Avalanche Forecast
Issued: May 1st, 2017 7:53AM
The alpine rating is below threshold, the treeline rating is below threshold, and the below treeline rating is below threshold.
Known problems include Wind Slabs, Loose Wet and Cornices.
chris gooliaff,
Parks Canada
The Winter Permit System is finished in Glacier National Park for the winter season and this is the last bulletin. Early starts and finishes are crucial during the warm months of the year, so if you have to get some last turns in, start by headlamp!
Summary
Weather Forecast
With increased daylight hours, there is less time in the night for temp's to drop below freezing. Incoming Spring and Summer storms will likely mean rain to mountain-tops, with the occasional colder storm dropping snow on the highest peaks.
Snowpack Summary
In May, high elevation N aspects still hold a winter snowpack with surface windslab that may be sensitive to human triggering given the right location. On all other aspects, expect temperature and sun crusts until daytime warming softens the surface. The snowpack is isothermal below these surface crusts at tree-line and below tree-line elevations.
Avalanche Summary
In Spring and early-Summer, avalanche activity can be expected during the heat of the day, during rain events, or at any time if there has not been a good overnight refreeze of the surface crust.
Confidence