wind loaded. Luckily he was not caught. When folks are triggering slides we know other slopes are also unstable. Be careful out there!

We saw 6 natural avalanches on our ride in Lionhead. They all involved snow in the last week or two. On our exit we ran into who a group that witnessed a sledder triggering this slope. It was about 3 feet deep and was clearly wind loaded. Luckily he was not caught. When folks are triggering slides we know other slopes are also unstable. Be careful out there!

We saw 6 natural avalanches on our ride in Lionhead. They all involved snow in the last week or two. On our exit we ran into who a group that witnessed a sledder triggering this slope. It was about 3 feet deep and was clearly wind loaded. Luckily he was not caught. When folks are triggering slides we know other slopes are also unstable. Be careful out there!

While investigating an avalanche that failed on a weak layer of facets buried in January, we notice a new layer that we will be looking for and testing as we move forward. Photo: GNFAC