| Trigger | Unknown | Remote Trigger | Unknown |
| Avalanche Type | Unknown | Aspect | Unknown |
| Elevation | unknown | Slope Angle | unknown |
| Crown Depth | unknown | Width | unknown |
| Vertical Run | unknown |
Avalanche: Turnagain
Location: Seattle Ridge
Pro 1 moto test day! Manual wx obs in Center Ridge p lot this morning and Full snowpits on Seattle Ridge in the afternoon sun.
Avalanche Details
Lots of avalanche eye candy today in the wake of this natural avalanche cycle. Crowns observed on Sunburst (N), Seattle Ridge gully, Lynx Creek (several), Wolverine, Eddies wall, Zero bowl and probably others as well. All appeared to be relatively shallow and within the storm snow. We did not see anything that looked to step down. All aspects. Elevations were all above ~2,000'.
Cornice failure in Juniors (below the Seattle R. wx station) observed later in the afternoon. Trigger unknown.
Obvious signs of instability
| Recent Avalanches? | Yes |
| Collapsing (Whumphing)? | No |
| Cracking (Shooting cracks)? | No |
Observer Comments
Natural avalanche cycle.
Weather
Sweet, sweet sunshine! Low 20's F at 1,000' this morning. Winds were calm. No precip but some fog moving in and out of the Pass before 1000. 32 F on the ridge this afternoon with calm winds.
Snow surface
Dry snow from 1,000' up to 3,000'. Repeat offender was cross loaded and 'wavy' this morning. Surface hoar growth overnight. 2-3mm at 1,000'. .5-1mm at 3,000'.
Snowpack
Four student 'full pits' at 2900' on Seattle ridge. East aspect, 23 degree slope. HS ~270cm
ECTP14, 24
ECTN22,23
All results were 25-40cm down on a layer of buried surface hoar/ facets (.5-1mm). Note: This appears to be the same layer from my pit yesterday (2022.02.18) as these pits were in the same relative location.
2.3mm surface hoar at 1,000' this morning. Observed smaller SH at ridgetops as well.
D1 Natural in gully below Seattle ridge.
AAS Pro 1 moto students looking at a thin layer of buried surface hoar/ facets ~40cm below the surface. Seattle ridge, 2900', East aspect.
Sluff management in Zero bowl. Shallow storm slab in foreground.
AAS Pro 1 moto test day. Snowpits and sunshine!