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Avalanche Forecast

Archived

Apr 17th, 2024–Apr 18th, 2024

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Coquihalla, Manning, Skagit.

Wet loose avalanches are possible on steep sun-exposed slopes. Give cornices a wide berth from above and below.

Where a thick surface crust exists avalanche activity will be unlikely.

Confidence

Moderate

Avalanche Summary

No recent avalanche reports by 4 pm on Wednesday. Sunshine and rising temperatures may weaken the surface snow and initiate small wet loose avalanches on southerly-facing slopes. Use caution on north-facing slopes in the alpine as they may host pockets of wind slab.

If you head into the backcountry, please submit any observations or photos to the Mountain Information Network.

Snowpack Summary

Up to 20 cm of new snow overlies the old snow surfaces, but may only exist on high north slopes after Wednesday's sunshine. The new snow sits above a widespread crust at all elevations besides the high north-facing slopes where small pockets of wind-affected dry snow exist.

Watch for moist, unstable snow on southerly slopes with sun and warm temperatures.

Below treeline elevations have minimal snow cover. Expect challenging travel conditions with hazards like rocks, stumps and open creeks.

Weather Summary

Wednesday Night

Clear. 10-25 km/h north ridgetop wind. Treeline temperatures near -1°C. Freezing level 1100 m.

Thursday

Sunny. 30-40 km/h northerly ridgetop wind. Treeline temperature +2°C. Freezing level near 1600 m.

Friday

Sunny. 20-30 km/h southeast ridgetop wind. Treeline temperature +5°C. Freezing level near 1900 m.

Saturday

Cloudy with rain 5 to 15 mm. 20-35 km/h southeast ridgetop wind. Treeline temperature +7°C. Freezing level 2200 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid sun exposed slopes when the solar radiation is strong, especially if snow is moist or wet
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Watch for wind-loaded pockets especially around ridgecrest and in extreme terrain.

Problems

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.