Date: Lundi, 29 Avril 2002
Temps: 7h44
WE ARE NOW POSTING BULLETINS ON AN AS NEEDED BASIS
AS CONDITIONS CHANGE SO YOU MAY NOT SEE A NEW BULLETIN
EVERY DAY. WE ARE THROUGH FORECASTING FOR HUNTINGTON
RAVINE FOR THE SEASON. YOU WILL NEED DO YOUR OWN
STABILITY ASSESSMENT WHEN ENTERING THE AREA. THERE
WILL BE A DANGER OF FALLING ICE (GLACE EN CHUTE) FOR THE REST OF
THE SPRING.
TUCKERMAN RAVINE HAS MODERATE AVALANCHE DANGER.
Natural avalanches are unlikely and human triggered
avalanches are possible. Use caution in steeper
terrain and be prepared for an
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AVERTISSEMENT
DANGER DE GLACE EN CHUTE
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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increasing avalanche
danger today. Variable conditions will be found
in the Ravine today. Expect some areas to be covered
with only a thin coating of snow while stong lee
areas protected from winds may have deep new pockets.
The summit received 4.4 inches (11 cm) of snow in
the past 24 hours with variable winds and temperatures.
Temps started in the teens Sunday morning when the
snow began with winds flexing back and forth between
SE and S peaking around 50-55 mph. Temperatures
rose to 36 degrees with a short period of light
rain in the ealy morning hours before temperatures
dropped again into the lower twenties where they
are currently. Winds are now out of the west hovering
around 20 mph with temperatures expected to drop
into the low teens through the day. Snow showers
are predicted for the day so EXPECT AN INCREASING
AVALANCHE DANGER WITH THE POSSIBILITY OF THE AVALANCHE
RATING GOING TO 'CONSIDERABLE' IF WE RECEIVE ENOUGH
PRECIPITATION. MORE SNOW IS FORECASTED TONIGHT AND
ON AND OFF THROUGH THE WEEK SO ALTHOUGH IT IS ALMOST
MAY PAY ATTENTION FOR AVALANCHE POTENTIAL IN YOUR
MOUNTAIN TRAVELS. THIS INCLUDES MANY AREAS OUTSIDE
OUR FORECAST AREA LIKE THE SNOW FIELD TRAVERSES
ON THE LION HEAD SUMMER TRAIL. As Brad mentioned
in Sundays advisory avalanche conditions could be
like riding on a see-saw this week with changing
conditions. Be prepared for the avalanche danger
danger to go up and down so use all your avalanche
skills when venturing into the mountains.
The lip area is nearing the point where it will
need to be closed with the narrow snowband and the
many open and some hidden crevasses. It is best
to avoid this area. CLIMB UP WHAT YOU PLAN ON COMING
DOWN TO AVOID ANY SURPRISES. PLEASE take off your
skis to walk 40 yards rather than ski over fragile
alpine vegetation when leaving areas like Hillmans
Highway and the Lower Snowfields. Many of those
little trees are over 100 years old.
BE AWARE OF FALLING ICE (GLACE EN CHUTE)! Each year over 1000 tons
of ice forms on the headwall in Tuckerman Ravine
and the gullies of Huntington Ravine. In the spring
it all comes down, often in pieces larger than cars.
Many folks have been injured and even killed by
falling ice (glace en chute). Pay attention to where you are, do
not linger under ice. Have a plan in mind about
what you will do if ice comes down. Station yourself
near a large rock to duck behind in the event of
ice fall. BE ICE SMART!
THE LION HEAD SUMMER TRAIL IS OPEN. Realize the
summer trail still has large steep snow traverses.
A fall here may see you going over a cliff band
so you will need crampons and an ice axe to travel
safely in this area. These snowfields may also be
an excellent sliding surface for avalanche activity
in the event we get more snow. This is always a
possibility during April and May at 5000 ft. MOUNTAINEERING
BOOTS, CRAMPONS, AND AN ICE AXE ARE NEEDED!
THE JOHN SHERBURNE SKI TRAIL IS NOW CLOSED TO ALL
USE. Just because you see snow in back of the rope
it is only continious for the first 200 feet. After
that you are in mud most of the time. This is the
truth. TO PREVENT EROSION TO THE SKI TRAIL PLEASE
USE THE TUCKERMAN RAVINE TRAIL FOR HIKING BOTH UP
AND DOWN FROM PINKHAM NOTCH. There is no skiing
or riding allowed on the Tuckerman ravine trail.
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 will be updated on an as needed basis
as conditions change.
Christopher Joosen, Snow Ranger
USDA Forest Service
White Mountain National Forest
(603) 466-2713 TTY (603) 466-2856