Date: Vendredi, 8 Mars 2002
Temps: 8h31
TUCKERMAN RAVINE HAS LOW, MODERATE, AND CONSIDERABLE
AVALANCHE DANGER. The Little Headwall and the Lower
Snowfields both have Low (Faible) avalanche danger. Human
triggered avalanches are unlikely EXCEPT IN ISOLATED
POCKETS. These pockets do exist so keep an eye out.
Hillmans Highway has Moderate avalanche danger.
Natural avalanches are unlikely and human triggered
avalanches are possible on steep snow covered open
slopes and gullies. Use caution in steeper terrain
particularly high in the northern start zone. All
other areas in Tuckerman have Considerable (Considérable) avalanche
danger. Natural avalanches are possible and human
triggered avalanches are probable. Unstable slabs
are probable in steep terrain be increasingly cautious
in these areas.
HUNTINGTON RAVINE HAS MODERATE AVALANCHE DANGER.
Natural avalanches are unlikely and human triggered
avalanches are possible on steep snow covered open
slopes and gullies. Use caution in steeper terrain.
Winds have held out of the west in the 40-50 mph
(65-80 kph)range for roughly the last 36 hours.
These winds have been slowly adding new slab, on
top of loose powder, on ice. This combination has
made for unstable areas of snow mainly found in
strong lee pockets protected from the wind. However,
it is a mixed bag out there. EXPECT BOTH UNSTABLE
DEEP POCKETS OF SNOW AND A HARD ICY SURFACE. You
may find the old icy surface in locations more exposed
to the wind. There is still a hard ice crust exposed
in many locations making for a slick sliding surface.
The icy conditions is currently a Catch-22. In areas
where you don't need crampons because of deep new
snow you will be in an unstable location. If you
are on the ice crust or on just several inches of
new snow, on the crust, you will need your crampons.
So...crampons are an absolute necessity for walking
on any steep surface. Use extra caution with each
step. We have had two accidents here in Tuckerman
over the past 3 days due to the icy surface. On
Tuesday a skier was heading up, without crampons,
and fell before getting very far at all. Yesterday
two roped climbers fell with crampons on and were
brought down into trees and rocks. The exposed ice
surface is extremely slick so self arrest has to
be instantaneous! Due to the poor snow year so far
a fair amount of rocks are in the run out zones
of most locales so BRING CRAMPONS AND AN ICE AXE
FOR SAFER TRAVEL.
Once again a wintery mix is expected for the weekend.
Rain and snow are forecasted with another cold front
coming for the second half of the weekend. Temperatures
may hit the high 50's in the valley, but it looks
a bit more promising than last weeks rain. Check
tomorrows weather report before heading out for
the weekend.
ICE DAMS and multiple water gushers have been witnessed
in Huntington Ravine. Water running from ice tool
placements have been reported in numerous locations
so be cautious for hydrolic pressure and ice dams
in commonly found areas such as over the top of
bulges and steep colums.
THE LION'S HEAD WINTER ROUTE IS OPEN. Follow the
orange Lion Head signs off of the Tuckerman Ravine
trail about 1.75 miles up from Pinkham. Use caution
on the trail as there are areas where the rocks
are showing. Please stay on route to minimize climber
impacts to the area. Consider it good practice to
move slow and thoughtfully with crampons on rock.
This is a difficult steep route so crampons, ice
axe, and mountaineering skills are essential.
The ski trail has full coverage but is pretty firm
after the rain and with the current cold temperatures.
There are a couple of areas of water ice lower on
the trail. All of this is now covered with a veneer
of new snow only an inch or two thick hiding most
of the icy hazards.
PLEASE REMEMBER:
Any new precipitation may increase the avalanche
danger, this includes wind transported snow.
Obtain latest weather forecast before starting out.
For more information, contact the U.S. Forest Service
Snow Rangers: AMC at Pinkham Notch Visitor Center
or Hermit Lake Shelters.
This bulletin expires today at midnight and the
next avalanche bulletin will be issued tomorrow.
Christopher Joosen, Snow Ranger
USDA Forest Service
White Mountain National Forest
(603) 466-2713 TTY (603) 466-2856