Avalanche Advisory for Tuckerman and Huntington Ravines
Posted: 8:35 a.m., Friday, December 19, 2003

Tuckerman Ravine has LOW and MODERATE avalanche danger. Hillman's Highway, the Lower Snowfields, the Little Headwall, and Left gully have Low avalanche danger. Natural avalanches are very unlikely and human triggered avalanches are unlikely except in isolated pockets. Normal caution is advised. All other areas in Tuckerman have Moderate avalanche danger. Natural avalanches are unlikely and human triggered avalanches are possible on steep snow covered open slopes and gullies. Unstable slabs are possible. Use caution in steeper terrain.

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.

The summit received 6 cm (2.4 in) of new snow in the past 24 hours and expect snow showers to continue during the first half of the day. High W, WNW, and NW winds loaded many areas in Tuckerman with new snow and a few locations in Huntington. This loading will continue with any new snow today. Some examples of new loading can be found in the Lip and pockets in the bowl of Tuckerman as well as the lower half of Central gully in Huntington. These areas are both E and SE facing aspects.

Wednesday's 10.9 cm (4.2") rain caused several wet loose and slush avalanches in Huntington Ravine. O'Dells, Pinnacle, The Harvard Bulge, Yale, and Damnation all presented evidence of wet debris this morning. With the falling temperatures, ice dams should be expected throughout both ravines.

The John Sherburne ski trail was hit hard by the rain, but still has good coverage. However, expect very icy and hard conditions, some blowouts, abrupt water bars, open holes, and running water in places.

THE LION HEAD SUMMER TRAIL IS CLOSED AND THE WINTER ROUTE IS OPEN.

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.****

Christopher Joosen, 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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