Observation type
Snowpack Observer Allen Giernet Keep me anonymous if published no Location (general area) Kratka Ridge area Date (yyyymmdd) 20130317 Time noon Road conditions to area clear and dry Temperature 10°c Sky few clouds (up to 2/8) Wind speed Calm (smoke rises vertically) Wind direction not observed Slope aspect North West Aspect in degrees 320° Slope angle 35° Elevation 7300' Snow depth 63cm Boot/ Ski penetration 3 - 5cm Precipitation None Activity, recent avalanches No Whumphing noises, shooting cracks. collapsing no Rapid warming yes Obvious avalanche path no Terrain trap no Comment Snow pack appears to have somewhat refroze last night. Conditions were variable from corn to fairly firm with icy crust in tree sheltered areas. Snow pack profile (this was below a tree sheltered area on a slope that does not see much direct sun) Temp. Gradient surface loose corn ⇓ to 55cm 4F 1mm-.5mm rounds (wet) 53cm 1°c 55 ⇓ 48cm 1F .5mm rounds (wet) 43cm .5°c 48 ⇓ 35cm F 1mm rounds (wet) 33cm 0°c 35 ⇓ 25cm 4F 1.5mm rounding facets (wet) 23cm -.5°c 25 ⇓ hard ice to ground with refrozen chunks 13cm -.5°c of facets at the base about 1 to 2 cm Gnd 0°c High water content all layers 2 tests CTV Q2 16cm⇓ both blocks failed on isolation. They appeared to fail on the interface at 48cm between the 1F and Fist layer, area was very loose with a high water content so I suspect it was well lubricated and had very little adhesion. there seemed to be no propagation but later in the afternoon as things continued to warm there's a good chance this interface would have produced wet slides. Late morning things were loose enough to get some good turns in. Get it earlier than later. there was enough snow depth that with selective turns I never hit anything and the pack was still fairly firm. Leaving around 1:30 the lower was softening into mashed potatoes. Watch for wet slides. Publish this observation Yes I would like this observation Published |
looking down from near ridge east of lift
looking up from base parking
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