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Archived

Avalanche Forecast

Apr 9th, 2025–Apr 10th, 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
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
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

Regions: Coquihalla, Harrison-Fraser, Manning, Skagit.

Wet avalanches are possible due to high freezing levels and rain.

Confidence

Moderate

Avalanche Summary

While we have no recent observations from this region, we suspect wind slab and wet loose avalanches occurred during recent storms and we can expect more with another storm on Thursday afternoon.

Snowpack Summary

Fluctuating freezing levels are causing rapid settlement and melting of the snowpack. However, up to 30 cm of snow has likely fallen at upper elevations in the past few days, which is likely heavily wind-affected from strong south winds.

Freezing levels will peak near 2500 m on Thursday before dropping as an approaching storm begins as rain and transitions to snow, with the heaviest accumulations expected Thursday evening.

Lower elevations are melting out quickly.

Weather Summary

Wednesday Night

Partly cloudy. 20 km/h south ridgetop wind. Treeline temperature -1 °C. Freezing level 1800 m.

Thursday

Increasing cloud with 5 to 10 mm of precipitation, snow possible above 1600 m. 60 km/h south ridgetop wind. Treeline temperature 3 °C. Freezing level peaking at 2400 m in the morning then dropping to 1600 m.

Friday

Another 10 to 20 cm of snow by the morning then a mix of sun and cloud during the day. 30 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1500 m.

Saturday

Mostly cloudy with 2 to 5 cm of snow. 20 km/h west ridgetop wind. Treeline temperature -5 °C. Freezing level 1200 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • The first few hours of rain will likely be the most dangerous period.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Avalanche Problems

Loose Wet

Wet loose avalanches are possible when the snow surface becomes moist or wet. Manage sluff carefully—wet snow can entrain significant mass.

Aspects: All aspects.

Elevations: Treeline, Below Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 1.5

Wind Slabs

Old wind slabs may linger near ridgelines and new ones may form on Thursday afternoon if freezing levels drop quickly enough.

Aspects: North, North East, East, West, North West.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5