Avalanche Forecast Glacier National Park

Date Issued: Valid Until:

Parks Canada percy woods, Parks Canada

Avalanche Forecast

Mon Apr. 29th · 8:00AM

Alpine

Danger Ratings Below Threshold

Treeline

Danger Ratings Below Threshold

Below Treeline

Danger Ratings Below Threshold
Wind Slabs Wind Slabs
Loose Wet Loose Wet

Alpine

Danger Ratings Below Threshold

Treeline

Danger Ratings Below Threshold

Below Treeline

Danger Ratings Below Threshold

Alpine

Danger Ratings Below Threshold

Treeline

Danger Ratings Below Threshold

Below Treeline

Danger Ratings Below Threshold

Avoid exposure to cornices which are large and taking significant solar input today. 

Weather Forecast

Sunny with cloudy periods, light to moderate NE winds and alpine temperatures of -3C are forecast today. Freezing levels should rise to around 1800m. Tuesday calls for cloudy with scattered flurries, light ridge winds and an alpine high of -3C. Wednesday flurries with possible accumulation of 12cm along with a freezing level of 1800m.

Snowpack Summary

Mod to strong NE winds have redistributed up to 10cm new snow that fell Friday night. This now sits on a melt freeze crust at treeline and below as well as solar aspects in the alpine. Isothermal snow lives below these surface crusts. Total storm snow this week now over 60cm in the high Alpine, N-NE aspects will have retained the driest snow.

Avalanche Summary

One new size 2 slide observed off the Lens slide path of Mt Tupper ran to the top of the runout. No new backcountry slides observed or reported.

Confidence

Problems

Wind Slabs

Wind Slabs

Mod -strong N-NE winds Saturday night have reverse loaded recent storm snow onto alpine and exposed treeline SW-S aspects. These new thin slabs will reside over old melt freeze crusts and may be sensitive to human triggering.

  • Be careful with reverse loaded pockets of wind slab at ridgeline.

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

Elevations: Alpine, Treeline.

Likelihood

Likely - Possible

Expected Size

1 - 2
Loose Wet

Loose Wet

Alpine temps are forecast to rise to a cool -3C today. However steeper true solar aspects may see enough spring solar radiation to start shedding surface snow in the form of point releases.

  • Minimize exposure to steep, sun exposed slopes when the solar radiation is strong.
  • Use extra caution on slopes if the snow is moist or wet.

Aspects: South East, South, South West.

Elevations: Treeline, Below Treeline.

Likelihood

Likely - Possible

Expected Size

1 - 2