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Avalanche Forecast

Apr 2nd, 2019–Apr 3rd, 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
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: South Rockies.

Minimize exposure to steep slopes as temperatures warm through the day, especially in areas with fresh snow.

Confidence

Moderate -

Weather Forecast

TUESDAY NIGHT - Cloudy with clear breaks / light southeast wind / alpine low temperature near 0 / freezing level valley bottomWEDNESDAY - Cloudy with isolated flurries, trace to 7 cm accumulation / southwest wind, 25 gusting to 45 km/h / alpine high temperature near 0 / freezing level 2000 m THURSDAY - Cloudy with sunny breaks and isolated flurries, trace accumulation / west wind, 15-40 km/h / alpine high temperature near +1 / freezing level 2000 m FRIDAY - Cloudy with isolated flurries, trace to 10 cm accumulation / light southwest wind, gusting to 55 km/h / alpine high temperature near +1 / freezing level 2100 m

Avalanche Summary

If the sun comes out for prolonged periods of time or as temperatures rise, the chances of loose avalanches will increase, especially in areas with fresh snow.On Monday, small (small 1-1.5) loose-dry and loose-wet avalanches were reported with the accumulated snowfall as well as two small (size 1-1.5) storm slab avalanches triggered with explosives. On Tuesday, snowballing was observed in alpine terrain.

Snowpack Summary

About 5 cm recent snow overlies a thick crust on most aspects and elevations. On north-facing, alpine terrain, up to 20 cm recent snow is bonding well to a cold, dry snowpack. Lower down in the snowpack, the base is composed of weak facets (sugary snow). In areas that remained more sheltered from the heat (like north-alpine), human triggering of persistent slabs on this layer may still be possible; especially in rocky alpine terrain with a shallow or highly variable depth snowpack.The snowpack on sun-exposed slopes in the alpine and all aspects at treeline and below may become moist or wet during the heat of the day, especially if the sun comes out. With spring conditions, the avalanche hazard will fluctuate greatly depending on the strength of the overnight freeze and how quickly the snowpack is warmed up each day.

Avalanche Problems

Loose Wet

Sunshine and air temperatures above 0 C can rapidly increase the likelihood of triggering loose wet avalanches, especially in areas with fresh snow.
Cornices become weak with daytime heating, travel early on exposed slopes.Avoid sun exposed slopes when the solar radiation is strong, especially if the snow is moist or wet.Avoid terrain traps such as cliffs and gullies that increase the consequence of small avalanches.

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

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 1.5