Observation: Cutler Ridge

Observation Date
12/26/2020
Observer Name
Denver and Ben
Region
Ogden » Ben Lomond » Cutler Ridge
Location Name or Route
Cutler Ridge
Red Flags
Red Flags
Wind Loading
Collapsing
Poor Snowpack Structure
Avalanche Problem #1
Problem
Persistent Weak Layer
Trend
Increasing Danger
Problem #1 Comments
The bottom 12" of the snowpack is still faceted and weak, most notably in mid to higher elevations in northerly and easterly aspects. In some of the protected areas, there was notable collapsing/whumpfing in the east to north eastern aspects. Unfortunately, this still presents a significant potential for dangerous avalanches. Seems like a good idea at this time to avoid anything steeper than 30 degrees as was recommended in today's forcast.
Avalanche Problem #2
Trend
Increasing Danger
Problem #2 Comments
While there is soft new snow in protected areas and mid elevations, up higher (above 7,800ft) stiff wind slabs have formed and are continuing to form on the leeward slopes. Today while out they were hollow sounding and firm with active cracking and collapsing noted. The risk of wind slab will likely be increasing with strong gusts of wind throughout today along with new, fresh snow for transport.
Comments
Today started out wet and warm, by the end of the day, we could definitely feel the cold front coming in. There was notable cracking and whumpfing in the skin track along with evidence of wind transport. Hasty hand pits along the ski trail exposed the buried facets in many locations as well as some firmer layers that were more variable due to wind/sun exposure. We dug a pit on a north aspect at 7,800 ft of elevation with a total snow depth of 90cm. There were multiple layers of concern sandwiched between crusts as seen in the attached photo. A CT test resulted in CT 2 that popped into the pit when it failed on the the near surface facets that formed after Thanksgiving. Surprisingly on the ECT, while we did get collapsing, there wasn't propagation as we had expected the with amount of energy witnessed when the CT failed. I suspect this is because the one finger slab on top was too stiff. See photos below.
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable