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Avalanche Forecast

Archived

Jan 23rd, 2024–Jan 24th, 2024

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

Regions

Lizard-Flathead, Akamina, Flathead, Lizard.

Recently formed storm slabs may not be bonding to underlying surfaces.

Confidence

Moderate

Avalanche Summary

Numerous natural and explosive-triggered avalanches have been reported over the last couple of days. These avalanches occurred on various aspects and elevations, size 1 to 2.5. Avalanche depths have been roughly 20 to 30 cm.

Snowpack Summary

The upper snowpack continues to settle and bond. Moist surface snow may exist below treeline.

Roughly 30 to 40 cm of recent snow has buried a layer of old wind-affected surfaces and weak faceted grains.

The mid and lower snowpack is generally well-bonded and strong.

Weather Summary

Tuesday Night

Cloudy with trace snow amounts, southwest alpine winds 20 to 40 km/h, treeline temperature -4 °C.

Wednesday

Cloudy with trace snow amounts, southwest alpine winds 20 to 40 km/h, treeline temperature -5 °C.

Thursday

Cloudy with 2 to 5 cm of snow, southwest alpine winds 20 to 40 km/h, treeline temperature -5 °C.

Friday

Cloudy with trace snow amounts, southwest alpine winds 20 to 40 km/h, treeline temperature -6 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Be carefull around freshly wind loaded features.
  • Closely monitor how the new snow is bonding to the old surface.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.