Observation: UFO Bowls

Observation Date
1/16/2022
Observer Name
Champion/Antenucci
Region
Provo » Provo Canyon » North Fork Provo R. » UFO Bowls
Location Name or Route
UFO Bowls
Weather
Sky
Clear
Wind Direction
Southwest
Wind Speed
Calm
Weather Comments
Beautiful bluebird day. Started as an inversion this morning, with cool trailhead temps and very warm temperatures up high.
Red Flags
Red Flags
Wind Loading
Rapid Warming
Comments
Today we walked up towards the UFO Bowls, it was a warm sunny day with no wind. At lower, south-facing aspects the snowpack is still thin with exposed shrubs and rocks. From Bob's knob across the ridge up to the highpoint of UFO Bowl one, the snow surface was variable, firm and challenging to skin up. The surface was primarily sun-affected with a thick crust, with sections that showed heavy signs of wind effect. As we wrapped further onto the south side of the ridge at higher elevations the sun crust deteriorated and the snow became heavy and moist. We got eyes on UFO Bowl one, which had slid during the last avalanche cycle. At this point, it is completely filled in with wind drifted snow. At upper elevations we were interested in the variability of the height of snow, we found an average spread from 70cm in sun-exposed areas to 220cm in wind drifted areas.
From our highpoint, we could see several crowns of avalanches across on the North East side of Timpanogos, some of which seemed to have occurred more recently than others (See photos). Below most of the recent crowns, there was very little obvious debris still visible, and most of the slide paths were beginning to fill back in with wind drifted snow.
We chose to descend down the south-facing side of UFO Bowl one, which held soft snow down until the pitch constricted through a narrow opening in a rock band. The lower elevations in Primrose didn't see much sun throughout the day and the snow was generally old hard-packed snow and avalanche debris from earlier in the season that was more challenging to move through.
While it was a great sign that many areas we probed did hold a snowpack depth more than 2 meters deep and the overall avalanche danger felt LOW - there were still rocky thin areas and old slide paths that held a shallower snowpack depth. The repeater slopes and steep, shallow, rocky terrain are the two areas that I would continue to give extra caution as you might be able to find that one area that you trigger a small wind drift that steps down more deeply or find the shallow point that triggers something within the old faceted snow.
Video
Today's Observed Danger Rating
Low
Tomorrows Estimated Danger Rating
Low
Coordinates