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Archived

Avalanche Forecast

Apr 17th, 2025–Apr 18th, 2025
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
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

Regions: Akamina, Crawford, Crowsnest North, Crowsnest South, Elkford East, Elkford West, Flathead, Lizard, Lizard-Flathead, Moyie, South Rockies, St. Mary.

Minimize exposure to cornices, warm temperatures and sun will weaken them

Rising temperatures may trigger wet avalanches on steep south slopes, especially with recent snow near the divide

Confidence

Moderate

Avalanche Summary

Size 1 to 2 wet loose avalanches occurred across the region during the warm, sunny weather on Sunday and Monday.

With rapid warming expected, avalanche activity is likely to increase.

Snowpack Summary

Wednesday’s storm delivered 10 to 20 cm of snow on top of a thick melt-freeze crust in the Rockies. The snowpack is generally well bonded, with no concerning layers, and continues to melt rapidly at lower elevations.

Dry snow exists over crust on high north-facing slopes. South facing slopes and lower elevations will become moist from sun and warm temperatures.

The snowpack is generally well bonded, with no concerning layers, and continues to melt rapidly at lower elevations.

Weather Summary

Thursday Night

Mostly clear skies. 10 to 20 km/h north ridgetop wind. Freezing level drops to 500 m.

Friday

Sunny. 10 to 20 km/h northwest ridgetop wind. Treeline temperature +4 °C. Freezing level 2500 m.

Saturday

Mix of sun and cloud. 20 to 40 km/h southwest ridgetop wind. Treeline temperature +2 °C. Freezing level 2300 m.

Sunday

Cloudy with 10 to 20 cm of snowfall possible. 30 to 40 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 2000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • The more the snowpack warms up and weakens, the more conservative your terrain selection should be.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • A moist or wet snow surface, pinwheeling, and natural avalanches are all indicators of a weakening snowpack.

Avalanche Problems

Loose Wet

Rising temperatures and strong sunshine will increase potential for wet avalanches. Warming will be most intense on steep south facing slopes, especially near rocks.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2

Cornices

Cornice falls are unpredictable will weaken rapidly with warming on Friday. Avoid exposure to large cornices, on ridgelines and on the slopes below.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 2 - 3