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Archived

Avalanche Forecast

Mar 3rd, 2025–Mar 4th, 2025
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Recent avalanche activity indicates the persistent weak layer remains triggerable.

Be especially cautious on high northerly-facing slopes, and on sunny slopes during warming.

Confidence

Moderate

Avalanche Summary

Sun: Several small skier-triggered and natual wet loose avalanches and one natural size 2 slab occurred.

Sat: Explosives control near Fernie yielded several persistent slabs sized 2 - 2.5 with crowns up to 100 cm deep.

Fri: A natural size 3 was reported in the Little Sand area - likely a persistent slab.

Thu: The field team saw several persistent slabs in Corbin.

Wed: A natural size 3 deep persistent slab was seen in the Lizard Range.

Snowpack Summary

In most areas, the snow surface is crusty or moist/wet up to 1700 m, or right to ridgetop on on sun-affected slopes. Wind-affected but dry snow still remains on high northerly slopes. A weak layer of preserved surface hoar or facets from late January is buried 80 to 130 cm deep. This weak layer was active during the warmup and remains a concern where strong surface crusts haven't formed. The lower snowpack is generally well-settled, however at least one deep persistent slab ran naturally during the warmup.

Weather Summary

Monday Night

Cloudy with 0 to 3 cm of snow. 10 - 25 km/h northeast ridgetop wind, increasing. Freezing level 1500 m falling to valley bottom. Treeline temperature low of -7 °C.

Tuesday

Mostly cloudy. 10 to 15 km/h southwest ridgetop wind. Freezing level 1600 m. Treeline temperature around -3 °C.

Wednesday

Cloudy with 5 to 10 cm of snow. 15 - 25 km/h southwest ridgetop wind. Freezing level 1500 m. Treeline temperature around -5 °C.

Thursday

Sunny. 10 - 20 km/h northeast ridgetop wind. Freezing level 1600 m. Treeline temperature around -2 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.
  • Be aware of the potential for large avalanches due to buried weak layers.
  • Keep in mind that human triggering may persist as natural avalanches taper off.

Avalanche Problems

Persistent Slabs

The persistent weak layer buried 80 to 130 cm deep has produced numerous recent avalanches. It remains a concern in areas where a strong surface crusts is absent.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1.5 - 3