Wind Slabs yesterday / Warming today

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Friday, Apr 21, 2017 10:35 PM
Pro Ob
Tam Rim Area (44.095854, -121.654358)
Ob Date/Time:
Fri, Apr 21, 2017 - 8:23 PM
Report Type:
Snow Conditions
Mode of Travel:
Ski or Snowboard

Written Report:
I toured at Tam rim this morning. There were 2 prominent R3 D1 Windslab avalanches from the most recent storm on Thursday night. I could see one larger loose avalanche on North Sister near the Thayer Glacier.

We skied on East and North aspects. Any slopes that had received more that a few hours of sun yesterday, had already been through one melt-freeze cycle and were of course headed into another today. More northerly aspects still had preserved soft snow. Lingering pockets of wind slab were on my radar where we skied on North aspects, but the only moving snow we saw was sluffing (somewhere between dry and wet)

By 11:15 it was already 4 degrees C with only very scattered cloud cover. I would anticipate there was a Loose Wet problem on steeper sunnier slopes. The wind was light to moderate during our ski and I didn't see any moving snow, only evidence of previous wind transport also from the southwest.