Loose Dry and Storm Slabs at Soda Peak

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Recent avalanche activity

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Friday, Mar 23, 2018 8:07 PM
Pro Ob
Broken Top Area (44.032831, -121.703796)
Ob Date/Time:
Fri, Mar 23, 2018 - 7:42 PM
Report Type:
Snow Conditions
Mode of Travel:
Ski or Snowboard

Written Report:
It was snowing hard today as I toured at Todd Ridge and Soda Peak! By the time I left around 1 pm there was 25 - 30 cm. of snow above Wednesday's crust. There seemed to be a pronounced weakness low in this new storm snow, but several centimeters above the crust. For the most part this weakness manifested in Loose Dry avalanches that ran a bit farther than I'd expect, but on steeper, convex test slopes I could trigger shallow Storm Slabs (see picture). With snow continuing this afternoon and into tonight these could be more destructive tomorrow.

It was snowing 2-3 cm. per hour all morning. The wind was calm at Todd Ridge until just after noon when it seemed to pick up a bit from the South-West. With the increase in wind speed I saw Light blowing snow right at the ridge top as I was skiing out. There was also evidence of light previously blowing snow (maybe Thursday night?).

Todd Ridge @ 11:05, 6740 ft. ENE
Overcast, Snowing S2
Temperature -6 C
Wind was Calm, Blowing Snow NONE and previously light
Height of Snow 275 cm. Boot Penetration 50 cm. New Snow 30 cm.
Shovel Tilt Test failed 28 cm. down in the storm snow
2 Compression tests: CTE BRK down 28 cm. x 2
CTM and then H RP down 35 cm. beneath the crust in 4F disintegrating fragments


Caption: test slope