Wintry yesterday, Warm and Sunny today

Friday, Apr 28, 2017 9:23 PM
Pro Ob
Three Sisters Area (44.032090, -121.699677)
Ob Date/Time:
Fri, Apr 28, 2017 - 9:05 PM
Report Type:
Snow Conditions
Mode of Travel:
Snowshoe or Hike

Written Report:
I toured at Todd Ridge this morning. Pretty much all aspects had 2-5 cm. of new snow over supportable crust. It was clear and warm. By 10:00 the surface snow on sunny slopes was beginning to melt. North aspects had preserved cold snow throughout my tour (til about 1:00 pm). I didn't see any avalanche activity in the terrain I skied this morning (I was heading back up the road by (1:30 pm or so), but with temperatures above freezing and the clear skies there was definitely the potential for Loose Wet and Wet Slab avalanches. The surface snow was wet at this point and the crust was becoming less supportive.

I dug a test profile on a North aspect at 6500 ft. I found approx. 40 cm. of new snow and crusts from this week's storms. Beneath that was relatively weak melt forms. Compression test results were moderate, resistant planar on this layer. Shovel tilt test had no result.

Weather obs:
Todd Ridge, 10:40, 6880 ft.
Clear Skies
Air Temperature -.5 C
Wind was Calm with gusts to Light from the North
Surface form/size: Precipitation Particles/1.5mm, Height of new snow: 3 cm., Boot penetration 20 cm. Ski penetration 2 cm.

Todd Summit, 12:15 pm, 6880 ft.
Scattered clouds
Air temp. 3 C