Avalanche Forecast
Issued: Mar 5th, 2018 4:47PM
The alpine rating is Wind Slabs and Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Moderate - Timing or intensity of solar radiation is uncertain
Weather Forecast
TUESDAY: Mix of sun, cloud and isolated flurries / Light to moderate west wind / Alpine temperature -13WEDNESDAY: Mix of sun, cloud and isolated flurries / Light southwest wind / Alpine temperature -12 THURSDAY: Mix of sun and cloud / Light to moderate southwest wind / Alpine temperature -9 Â
Avalanche Summary
There was a report from the western portion of the region of a natural size 3.5 deep persistent avalanche approximately 200cm deep on a west aspect starting in the alpine at 2300m running down to 1400m. This was reported on Saturday and occurred in the previous 24-36 hours.
Snowpack Summary
Recent storm snow is settling and has been redistributed into slabs in wind-exposed terrain. Below this is a layer buried mid-February that presents as a sun crust on solar aspects, and spotty surface hoar on sheltered slopes. This layer looks most concerning on on solar aspects where it's associated with with small facets or surface hoar above.There are several deeper layers in the mid-pack that have shown signs of improving but remain on the radar as a low probability to trigger, yet would produce a high consequence avalanche if triggered. We are talking about surface hoar buried back in December and January. Near the base of the snowpack is a November crust combined with loose sugary snow. These layers may "wake-up" with strong inputs such as sustained warming, sustained snowfall, large triggers (e.g. cornice fall, smaller avalanches coming down from above); human triggering is also possible in shallow snowpack areas with variable snow depth and convoluted terrain.
Problems
Wind Slabs
Aspects: North, North East, East, South East.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Aspects: North, North East, East, South East.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Mar 6th, 2018 2:00PM