Bulletin d’avalanche – 15 mars 2020

Avalanche Bulletin - 2020-03-15

20 to 40 cm of new snow with extreme winds Saturday all day long maintain the danger rating at considerable for Sunday.
Areas concerned: Mont Albert, mont Hog’s Back, Champs-de-Mars, mont Lyall, mont Vallières-de-Saint-Réal, mont Blanche-Lamontagne et Mines-Madeleine
Issued on: 2020-03-14 @ 18:00
Valid until: 2020-03-15 @ 18:00
Danger ratings Sunday Monday Tuesday
Alpine Considerable Moderate Considerable
Treeline Considerable Moderate Moderate
Below treeline Moderate Low Low

Avalanche problem #1 : Wind slab

The storm has continued Saturday all day long to reach 20 to 40 cm of new snow. Extremes westerly winds has transported this new snow to form really thick at the top of alpine and at treeline N, NE, E and SE slopes. Also, north and south aspects will be probably crossloaded. The field team has observed few instability signs below treeline. With a CONSIDERABLE rating, natural avalanches are possible while human triggered avalanches are likely.

Avalanche activity

No new avalanche activity have been observed or reported. Thanks for sharing your observations at info@avalanchequebec.ca, on the Avalanche Canada’s Mountain Information Network or with this online form.

Snowpack

With the blizzard conditions at ridgetop this Saturday, our observations in the alpine are limited. 20 to 40 cm of new snow (up to 80cm in leeward slope) covers old hard wind slab below treeline.

Weather forecast

Saturday night: 2 to 5 cm of snow, wind at ridgetop of 80 km/h of the NW, temperature in the alpine of -10 C.

Sunday: Chance of snow, wind at ridgetop of 30 km/h from the NW, temperature in the alpine of -16 C.

Monday: No precipitation, wind at ridgetop of 20 km/h from the SW, temperature in the alpine of -13 C.

Tuesday: 5 to 8 cm of snow, wind at ridgetop of 70 km/h from the SW, temperature in the alpine of -6 C.

Message

For educational purpose, a case study from an avalanche accident that occurred on February 8, 2019 was edited with the precious collaboration of the victims (French only). By analysing the avalanche terrain, avalanche conditions and group behaviors, it is possible to learn more about mountain risks and prevent further accidents.

Snow report

Centre de découverte et de services - Mis à jour le 14 mars 2020 à 08:00

24 h 48 h 7 jours Saison Au sol
15 cm 15 cm 37 cm 382 cm 110 cm
Disclaimer This avalanche bulletin is prepared with the most recent weather, snowpack and avalanche activity data available for the Chic-Chocs. It is strictly information that can be used as a part of a decision making process and is not intended to be a replacement for knowledge about avalanche safety including and not limited to safe travel practices and the use of backcountry rescue equipment such as beacon, shovel and probe.

Prepared by : Laurie Dumas

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