Lawine

Fishhook Road / Natural Avalanche Cycle

Rogers / PaulHatcher Pass
Auf der Karte ansehen
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Quick report

Today we took another trip up to the road closure at Gold Mint to observe for more recent natural activity. Several paths that had run yesterday off Arkose Ridge appeared to have run again as well as several new natural avalanches from the same aspect. Most notable was a very large recent natural avalanche from the Waterfall path across from Skeetawk that released sometime in the last 24 hours and deposited well over 30' of debris on the Little Su, damming the river and beginning to flood the adjacent campground. 

While in the area we communicated with State Parks, State Troopers, and DOT to help advise on recent natural avalanches and the potential for continued avalanche activity to impact the roadway. At around 13:00 when we made our departure the DOT was communicating with the troopers about moving the road closure to Mile 10. 

More recent large natural avalanches were observed today. Visibility was obscured above the road closure but between milepost 10 and 14 we observed at least 4 new avalanches off Arkose Ridge that released sometime in the last 24 hrs. See attached avalanche observation for full details.

Weather

Air Temp
32
Cloud Cover
obscured
Rain Elevation
1700

Steady rain and snow throughout our short trip up the road today. Rain line was somewhere above the Gold Mint lot when we first arrived around 11:30 but was dropping to the level of the lot or lower, about 1600 ft by the time we departed around 13:00.

Snowpack

Walking around on the snow below Gold Mint lot was punchy and isothermic. With SWE totals over 7'' it's no doubt much of this water has percolated through the snowpack and is draining to the ground. At higher elevations where snow is falling the sheer weight of all this new snow has likely crushed much of the existing snowpack or wiped it away in a natural avalanche cycle. Recent large natural avalanches are easy indications of widespread instability. 

Avalanche

Size
D3 R3
Type
HS
Aspect
W
Trigger
N
Elevation
4000 ft

Several new natural avalanches were observed off the Arkose Ridge. These included Waterfall, Arkose 2 repeating, and paths above the Stairstep Gully.