Date: Tuesday, May 13, 2008
Time: 8:33 a.m.
Tuckerman Ravine has LOW avalanche danger. Natural
avalanches are very unlikely and human triggered
avalanches are unlikely except in isolated pockets.
Normal caution is advised.
A "GENERAL ADVISORY" is currently in effect for
Huntington Ravine. We have finished issuing avalanche
advisories using the U.S. 5-scale danger rating
system for the remainder of the season. You will
need to do your own snow stability assessments when
using avalanche terrain in Huntington Ravine. A
danger of falling ice exists and will persist until
it all comes down.
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WARNING
ICE FALL DANGER
MASSIVE BLOCKS OF ICE THE
SIZE OF AUTOMOBILES
TRAVEL AT HIGH SPEEDS,
HIT ROCKS, AND SEND DEADLY
SHRAPNEL IN ALL DIRECTIONS
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BE ALERT - BE AWARE
BE ICE SMART
WHITE MOUNTAIN National Forest |
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We've had nothing but Low avalanche danger for some
time now, and I'm beginning to wonder if we'll see
another snowflake before October. Personally, I'm
still hoping for a late May dumping of new snow,
but the way things are going that might be overly
optimistic. Another bluebird day is in store for
today. Summit temperatures will be around 40F (4.5C)
with gusty winds diminishing as the day progresses.
If you're coming up today, expect to find top to
bottom coverage in both Hillman's and Left Gully.
These are the two runs we recommend not only for
their length and quality but they also have less
exposure to the objective hazards that can be found
elsewhere on the mountain. These hazards include
icefall, crevasses, and undermined snow.
ICEFALL is a significant hazard in Tuckerman Ravine.
Large chunks still remain above Lunch Rocks in the
Sluice and in the center Headwall, though no area
is completely immune to icefall. A number of people
had close encounters with icefall recently. Remember,
always be aware of what is above you and have a
plan in mind for what you will do if icefall occurs.
CREVASSES exist in many areas and rival icefall
as the primary concern for visitors. Although the
Lip, Headwall, and upper Bowl have the greatest
concentration of crevasses most other areas have
begun developing fissures as well. These may be
very difficult to see from above so remember to
always climb up what you plan on descending to allow
you to assess the hazards at a more leisurely pace.
TRAVELING THROUGH THE LIP AREA, INCLUDING THE TUCKERMAN
RAVINE TRAIL FROM LUNCH ROCKS TO THE TOP OF THE
RAVINE, IS NOT RECOMMENDED. The hazards in this
area include deep crevasses directly in the fall
line, undermined snow near the waterfall, and icefall
potential on both sides. Better lines can be found
elsewhere with less exposure to these objective
hazards. The summer hiking trail is deeply buried
under snow. The section of trail from Lunch Rocks
to the Alpine Garden is closed annually as crevasses
close in and prevent travel through the Lip. We
are not quite at that point, though this closure
is expected to occur soon.
Be on the lookout for undermined and collapsing
snow in and around water channels. Skiing and riding
down the Little Headwall is no longer an option.
Walk down the Tuckerman Ravine Trail from the floor
of the ravine to get back to Hermit Lake. The upper
section of the John Sherburne Ski Trail is open
with a few bare sections that require walking. A
rope and signs mark the end of the skiable trail.
At this point, you'll need to walk across to the
Tuckerman Ravine Trail and hike to Pinkham. Skiing
and riding are not permitted on the hiking trail
due to a history of accidents between skiers and
hikers.
The Lion Head Summer Trail is now open. Just above
treeline this trail traverses a steep snow-covered
slope. A slip here has the potential to result in
a long sliding fall. We recommend bringing an ice
axe and crampons for safe travel through this section.
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.
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.
For more information, contact the U.S. Forest Service
Snow Rangers, the AMC caretakers at Hermit Lake,
or the AMC at Pinkham Notch Visitor Center. This
advisory will expire at midnight.
Jeff Lane, Snow Ranger
USDA Forest Service
White Mountain National Forest
(603) 466-2713 TTY (603) 466-2856