Image 1 of 8 Of:  Avalanche Observation Copyright:  niclasf Comment:  Think a day and a half old
Image 2 of 8 Of:  Avalanche Observation Copyright:  niclasf Comment:  Crystals from weak layer
Image 3 of 8 Of:  Avalanche Observation Copyright:  niclasf Comment:  One clear crystal, top half, rest might have been in diffrent states of destruction (squished, melted)
Image 4 of 8 Of:  Avalanche Observation Copyright:  niclasf Comment:  Lots of air in the weak layer
Image 5 of 8 Of:  Avalanche Observation Copyright:  niclasf Comment:  Crown as thickest aprox. 50 cm. Was sliding on realy hard windpacked snow, pencil on borderline knife
Image 6 of 8 Of:  Avalanche Observation Copyright:  niclasf Comment:  Lots of cracks when walking around on slab
Image 7 of 8 Of:  Avalanche Observation Copyright:  niclasf Comment:  Buried surface hoar, between 3-10 mm crystals
Image 8 of 8 Of:  Avalanche Observation Copyright:  niclasf Comment:  Surface hoar in weak layer
Avalanche Observation
• 16. May 13:00 • Dry slab avalanche • 2 - Medium • Naturaly released • NE-facing • Avalanche release at 1002 masl and ended at 879 masl • Buried weak layer of surface hoar • 50 cm high and 100 m wide fracture • Lee side • Haven't seen this in report but probably from yesterday, aprox. same time as the other ones. Even though NE aspect you could see on snow surface this was probably loaded alot from side, Westerly winds. Did some investigation of the weak layer by the crown, crown thickness was between 5-50 cm. Slab pencil hard (weak layer fist). Was a bit suprised of the hardness of the slab. Was going to do test but thought it useless, because it would just fall out when isolating (maybe could have tried a PST for fun, but hard to find good spot). It was like it was sittting on air. After looking at crystals first it looked like not very well formed, surface near facets, or even rounded. But when looking a bit away from crown, very carefully I found some buried surface hoar. My guess is that it got squished where I looked first. So guess this might be a bit of a problem for some time, maybe not in to many places but very sporadic, and mainly sides and formation loaded from westerly winds.
Notes
• There are also now plenty of surface hoar at the surface...