Archived

Avalanche Forecast

Nov 30th, 2019–Dec 1st, 2019

Alpine

1: Low

The avalanche danger rating in the alpine will be low

Treeline

1: Low

The avalanche danger rating at treeline will be low

Below Treeline

1: Low

The avalanche danger rating below treeline will be low

Alpine

2: Moderate

The avalanche danger rating in the alpine will be moderate

Treeline

1: Low

The avalanche danger rating at treeline will be low

Below Treeline

1: Low

The avalanche danger rating below treeline will be low

Alpine

2: Moderate

The avalanche danger rating in the alpine will be moderate

Treeline

1: Low

The avalanche danger rating at treeline will be low

Below Treeline

1: Low

The avalanche danger rating below treeline will be low

Regions: Little Yoho.

Heading out with the mind set of "LOW means GO" may lead you into terrain where triggering a small avalanche has severe consequence, and these are still possible in extreme terrain. Check the alpine weather stations for inverted temperatures.

Weather Forecast

Temperatures Sunday AM will be -20C or lower in the valley bottoms but up high will continue to be warmer staying at -5 to -10C. Winds will generally be light with some moderate gusts in the alpine. No snow is expected. Sunday night into Monday, winds will increase to strong from the SW in the alpine along with some flurries along the divide.

Snowpack Summary

Cold temperatures continue to facet the entire snowpack. There is widespread but mainly unreactive wind effect in the alpine. The Nov 8 crust is down 20-30cm up to 2400m which is facetting over time. The lower snowpack is a mix of weak facets & crusts. Snowpack depths at treeline vary from 60-90 cm with up to 140cm in lee areas.

Avalanche Summary

No new avalanches observed Saturday. On Friday Sunshine ski hill had one explosive controlled wind slab that stepped down to facets creating a size 2.5. An isolated event, but this shows that in the right spot you can still trigger an avalanche.

Confidence

Freezing levels are uncertain on Sunday