Date: Samedi, 16 Mars 2002
Temps: 8h57
TUCKERMAN AND HUNTINGTON RAVINES HAVE LOW (FAIBLE) AVALANCHE
DANGER. Natural avalanches are very unlikely and
human triggered avalanches are unlikely except in
isolated pockets. Normal caution is advised.
The summit received a total melted equivalant of
.3 inches (.75 cm) of water. This fell in the form
of snow, sleet, ice pellets, and mostly rain. This
may be lubricating a buried ice layer in an isolated
pocket of snow from earier in the week, but this
isn't a widespread hazard. As the front moves through
expect some rain showers mixing with frozen precipatation.
Expect a brief increase in the avalanche danger
if we pick up steady rain. However, based on the
weather forecast this should be short lived as the
higher summits are expecting temperatures to drop
into the teens later today. This will begin freezing
the surface and move into the snowpack through the
evening hours. Be prepared for changing weather,
avalanche, and snow surface conditions as the day
continues. The surface should be very slick by later
today so be prepared with crampons, an ice axe,
and mountaineering skill. A slip and fall on a slick
slope could produce grave consequences as rocks
are in most runout areas. Climbers, hikers, skiers,
and riders need to be prepared to use their mountaineering
skills and have all the right equipment.
We are heading into spring conditions so start watching
for the usual warm weather hazards. One example,
but not limited to, is the Little Headwall which
is beginning to be undermined.
ICE DAM development should be one of the primary
hazards for ice climbers in the Ravines after the
temperature drops with the frontal pass. 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 quite thin,
and watch for ice flows, emerging rocks, and changing
conditions.
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