Glacier National Park Avalanche Forecast

Feb 18th, 2020 8:01AM

The alpine rating is moderate, the treeline rating is moderate, and the below treeline rating is low. Known problems include Wind Slabs.

It's university reading week and it is BUSY in the park.

Keep your head on a swivel for what groups are doing around and above you!

Summary

Weather Forecast

A ridge of high pressure is set up over the province with clearing in the Rogers Pass area today and warming and sunshine tomorrow.

Today: Cloudy with sunny periods, no snow. Light W winds. Alpine high -11C

Tonight: Cloudy with clear periods, no snow. Light N winds. Alpine low -13C

Wed: A mix of sun and cloud, no snow. Light W winds. Alpine high -6C.

Snowpack Summary

Another 10cm of snow overnight, bringing the weekly total to 115cm at Fidelity. Variable stubborn wind slab may be found in alpine elevations along ridge-tops and exposed tree-line features. Steep S to SW aspects have a suncrust buried anywhere between 30-60cm below the surface.

Avalanche Summary

A skier accidental size 1.0 occurred yesterday in Nicci's Notch. Numerous slab avalanches to sz 2.5 were observed from steep alpine start zones on Macdonald and Tupper on Sunday. A cornice failed on Saturday in the North Cirque above Christiana Trees, bringing down a size 2.0 slide into the basin.

Confidence

Timing or intensity of solar radiation is uncertain

Problems

Wind Slabs

An icon showing Wind Slabs

Likelihood

Possible

Expected Size

1 - 2.5

New snow accompanied by recent moderate westerly winds has created windslabs at Alpine elevations. Slabs were observed this week at ridge-top areas and on exposed, cross-loaded slopes. Last night's low density dusting may be hiding these slabs.

  • Watch for signs of instability such as whumphing and cracking.
  • Use caution in lee areas. Recent wind loading has created wind slabs.

Aspects:

North, North East, East, South East, South.

Elevations:

Alpine.

Valid until: Feb 19th, 2020 8:00AM