On Sunday March 17, Snow Ranger staff from the Mount Washington Avalanche Center participated in a search for a missing hiker. Agencies involved included the NH Fish & Game, Mountain Rescue Service and Androscoggin Valley Search and Rescue. Teams searched areas of “last known location”. The search was discontinued at the day’s end pending additional information.
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Some rocks, almost worth skiing. As always, the upper portion of the trail crosses active avalanche paths. Assess conditions carefully and travel one at a time. Avoid upper Trail in periods of elevated danger or active wind loading.
Packed powder from Hermit Lake to parking lot
Forest Order Closure in effect. Subject to penalty – CFR 12-63
The summer Lion Head Trail remains a preferred east side route to the summit over the Tuckerman and Huntington Ravine Trails, though watch for our recommendation towards the Winter Route that will come with additional snowpack development.
As those who attended ESAW and recent MWAC outreach events have heard, our forecast zones are changing this year. The primary drivers of this change are changing use patterns, a desire to be consist with the use of North American avalanche danger scale (and other forecast center messaging), and a desire to provide information to folks venturing into other aspects and elevations around the area. Beginning this year, we will provide an avalanche forecast for most of the Northern Presidential Range.
This is the final bulletin issued by the Mount Washington Avalanche Center for the 2017-18 season. It will remain in effect until complete melt out. Travel in the backcountry requires careful snow evaluation and mountain sense. Hazards due to snow and ice will persist until both are all gone. Summer snowstorms on Mount Washington are uncommon, but not unheard of. If venturing into the mountains, be sure to use all available resources to help plan your trip and make safe travel decisions.
Due to open glide cracks and undermined snow, the Tuckerman Ravine Trail is now closed in the Ravine between Lunch Rocks and its junction with the Alpine Garden Trail. This closure includes the Lip area, which presents numerous hazards to the recreating public and potential rescuers alike.
We are no longer issuing daily avalanche advisories for Tuckerman Ravine this season. We will continue to provide snowpack and weather information as conditions change. We are no longer monitoring conditions in Huntington Ravine, but similar hazards will persist there until snow and ice is gone. Temperatures at night will dip below freezing with daytimes […]
Cool weather will give way to an approaching warm front, though temperatures should remain somewhat cold through the weekend. The summit is forecast to remain below freezing today. Intermittent and partial cloud cover is forecast to continue through tomorrow. Saturday will also bring a chance of rain showers as temperatures warm by a few degrees. Wind today will gust to 90 mph but diminish by afternoon. Warming temperatures on Sunday may allow loose wet sluffing to again become a concern, but until then, the potential for icy refrozen snow makes long sliding falls a primary hazard. Cloud cover and a chance of showers makes Saturday not ideal for skiing. Sunday looks like a sunny day with soft snow. Glide cracks continue to grow and will soon result in closure of the Lip area.
High pressure will build into the region from Canada on Monday, keeping clear conditions until late in the week. Temperatures during the days will reach into the 40sF and nighttime lows will drop into the 30sF. Low pressure will move into the area late in the week bringing unsettled weather. Our springtime isothermal snowpack has generally reduced avalanche concerns to sluff management in steep terrain.
Rain and possibly thunderstorms on Friday will set up a clearing pattern for Saturday. Temperatures close to the freezing mark to start Saturday combined with wind speeds over 100mph on the summit may make a late start the right choice as winds may drop to a more reasonable speed later in the afternoon. Rain on Sunday will be followed by what looks like a good corn cycle next week with sunny skies, warm days and colder nights. An isothermal snowpack has reduced the concerns for large avalanches, though history has shown that intense periods of heavy rain can make the waterfall hole in the Lip do strange things no matter what the snowpack is. Sluff management should be a priority for skiers, in particular the first several of the day on each slope.
This past weekend was a perfect reminder of how fickle spring weather can be. Saturday’s crowds were delighted by sunshine and abundant spring snow while those who ventured up to the Ravines on Sunday found rain and sleet at mid elevations and 11.1” of new snow on the summit. With light and variable winds, this snow likely blanketed higher terrain. Lingering instability in the atmosphere Monday will keep temperatures around the freezing mark for another 1-3” of snow and sleet on the summit. Building high pressure on Tuesday will create a clearing trend into Wednesday along with increasing wind speeds and temperatures. New snow from Sunday will experience rapid warming over the forecast period. Those venturing into avalanche terrain should be aware of the potential for wet avalanches. While wet-loose sluffs may be slow moving, this sort of “push avalanche” can easily take a skier over a cliff or into a glide crack. New snow will also cover developing holes in the snowpack, making safe navigation that much more difficult.
Over two inches of rain and temperatures into the 40’s and 50’s over the past two days in the Ravines has consolidated the snow but has done little damage to the ski gullies in Tuckerman Ravine. A few lines such as the skier’s right fork of Hillman’s have shrunk into the barely skiable category but the Lip and most of the other main lines are still full with snow. Glide cracks are just beginning to emerge. Huntington’s ice climbs were damaged but still passable, though continued warm weather will make these increasingly sketchy due to undermining of the remaining ice and loose rocky topouts. The weather forecast is continuing to favor those with flexible work schedules and punish the 9-5ers. Rain will return Friday night and in the words of today’s MWObs forecaster “plague” the area through the weekend with rain shower activity. Warm temperatures remain in place through early Sunday which means flowing water and weak snow bridges will remain a problem especially in main watercourses. Periods of freezing temperatures may return briefly late Saturday night and more certainly Sunday afternoon and elevate the potential for slide-for-life conditions. Though icy, the Winter Lion Head Route remains the preferred option for summit hikers due to the fall hazard at the traverse near treeline on the summer trail. The lower section of the Sherburne Ski Trail is closed around the switchbacks of the Tuckerman Ravine trail, about ½ mile or 400+ vertical feet from the parking lot. In order to reduce erosion on the ski trail, please walk over to the Tucks trail and hike the rest of the way to Pinkham Notch.
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This website is provided through a partnership between the White Mountain National Forest and the White Mountain Avalanche Education Foundation. The avalanche forecast applies only to backcountry areas, not operating ski areas, and describes general avalanche conditions which vary locally. The avalanche information provided is the sole responsibility of the USDA Forest Service.