Avalanche Forecast
Avalanche Bulletin - Glacier National Park
Always exercise safe backcountry travel techniques. Cornices and big south faces should be given a wide berth!
Avalanche Problem 1: Storm Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
- Use caution in steeper terrain. Avoid unsupported features on the landscape.
Avalanche Problem 2: Persistent Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Suncrusts are buried 20-50 cms on steep solar aspects. This layer has the potential for human triggering, dig down and assess the snowpack before committing to your line.
Travel and Terrain Advice
- Minimize exposure to steep, sun exposed slopes when the solar radiation is strong.
- Carefully evaluate terrain features by digging and testing on adjacent, safe slopes.
Avalanche Summary
One small size one avalanche was reported yesterday beneath the Asulkan hut. In the HWY corridor, we observed one relatively small size 2 avalanche out of steep south facing alpine terrain. Two days ago Crossover avalanche path ran to size 3.5. This cornice triggered slide was an anomaly, but a great reminder to stay vigilant in big terrain.
Snowpack Summary
In sheltered locations there is 20-30cm of settling storm snow, sitting on a right side up snowpack. Isolated crusts on steep solar aspects can also be found under the new snow or buried/unreactive windslabs. Our persistent weak layers(dec 15th and Feb 13th), are buried over 1.5m and currently dormant.
Weather Forecast
Today we'll start the day off with sunny skies and patchy clouds, no precipitation and light winds. The Alpine will reach -8 and the freezing level should rise to 1100m. The sun could pack some punch today, this will be the main weather factor influencing the avalanche hazard. Snow starting tomorrow and we could see up to 20cm by Friday.
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Isolated storm slabs could be found at ridgetop or features exposed to the wind. Solar radiation will trigger loose dry avalanches on steep sunny slopes and cliffs. These "sluffs" could trigger a soft slab or step down to a persistent weak layer.