Avalanche Advisory for Tuckerman and Huntington Ravines
| Posted: 5:18 p.m., Wednesday, November 8, 2006 |
This is an early season GENERAL AVALANCHE ADVISORY.
Use of the 5-scale danger rating system will begin
when conditions warrant. Until then new advisories
will be issued as needed. A General Advisory is
issued when instabilities are isolated within the
entire forecast area. However it's important to
realize that avalanche activity may occur within
these locations before the issuance of a 5-scale
forecast. This is a critical fact to remember. Within
the General Advisory there are isolated snowfields
that are growing in size that should be watched.
Examples in Tuckerman include Left Gully, areas
in the center/left lower Bowl and the Lip. Huntington
Ravine is not immune as some snowfields are potential
bed surfaces particularly in sections of Odell,
Yale and Damnation. Under a General Advisory you
need to make your own avalanche stability assessments
before venturing into any open slopes. Realize that
snowfields may be developing on existing summer
trails. Check tuckerman.org frequently as we move
through November and certainly check for the latest
avalanche advisory before heading into avalanche
terrain.
Warm temperatures and rain are going to dominate
the weather in the mountains over the next couple
of days. This weather has the potential to cause
a variety of issues for folks traveling into the
Ravines. The first is the potential for avalanche
activity associated with rain. There is potential
for the rain to trigger slab and wet loose avalanches
in some locations in the Ravines. While most avalanche
paths are not well developed, it would still be
wise to stay away from the snowfields and gullies
that have filled in during rain events. The other
major concern associated with the warm and rainy
forecast is the increased potential for icefall
to occur. Many folks have been injured and killed
by falling ice so pay attention to where you are,
and don't linger under ice. Have a plan in mind
concerning what you will do and where you will go
if ice comes down. If you are anxious to get out
climbing early season ice, my advice is to be patient
and give it time. Some of the gullies have been
climbed this season but the conditions are deteriorating.
On Tuesday most of the gullies in Huntington were
very thin and had evidence of recent icefall. The
next couple of days will continue to beat these
climbs up.
We are absolutely in early winter in the high mountains
so don't plan on being able to follow summer trails
safely. Trails going through ravines and gulfs are
buried with snow in many areas and require winter
gear, i.e. winter clothes, ice axe, crampons, avalanche
beacons, shovels, and probes. Don't wait any longer
to refresh your avalanche skills. Pull out your
beacon, install some fresh high quality alkaline
batteries, and practice. Review your safe travel
rules, techniques for assessing snow stability,
and sign up for an avalanche course. We will soon
have all the avalanche courses offered in the valley
this winter on our website, tuckerman.org.
| Please Remember: |
| |
It is impossible to accurately predict natural events,
such as avalanches, in every instance. This Advisory
is one tool to help you make your own decisions
in avalanche terrain. It should be used along with
safe travel techniques, snow stability assessments,
an understanding of weather's effect on the snowpack,
and proficiency in avalanche rescue.
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You should obtain the latest weather forecast before
heading into the mountains. Anticipate a changing
avalanche danger when actual weather differs from
the National Weather Service forecast.
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For more information, contact the U.S. Forest Service
Snow Rangers or the AMC at Pinkham Notch Visitor
Center or Hermit Lake Shelters. |
|
Brian Johnston, Snow Ranger
USDA Forest Service
White Mountain National Forest
(603) 466-2713 TTY (603) 466-2856
This is the Official Tuckerman Ravine website. Occasionally
the remoteness of Tuckerman Ravine, weather, or communication problems prevent
the website from being updated immediately. Check the date, and if it is not
the most recent, you can also call the National Forest Service's 24 hour avalanche
hotline at (603) 466-2713 (ext. 4)
Avalanche Advisory Archives.
United States Avalanche Danger Descriptions.
Échelle Canadienne de risque d’avalanche.