Quick report
About 2 feet of snow fell over the last few days up in the Banner Summit area. We didn't encounter reactive Wind or Storm Slabs. The weather was cooler than expected, and Wet Loose never turned on during our time in the field.
Saw a few avalanches on the north side of Copper. Looked like natural Wind Slabs. Hard to tell when they ran, but assuming they ran around 3/31 during the first pulse of moisture.Weather
- Cloud Cover
- broken
Skies started as overcast this morning, and gradually cleared through the day. Wind was light from the W-NW. The air temperature felt warm out of the wind.
Snowpack
Storm Slab:
2' of new snow sits atop crusts that formed in March. Slabs felt well-connected to crusts below. The slab begins as Fist hard at the surface and stiffens to 4F hard above the crust. On solars, slightly shallower slabs exist where it's more rapidly consolidating. We didn't observe any evidence that this was an issue, but it was at the front of our minds while traveling. This was most concerning on slopes that were taking direct sun, with stiffer surface slabs.
Wind Slabs:
Very minimal wind-affected surfaces observed. Did not encounter a true wind slab problem in our travels today.
Wet Loose:
Today's broken skies and subtle wind kept Wet Loose from turning on. Surfaces moistened on all W-S-SE slopes and lower-elevation NW-N by the end of the day.
Avalanche
- Size
- D2.5
- Count
- 5
- Aspect
- N
- Trigger
- N
- Elevation
- 9600 ft
Avalanches were observed from Hwy 75 on the drive back to Ketchum. These avalanches appeared to be Storm Slabs and most likely failed during or just after the storm ended. East to North between 9000-9500'.