A very large natural wet slab ran on the afternoon of 5/19 at the Yellowstone Club. (Screenshot from the Y.C. Timberline chair webcam)
Avalanche Details: Very large wet avalanche at the YC
Northern Madison, 2020-05-20
Northern Gallatin
From obs: "Here are a few snaps from yesterday (5/2/20), looking into the Absaroka from up on Emigrant. Fair bit of smaller, pockety wet slab activity in steep, rocky terrain near the middle/upper transition. I didn't see anything larger than D2 or any activity in true upper elevation terrain." Photo: B. VandenBos
Avalanche Details: Many wet slides in Absaroka
Out of Advisory Area, 2020-05-05
From obs: "Here are a few snaps from yesterday (5/2/20), looking into the Absaroka from up on Emigrant. Fair bit of smaller, pockety wet slab activity in steep, rocky terrain near the middle/upper transition. I didn't see anything larger than D2 or any activity in true upper elevation terrain." Photo: B. VandenBos
Avalanche Details: Many wet slides in Absaroka
Out of Advisory Area, 2020-05-05
From obs (5/3/20): "N facing gulley, probably similar results from the Pine Creek avalanche posted on 4/29. Avalanche appears to be natural and possibly a couple days old. Ran about 400’ wide in the cone and damned up the creek with massive cement-like debris. There were more similar avalanches on N facing aspects the more I traveled. The skinning was isothermic and sloppy as each step fell through the snowpack to the ground"
Avalanche Details: Many wet slides in Absaroka
Out of Advisory Area, 2020-05-04
Large destructive wet slide in Absarokas
Pine Creek
Out of Advisory Area
Code
WS-N-R4-D3.5
Elevation
9200
Latitude
45.49000
Longitude
-110.49500
Notes
From e-mail (5/1/20): "...the mountains are coming unglued with the 4 nights of no freeze and heavy rain. My party ventured up pine creek to take a look and found this big one that ran either yesterday or last night."
Number caught
0
Number buried
0
Avalanche Type
Wet slab avalanche
Trigger
Natural trigger
R size
4
D size
3.5
Problem Type
Wet Snow
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
From e-mail (5/1/20): "...the mountains are coming unglued with the 4 nights of no freeze and heavy rain. My party ventured up pine creek to take a look and found this big one that ran either yesterday or last night.
Avalanche Details: Large destructive wet slide in Absarokas
Forecast link: GNFAC Avalanche Forecast for Sat May 2, 2020
Out of Advisory Area, 2020-05-01
Forecast link: GNFAC Avalanche Forecast for Sat May 2, 2020
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Natural wet slides in Bridger Range
BRIDGER RANGE
Bridger Range
Code
WL-N-R2-D2
Elevation
7500
Aspect Range
E-S-SW
Latitude
45.85120
Longitude
-110.94800
Notes
Skiers observed large wet loose avalanches at Bridger on 4/22
GNFAC forecaster noted many natural wet slides throughout the Bridger Range. D1-D2 in size on E-S aspects from previous days (4/20-4/22). One slide north of Flathead Pass appeared to gouge to the ground and may have been a narrow wet slab. All others were relatively shallow, but some ran far.
Number caught
0
Number buried
0
Avalanche Type
Wet loose-snow avalanche
Trigger
Natural trigger
R size
2
D size
2
Problem Type
Wet Snow
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year
From obs (4/26/20): "....a wet slide from a n-ne couloir up mission creek near elephant head in the absarokas between 10-11:30 this morning. Snow did not freeze over last night and was heavily saturated early this morning before the sun rose." Photo: @laura_delray
Avalanche Details: Natural wet slide in Absarokas
Forecast link: GNFAC Avalanche Forecast for Mon Apr 27, 2020GNFAC Avalanche Forecast for Sat May 2, 2020
Out of Advisory Area, 2020-04-27
Forecast link: GNFAC Avalanche Forecast for Mon Apr 27, 2020GNFAC Avalanche Forecast for Sat May 2, 2020
All surfaces except the upper North faces were getting wet and sticky. We observed lots of wet loose avalanches actively happening on SE-E facing slopes. We found some cold buffy snow on north-facing slopes, not amazing skiing. There was one small crown on a steep East facing slope that looked to be from the most recent storm but everything else was loose wet. Small wind slabs from the last snow seemed to be glued down today. Photo: S. Jonas