Date: Monday, May 26, 2008
Time: 7:53 a.m.
THIS IS THE LAST ADVISORY FOR THE SEASON. HOWEVER,
CERTAIN HAZARDS WILL PERSIST UNTIL MELTOUT SO PLEASE
READ THIS FINAL ADVISORY BEFORE HEADING INTO THE
RAVINES OR TO THE SUMMIT OF MT. WASHINGTON. WE'VE
ENJOYED SEEING ALL OF YOU IN THE MOUNTAINS AND LOOK
FORWARD TO NEXT WINTER.
We are through using the U.S. 5 scale danger rating
system for the remainder of the season. The 5 scale
(low through extreme) system will be reinstated
next season when needed. This GENERAL ADVISORY
will be in
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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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effect until complete melt out later
this summer. The snow coverage that is left has
settled out, been skier compacted, and is going
thru the late season melt-freeze process. However,
the numerous large snowfields may make for a good
sliding surface for late season snow. A June or
early July snowstorm is not an unheard of occurrence
on Mt. Washington. Be prepared for the possibility
of new snow instability if this occurs. Also watch
for the possibility of sustained warm weather and/or
heavy rain to blow out running water from beneath
the snow. This has caused wet slush avalanches in
Tuckerman and Huntington Ravines in the past. YOU
WILL NEED TO PUT YOUR AVALANCHE SKILLS TO WORK FOR
THESE LATE SEASON HAZARDS. BE PREPARED TO DO YOUR
OWN SNOW STABILITY ASSESSMENTS IF ENTERING AVALANCHE
TERRAIN ON MT. WASHINGTON.
THE LIP AND THE TUCKERMAN RAVINE TRAIL THROUGH
THE RAVINE FROM LUNCH ROCKS, ON THE FLOOR OF THE
BOWL, TO THE JUNCTION WITH THE ALPINE GARDEN TRAIL
JUST ABOVE THE HEADWALL ARE CLOSED TO ALL USE.
Only this section of the trail is closed. This section
is closed annually due to the magnitude of crevasses
and undermining that develop in this area during
the spring meltout. A fall in this area would have
severe consequences. This trail section will be
reopened when the tread melts out. Until then, be
prepared to use an alternate route. Check in with
one of the local visitor centers to determine the
status of the closure before starting up. If you
use motorized access to the summit of Mt. Washington
it is NOT recommended that you descend any route
through the Ravines. You will not be aware of the
hazards below you. Many have attempted this over
the years, often resulting in severe accidents.
BE AWARE OF FALLING ICE. Each year over 1000 tons
of ice form on the Headwall and in other areas in
Tuckerman Ravine as well as the gullies of Huntington
Ravine. In the spring it all comes down, often in
pieces larger than cars. This hazard will persist
until complete melt out. The best thing you can
do to protect yourself is to avoid spending time
in the potential path of falling ice. If you are
going to enter one of these paths, formulate a plan
in advance for what you'll do when ice falls. CREVASSES
AND UNDERMINED SNOW appear as the snow pack slowly
creeps downhill and separates from the ledges on
the Headwall. These openings vary tremendously in
size and include the many waterfalls on the Headwall.
Hiking up what you plan on skiing is recommended
so you can see what you're in for on the way down.
This includes analyzing your run out which will
become more limited as the season progresses. Skiers
and climbers need to pay attention to what is below
at all times and constantly evaluate the potential
outcome of a fall or slide. As the water runs and
melts out the snow from beneath, undermining will
continue to occur, collapsing the snow above. Be
extremely cautious in these areas.
We sincerely thank all the groups that helped us
make it through the season successfully. We couldn't
do the job without the many volunteer hours carrying
injured people down the mountain and giving out
good information to visitors. The Mountain Washington
Volunteer Ski Patrol once again broke their old
staffing record for one season with over 2000 hours
of service for your safety! They are truly an unbelievably
dedicated bunch of folks and we look forward to
their triumphant return next March. Thanks for a
great season and we’ll see you next winter. JEFF,
JUSTIN, BRIAN, AND CHRIS
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 or the AMC at Pinkham Notch Visitor
Center or Hermit Lake Shelters. This is the last
advisory of the 2007-2008 season.
Christopher Joosen, Snow Ranger
USDA Forest Service
White Mountain National Forest
(603) 466-2713 TTY (603) 466-2856