Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Apr 7th, 2024–Apr 8th, 2024

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

Regions

Purcells, Esplanade, Dogtooth, East Purcell, West Purcell.

The most likely places to trigger a lingering wind slab will be in steep, high-consequence terrain. Don't let your guard down and assess often.

Confidence

High

Avalanche Summary

A few size 1 wind slabs and wet loose avalanche activity were reported on Saturday. Read about them in this MIN

Several small explosive-triggered wind slabs and size 1 to 1.5 wet loose from steep solars on Friday.

Snowpack Summary

Recent accumulated snow is settling on north-facing slopes and is moist on steep south-facing slopes, which overlies a crust on all aspects and elevations that is more robust on solar-facing slopes.

A widespread crust with facets above is down 60 to 110 cm. This layer is unlikely to human trigger in areas where a thick crust above the weak layer is present.

Weather Summary

Sunday Night

Mainly cloudy with isolated flurries, 1 cm. 10 to 15 km/h southwest ridgetop wind. Treeline temperature -7°C.

Monday

Mainly cloudy. 10 to 15 km/h southwest winds. Treeline temperatures -7°C.

Tuesday

Cloudy, flurries 5 to 12 cm, 10 to 20 km/h southwest wind. Treeline temperatures -4°C, Freezing levels 1500 m.

Wednesday

Clear. 10 to 15 km/h southwest wind. Treeline temperature -3°C. Freezing level 1800 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Carefully evaluate steep lines for wind slabs.
  • Wind slabs may be poorly bonded to the underlying crust.

Problems

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.