7:40 a.m., Friday, April 14, 2000 The avalanche danger for Tuckerman Ravine is MODERATE. Human triggered avalanches are POSSIBLE. Natural avalanches are unlikely. Caution is advised on steep snow covered open slopes and gullies. AVALANCHE FORECASTING IN HUNTINGTON RAVINE HAS ENDED FOR THE SEASON. WE WILL CONTINUE FORECASTING FOR TUCKERMAN RAVINE UNTIL MEMORIAL DAY. High pressure and relatively cold temperatures continued to dominate our weather picture overnight. This pattern will continue today, though the high pressure is moving offshore. Clouds will be increasing today, as the next frontal system passes through the area. Weekend weather forecasts are calling for clouds and scattered showers for tonight. Partial clearing behind the frontal system will improve the weather for first half of the weekend and into Sunday. Clouds and rain showers are in the forecast for late Sunday and into Monday. The prevailing cold temperatures overnight have not helped to stabilize the snowpack, so we will continue to keep the avalanche danger at MODERATE. The summit of Mount Washington reported almost a foot of snow over the past week. This was accompanied by strong winds from the West and Northwest. This has caused a good deal of wind loading onto the easterly facing slopes of Tuckerman Ravine. Slopes with a south-easterly aspect seemed to have picked up the most snow. This includes Right Gully, Sluice, and Lip areas. Continuing caution is advised when travelling over areas of newly deposited, wind-drifted snow. There was an avalanche accident in Tuckerman Ravine yesterday. A skier triggered a moderate sized slab avalanche which caught his partner, and took him for a ride through the Lunch Rocks. The skier who triggered the slide was able to ski out of the moving snow. An initial fracture line profile indicated that the fracture was 110 feet wide, and 8 inches deep. The slide was triggered on a SE aspect to the skiers right of the Sluice. The victim suffered some potentially serious injuries, and a full blown evacuation was required. The avalanche danger yesterday was MODERATE, and had been CONSIDERABLE the previous day. MODERATE avalanche danger indicates that human triggered avalanches are possible. Travelers in avalanche terrain often underestimate the seriousness of a MODERATE rating, especially when the weather is beautiful. Keep your eyes open up there. Practice safe travel techniques at all times when there is the possibility of avalanches. Falling ice is common in the spring. In Tuckerman several hundred tons forms on the headwall during the winter and it all falls in the spring, usually on the nice warm days when people are basking on the rocks, watching all the excitement or lack of it. If you park yourself in the ravine, avoid being under any ice or have a nice big rock that you can duck behind quickly. Several people have been killed by falling ice. Crevasses and undermined snow appear as the snow pack slowly creeps downhill and separates from the ledges on the Headwall. These openings vary from a few inches to 80 feet (24m) deep. This includes the main waterfall on the Headwall. Several people have seriously injured and/or killed falling into these crevasses. Due to the threat of avalanches on the Lion Head Summer Trail, the LION HEAD WINTER ROUTE is recommended. Climbers using this route should be aware that the trail is steep and challenging. Good winter mountaineering technique is essential, as well as crampons and an ice axe. Please note that the winter route passes thru avalanche terrain. Climbers on the route must be sure to not stray from the trail. Skiers should take note that skiing down to Hermit Lake from Tuckerman Bowl is no longer an option. You will have to walk down the Tuckerman Ravine trail, same way that you went up. The Sherburne ski trail has ice and bare spots. Currently it is very slick and is closed about half way down due to rocks, mud and grass below. If you make it to the closure, you need to cross at this location to the Tuckerman Ravine hiking trail and WALK the rest of the distance to Pinkham Notch. Please do not ski, slide or ride on the Tuckerman Ravine Trail. PLEASE REMEMBER: o Any new precipitation will increase the avalanche danger. o Obtain latest weather forecast before starting out. o For more information, contact the U.S. Forest Service Snow Rangers: AMC at Pinkham Notch Visitor Center or Hermit Lake Shelters.