Todd Ridge Storm Conditions

Friday, Mar 24, 2017 8:16 PM
Pro Ob
Three Sisters Area (44.031103, -121.700363)
Ob Date/Time:
Fri, Mar 24, 2017 - 7:51 PM
Report Type:
Snow Conditions
Mode of Travel:
Ski or Snowboard

Written Report:
Just when I thought it was safe to summer wax my fat skis! I should know better. There was about a foot of soft storm snow at Todd Ridge by 1:30 pm today. In terrain above 35 degrees I was able to trigger Loose Dry avalanches that would entrain all of the snow down to the melt-freeze crust from earlier in the week. In the morning, the wind was moderate at ridge-top and I saw light blowing snow from the west with cornices building. In the afternoon the wind was calm or light (keep in mind this terrain is mostly below treeline). The temperature remained below freezing during my tour but just barely! It snowed throughout the entire day, mostly lightly.

The current storm snow overlays a sturdy melt-freeze crust and below that are weaker melt-forms. You can see the results of my shovel tilt and compression tests below. In no instances were there failures around this crust.

Weather observation and snowpack tests:
Todd Ridge, 13:30, 6,850 ft., East
Overcast, Snowing S-1
Temperature -.5 C
Wind was Very Light from the West, I had previously seen blowing snow from the west but it was light and only just at ridge top
Surface form/size: New Snow 1mm, Height of Snow was more than I could measure with a 3.2m probe!, Boot penetration 60 cm. Ski penetration 20 cm.

Shovel Tilt test BREAK down 25 cm
2 Compression tests scored:
CTM BRK down 25 cm. CTH BRK down 50 cm. &
CTE BRK down 25 cm. CTH RP down 50 cm,