Weather

Sherwin Ridge - Wind slabs and soft snow

Steve MaceEastside Region
View on map
Observation photo 1Observation photo 2Observation photo 3Observation photo 4Observation photo 5

Quick report

Cracking
specific

I went for a walk up to the Pirch in the Sherwins today to get an idea of recent snow totals and to see how sensitive recent wind deposits were.

  • Recent snow totals averaged about 10" in sheltered areas. Far less remains on the moraine or near the parking at the propane tanks. This new snow saw a decent amount of settlement throughout my tour today. Very light and unconsolidated along my ascent this morning, becoming more "hero pow" by this afternoon.
  • I triggered one small Dry, loose sluff on a steep rollover below the treeline and observed several others. A couple of small natural sluffs ran on a steep slope near treeline, and what appeared to be a skier-triggered D1.5 that ran most of the way in the Bardini chute this morning. 
  • Moderate upslope winds dropped out pretty quickly this morning, and mostly light winds prevailed throughout most of my tour. No blowing snow was observed past 10 am.
  • I did, however, observe evidence of yesterday's wind transport.
  • Recent wind slabs were reactive to my weight in leeward catchment zones above 9,000' 
    • Slabs were observed to be reactive, moving towards stuborn
    • Slabs were 1F in hardness and ranged from 10-35 cm.
Recent wind deposits were reactive to my weight on small test slopes near treeline. Slabs were 1f hard and up to 35 cm thick. I triggered one small loose dry sluff on a steep rollover below treeline at approximately 10 am, and I observed a few other natural sluffs off of steep near treeline terrain that likely failed sometime in the last 24 hours. I also observed what looked like a small wind slab near the hose that I suspect was intentionally triggered, but I can not say for sure.

Weather

Air Temp
26
Cloud Cover
clear
Wind Loading
previous
Recent Snowfall
25
Snow Avail For Transport
large amounts

Clear skies and mostly light winds made for a beautiful day in the hills. Temperatures remained below freezing today, but the strong March sun kept it from feeling super chilly after mid-morning. Winds were strong this morning but dropped off significantly by mid-morning. for the bulk of my tour winds were light out of the NW with the occasional moderate gust.