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Avalanche Forecast

Apr 15th, 2018–Apr 16th, 2018
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: South Rockies.

New snow and wind on Monday will create touchy storm slabs reactive to human triggers; especially in wind effected terrain.

Confidence

Moderate - Forecast snowfall amounts are uncertain

Weather Forecast

MONDAY: Snow, accumulation 10-20 cm. Moderate to strong easterly ridgetop winds. Alpine temperature -2. Freezing level around 1500 m.TUESDAY: Mostly cloudy with sunny breaks. Moderate southwesterly ridgetop winds. Alpine temperature -2. Freezing level around 1500 m.WEDNESDAY: Mix of sun and cloud. Light southwesterly ridgetop winds. Alpine temperature 0. Freezing level rising to around 1800 m.

Avalanche Summary

No new avalanches were reported in this region on Saturday. However, storm slab activity is expected to increase on Monday with the forecast snow and wind.

Snowpack Summary

5-15 cm of new snow and moderate winds have formed fresh storm slabs which are most reactive in wind effected terrain. These storm slabs overlie numerous crusts within the top 100 cm of the snowpack. A well settled mid-pack sits above sugary facets in many parts of the region, especially thin snowpack areas.

Avalanche Problems

Storm Slabs

New snow and wind on Monday will create touchy storm slabs reactive to human triggers.
Use caution when transitioning into wind effected terrain.Watch for signs of instability such as whumphing, cracking, or recent natural avalanching.Use small slopes with low or no consequence to test the bond of the new snow.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely - Very Likely

Expected Size: 1 - 2

Loose Wet

When the sun comes out it will quickly weaken the new snow and cause loose wet avalanching on steep solar slopes.
Minimize exposure to sun exposed slopes when the solar radiation is strong.Watch for signs that the snow is heating up such as pin-wheeling or the surface snow becoming moist.Cornices become weak with daytime heating. Give them a wide berth from above and below.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2