Archived

Avalanche Forecast

Mar 6th, 2019–Mar 7th, 2019

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

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

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: Glacier.

Wind slabs are still problematic in isolated terrain features. No natural loose dry avalanches are expected today with the lack of sunshine; however, always pay attention to your sluff in steep confined terrain.

Weather Forecast

Mainly cloudy with 30% chance of flurries today, fl will rise to 900m, and the wind will be light from the East. Tonight a low-pressure system moves North from the US border towards Rogers Pass; unfortunately, we are only forecasted to receive 5cm tonight, and only a few more tomorrow. The unsettled weather may linger through Friday.

Snowpack Summary

Expect a variety of surface conditions from surface facets to wind slabs, and sun crusts . Sun crusts will be found on steeper solar terrain making for difficult travel. Moderate to strong winds have deposited thin wind slabs on exposed terrain features at ridge-top and exposed treeline areas. The mid and lower snowpack is well settled and strong.

Avalanche Summary

No new avalanche activity was observed in the highway corridor over the past few days, nor have there been any new avalanche reports from the backcountry. Several loose, dry point releases from steep solar aspects were noted recently, generally failing in the surface facets.

Confidence

Avalanche Problems

Wind Slabs

Previous strong winds and cold temperatures have formed wind slabs. These generally "small" reactive wind slabs can still be found in isolated areas. The slabs may be overlying old dormant wind slabs, and or weak faceted snow.

Use caution above cliffs where small avalanches may have severe consequences.Watch for whumpfing, hollow sounds, and shooting cracks.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2