Avalanche Advisory for Tuckerman and Huntington Ravines
Posted: 7:57 a.m., Monday, December 29, 2003

Tuckerman Ravine has MODERATE and LOW avalanche danger. The Lip has Moderate avalanche danger. Natural avalanches are unlikely and human triggered avalanches are possible. Unstable slabs are possible in steep terrain. Use caution in steeper terrain. All other areas in Tuckerman Ravine have Low avalanche danger. Natural avalanches are very unlikely and human triggered avalanches are unlikely except in isolated pockets. Normal caution is advised.

Huntington Ravine has LOW avalanche danger. Natural avalanches are very unlikely and human triggered avalanches are unlikely except in isolated pockets. Normal caution is advised.

It is another beautiful morning in the mountains with clear skies and warm temperatures. The higher summits should get above 4.5 C (40 degrees F) today which will continue stabilizing slabs brought in by Thursday and Friday's new snow. Due to warm temperatures, sheltered southern aspects will gain a tremendous amount of heat today. The past two days have provided these aspects with noteable solar gain which has helped stabilize slabs and diminished the elasticity removing propagation potential. Our main concerns today are related to natural loose point release activity. In addition to human traffic the potential for falling ice triggering some of these pockets will rise through the day. Areas that have the most potential for this type of activity are the Sluice, Lip and Headwall.

A storm system is heading our way and looks as though it will arrive here tomorrow. It is forecasted to start as rain, possibly mixed precipitation in the mountains, before ending in 3 to 7 cm of snow. Be sure to check tomorrow's advisory before heading into the mountains to see how this storm may effect our snowpack.

On Saturday we took our first opportunity to see Thursday-Friday's storm results. We had avalanche activity in Left Gully, Chute Variation, the Chute, The Bowl, Chicken Rock Gully next to Lunch Rocks, the Sluice, as well as Central and Damnation Gullies in Huntington. Tuckerman and Huntington Ravines are currently interesting places to see multiple debris fields and fracture lines.

The John Sherburne ski trail has variable conditions due to the recent changes in temperature and precipitation. Expect new snow over areas of ice, some blowouts, abrupt water bars, open holes, and running water.

THE LION HEAD WINTER ROUTE IS OPEN. This is a steep and challenging route. Ice axe, crampons, and the skill to use them well are necessary for safe travel. Remember, it is always easier to go up than come down.

AS ALWAYS, THIS ADVISORY IS ONE MORE TOOL TO HELP YOU MAKE YOUR OWN DECISIONS IN AVALANCHE TERRAIN. It should be used along with your own snow stability assessments, knowledge of safe travel techniques, skill in reading mountain weather's effect on the snowpack, and avalanche rescue.

Please Remember:
•   ****Any new precipitation may increase the avalanche danger, this includes wind transported snow. ****Obtain the latest weather forecast before starting out. ****For more information, contact any of the following: U.S. Forest Service Snow Rangers, AMC at the Pinkham Notch Visitor Center, AMC at the Hermit Lake Shelters, HMC at the Harvard Cabin. ****This avalanche advisory will expire at midnight.****

Brian Johnston, Snow Ranger
USDA Forest Service
White Mountain National Forest
(603) 466-2713 TTY (603) 466-2856
 
This is the Official Tuckerman Ravine website.  Occasionally the remoteness of Tuckerman Ravine, weather, or communication problems prevent the website from being updated immediately.  Check the date, and if it is not the most recent, you can also call the National Forest Service's 24 hour avalanche hotline at (603) 466-2713 (ext. 4)

Avalanche Advisory Archives.

United States Avalanche Danger Descriptions.

Échelle Canadienne de risque d’avalanche.

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