Join us at our 2nd Annual Blizzard Ball

Observation: Mount Mellenthin

Observation Date
1/2/2025
Observer Name
Ryan Huels
Region
Moab » Mount Mellenthin
Location Name or Route
Lower NE Mellenthin
Red Flags
Red Flags
Wind Loading
Poor Snowpack Structure
Avalanche Problem #1
Problem
Persistent Weak Layer
Trend
Same
Problem #1 Comments
I dug a pit at 11300' on a NE aspect right at tree line. The snowpack averaged 70-80cm in probing. Two PWL's present in the snowpack on NE facing slopes in my pit, one at 50-55cm and another at 5-20cm. They are separated by a 4F slab. ECTP23 at 20cm.
Avalanche Problem #2
Problem
Wind Drifted Snow
Trend
Decreasing Danger
Problem #2 Comments
Above tree line, winds were blowing moderately out of the W in the morning and light snow was being transported on NW-E aspects. Winds shifted to NE in the afternoon decreased in intensity.
Snow Profile
Aspect
Northeast
Elevation
11,300'
Comments
I toured along the base of the N face of Mellenthin. The new snow in the trees was soft and above treeline slopes were stripped and the snowpack was hard. Windbown drifts have collected on NE aspects and in gullies on N facing terrain. I dug a snowpit at 11300' on a NE aspect right at treeling and got ECTP23 at 20cm on a layer of facts that is loaded with a 30cm 4F slab, a 5cm section of faceted snow and 15cm of condensed, 1F snow from the most recent snow. The snow on NE aspects below tree line was soft and made for excellent skiing. I noted two small, old avalanches on steep NE & E facing terrain in no, to sparsely treed slopes. They either ran during this last storm and have been covered by wind blown snow or during an earlier storm cycle. Both were large enough to knock a skier/rider off their feet and both were located above terrain traps with trees below. Protected NE slopes in the trees and in meadows below tree line had the best and deepest snow. W-NW facing aspects below tree line were slightly wind affected but still soft.
Today's Observed Danger Rating
Moderate
Tomorrows Estimated Danger Rating
Moderate
Snow Pilot URL