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Avalanche Forecast

Archived

Mar 29th, 2024–Mar 30th, 2024

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.

Regions

South Coast, North Shore, Sky Pilot, Tetrahedron.

Watch for rapidly changing conditions on sun affected slopes - recent storm snow may slide easily on the crust below.

Confidence

Moderate

Avalanche Summary

Small wet avalanches were produced on Thursday. Looking forward, riders may be able to trigger wind slabs at higher elevations - above the freezing line, and wet avalanches on south facing slopes affected by strong sunshine.

Snowpack Summary

Up to 30 cm of recent (but moist) snowfall can be found sitting over a widespread crust. Reports indicate that the new snow is bonding well with the old snow surface. Wind effect can be found at higher elevations, with deeper deposits on north and east facing slopes.

Strong sunshine on Saturday is expected to create wet surface conditions on all south facing slopes.

Check out this great MIN report.

Weather Summary

Friday Night

Clear skies with no snow or rain. Freezing level remains around 1500 m overnight. 10-20 km/h northeast winds.

Saturday

Sunny with a few afternoon clouds. 10-20 km/h northwest ridgetop wind. Treeline temperature +1 °C. Freezing level steady around 1600 m.

Sunday

Sunny. 30 km/h northwest ridgetop wind, with strong gusts at higher elevations around 60 km/h. Freezing level begins the day at 1600 m and rises to 3000 m by afternoon, bringing treeline temperatures to +12 °C.

Monday

Sunny with 60 km/h northwest winds. Freezing levels remain around 3000 m with treeline temperatures near +12 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
  • A moist or wet snow surface, pinwheeling and natural avalanches are all indicators of a weakening snowpack.
  • Avoid sun exposed slopes when the solar radiation is strong, especially if snow is moist or wet

Problems

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.