Avalanche Forecast

Issued: Apr 30th, 2013 4:00PM

The alpine rating is below threshold, the treeline rating is below threshold, and the below treeline rating is below threshold. Known problems include Loose Wet.

aaron beardmore, Parks Canada

Banff Yoho Kootenay.

This concludes our avalanche bulletin season. However, avalanches still persist. Mainly, we are faced with spring time conditions, cool mornings, hot afternoons. Danger will be HIGH on hot afternoons. Have a safe and enjoyable spring and summer.

Summary

Weather Forecast

The weekend of May 4 and 5 we expect to see double digit temperatures and HIGH avalanche danger in the afternoons (low in the cold mornings). Because there is still significant amounts of snow a high elevations expect the biggest spring avalanche cycle starting Saturday afternoon (May4).

Snowpack Summary

As springtime and warm temperature approach expect to see a daily swing between cool mornings and hot afternoons. This means the avalanche danger will be low in the morning and high in the afternoon. Expect the snowpack to become isothermal in the afternoon.

Avalanche Summary

Call 403-762-1470 between 8am and 5pm and ask to speak to the rescue leader for further avalanche information.

Confidence

Timing or intensity of solar radiation is uncertain on Saturday

Problems

Loose Wet

Expect a large springtime avalanche cycle on hot afternoons. Because this is one of the first major warming events, expect avalanches to reach their maximum run-outs in the hottest part of the day.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 4

Valid until: May 1st, 2013 4:00PM