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Archived

Avalanche Forecast

Jan 3rd, 2020–Jan 4th, 2020
Alpine
4: High
The avalanche danger rating in the alpine will be high
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
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
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

Regions: Kananaskis.

Given the slow, but steady show of natural avalanches lately, we're expecting the deep layers to wake up with the new snow and/or wind loading. Avoid big terrain, especially if it hasn't avalanched yet. 

Confidence

No Rating -

Weather Forecast

Snow starting over night, but a distinct pulse is expected around 8am. Amounts will be 10-15cm by midday. As the initial front passes, temps will fall to -13 or so. The bad news is the wind. High alpine winds will be hauling! 75km/hour winds at peak height are expected. Even valley bottom will have 40-50 km gusts! 

Avalanche Summary

The path immediately below the Tent Ridge radio repeater went sz 2.5 at some point today. It slid on ground and had a 1m+ crown. East aspect and initiated below the ridge line.

Snowpack Summary

10-15 cm has fallen in the last day and a half. The surface hoar that was discussed earlier this week is present in some areas, but not in others. We don't have a good picture of where exactly it is just yet. We think it is up to treeline in elevation, but it may be higher in sheltered areas. So far it isn't a problem due to the lack of a surface slab, but that WILL change if we get more snow on it. Beyond that, the other major change is the new windloading on Easterly aspects. Expect new windslabs from today. And of course, we couldn't have a snowpack discussion without talking about the deep persistent layer. This layer is 110-130 deep, and bridged by the mid pack in many areas, but thin or variable areas remain concerning. 

Terrain and Travel

  • Be aware of the potential for large avalanches due to the presence of a deep persistent slab.