Spring has definitely hit Rogers Pass, with record high temperatures for
this time of year. Rapid and intense daytime warming, with little
overnight recovery, has caused an interesting avalanche cycle in the past
few days. Specifically, numerous very large avalanches (to size 3.5),
releasing very deep in the snowpack, or to ground, have been observed.
While it is not uncommon to have many moist or wet avalanches at this time
of year, the fact that we have seen so many large slab avalanches, many of
which have run to valley bottom, is a good reminder that we still have a
Persistent Weak Layer (PWL) problem. If you are planning on skiing at the
Pass in the next while, be aware of the potential for large slab avalanches
which could fail anytime of day or night, in addition to more typical
springtime moist afternoon avalanche cycles.
(See attached file: IMG_0075.JPG)(See attached file: IMG_0099.JPG)
Sylvia Forest
Mountain Guide
IMG_0075.JPG
Description: JPEG image
IMG_0099.JPG
Description: JPEG image
_______________________________________________
These observations and opinions are those of the person who submitted them. The
ACMG and its members take no responsibility for errors, omissions, or lapses in
continuity. Conditions differ greatly over time and space due to the variable
nature of mountain weather and terrain. Application of this information
provides no guarantee of increased safety. Do not use the Mountain Conditions
Report as the sole factor in planning trips or making decisions in the field.
See http://acmg.ca/mcr for more information.
See http://informalex.org/subscribe.shtml#unsubscribe to remove your name from
this list.
|
