Lawinenlagebericht

Lizard-Flathead

Mar 4 – 5, 2025Avalanche Canada
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Lawinengefahr

Thu
Fri
Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
1 · Gering

Kernpunkte

Recent avalanche activity indicates the persistent weak layer remains triggerable.

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

Lawinenprobleme

  • Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1.5–3

    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.

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.

Abgedeckte Regionen