8:44 a.m., Monday, May 25, 2009
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
BE ALERT - BE AWARE
BE ICE SMART
WHITE MOUNTAIN National Forest
THIS IS THE LAST ADVISORY FOR THE SEASON. 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.
The 5 scale (low through extreme) system will be
reinstated next season when needed. This
GENERAL
ADVISORY will be in effect in Tuckerman until complete
melt out later this summer. The snow coverage that
is left has settled out, been skier compacted, and
has been thru multiple melt-freeze processes. 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
the past. 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 melt out. 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 as 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 will continue to grow in size
until melt out. 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 Mount Washington
Volunteer Ski Patrol once again put in a substantial
amount of time with approximately 1850 hours of
service for your safety this season! Since the Patrol
began in 1938 one individual, Swampy Paris, has
surpassed a full year of dedicated volunteerism
with an unbelievable 497 days upon his retirement
in 1984. Currently, Kevin LaRue, John Kneriem and
Roger Damon are each closing in on an entire year
(365 days) of their lives volunteering in the Ravine.
The Patrol is truly an exceptionally 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 higher summits forecast.
For more information, contact the U.S. Forest Service
Snow Rangers or the AMC at the Pinkham Notch Visitor
Center or Hermit Lake Shelters. This is the last
advisory for the 2008-2009 season.
Christopher Joosen, Snow Ranger
USDA Forest Service
White Mountain National Forest
(603) 466-2713 TTY (603) 466-2856
Avalanche Advisory Archives
| TUCKERMAN RAVINE |
| Hillman's Highway |
|
| Lower Snowfields |
|
| Little Headwall |
|
| The Bowl |
|
| Headwall |
|
| The Lip |
|
| Left Gully |
|
| Right Gully |
|
|
| HUNTINGTON RAVINE |
| Escape Hatch |
|
| South Gully |
|
| Odell's Gully |
|
| Pinnacle Gully |
|
| Central Gully |
|
| Yale Gully |
|
| Damnation Gully |
|
| North Gully |
|
|
U.S. AVALANCHE DANGER SCALE
LOW: Natural avalanches very unlikely. Human triggered avalanches unlikely. Generally stable snow. Isolated areas of instability. Travel is generally safe. Normal caution advised.
MODERATE: Natural avalanches unlikely. Human triggered avalanches possible.. Unstable slabs possible on steep terrain. Use caution in steeper terrain on certain aspects (defined in accompanying statement).
CONSIDERABLE: Natural avalanches possible. Human triggered avalanches probable. Unstable slabs probable on steep terrain. Be increasingly cautious in steeper terrain.
HIGH: Natural and human triggered avalanches likely. Unstable slabs likely on a variety of aspects and slope angles. Travel in avalanche terrain is not recommended. Safest travel on windward ridges of lower angle slopes without steeper terrain above.
EXTREME: Widespread natural or human triggered avalanches certain. Extremely unstable slabs certain on most aspects and slope angles. Large destructive avalanches possible. Travel in avalanche terrain should be avoided and travel confined to low angle terrain well away from avalanche path run-outs.