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Archived

Avalanche Forecast

Apr 18th, 2022–Apr 19th, 2022
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
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
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
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: Kootenay Boundary.

Snow and wind may form new slabs. Use particular caution if you find 20 cm or more in your riding area.

Confidence

Moderate - Forecast snowfall amounts are uncertain.

Weather Forecast

MONDAY NIGHT: Cloudy with snowfall, accumulation 10 to 20 cm, 20 to 40 km/h south wind, alpine temperature -5 C, freezing level 1500 m.

TUESDAY: Mostly cloudy with snowfall, accumulation 2 to 5 cm, 20 km/h southwest wind, alpine temperature -6 C, freezing level 1500 m.

WEDNESDAY: Mostly clear skies with no precipitation, 10 km/h south wind, alpine temperature -2 C, freezing level 1800 m.

THURSDAY: Cloudy with snowfall, accumulation 5 cm, alpine temperature -2 C, freezing level 1800 m.

Avalanche Summary

We did not receive any reports of avalanche observations in the past few days.

Please consider posting your observations to the Mountain Information Network to supplement our data stream and help fellow recreationists.

Snowpack Summary

Anywhere from 10 to 30 cm of snow is forecast to accumulate Monday night and into Tuesday with associated southwest wind. New wind slabs may form in lee terrain features. The new snow will sit on a widespread melt-freeze crust everywhere except high elevation shaded slopes, where it will fall onto wind affected snow. Below the rain-snow line, rain will wet a consolidated snowpack.

The remainder of the snowpack is strong, consisting of hard snow and various melt-freeze crusts.

Terrain and Travel

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Wind slabs may be poorly bonded to the underlying crust.
  • Watch for fresh storm slabs building throughout the day.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Avalanche Problems

Wind Slabs

Anywhere from 10 to 30 cm of new snow and southwest wind are forecast for Monday night into Tuesday. The snow may form new wind slabs in lee terrain features. Also use caution if you find 15 cm or more in sheltered terrain, as storm slabs could form. The snow may slide easily, particularly where it accumulates onto a hard melt-freeze crust.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2