Tuckerman Ravine – Rapid Warming & Roller Balls

March 14, 2019
By Jeff Fongemie – Mount Washington Avalanche Center

Warm day with occasional high thin clouds and a light wind. 34F on the summit when this picture was taken. Felt much warmer in the ravine. Top 8 to 10 cm of snowpack moist/wet, roller ball activity increased through the afternoon on south, south east . . .

Loose Wet slide almost catches two people

March 14, 2019
By Sean Lorway – Synnott Mountain Guides

Huntington was in full sun all day today.
Roller balls began being observed after 12pm – the two skiers were in ski track below Yale when the slide started (originating in Yale) gave them a pretty good scare- we heard it before we saw it.

Skier Triggered Slide

March 10, 2019
By Ryan Gibbs

Slab was firm pencil to knife hardness first run at 930am . Snow intensified to 1”/hr. Roughly 2” accumulation + wind deposit. Sluffing off of the ice below crux resulted in 20-30cm pockets. Second hiker on third run triggered a small R2, D1 slide . . .

Gulf of Slides Main Gully

March 10, 2019
By Mike Donovan

12″+ loose snow wind slab with 2″ firm crust on top. Sitting on firm smooth layer that was observed to be exposed in the center of the chute.

Avalanche Observation, Tuckerman Ravine

March 8, 2019
By Helon Hoffer – Mount Washington Avalanche Center

Around 1pm, a skier triggered an avalanche on the steep skier’s right wall of Right Gully (HS-AS-R1-D1). This is a common spot for skiers to trigger avalanches in Right Gully because of the steep slope angle and the aspect of the slope changes from . . .

Wind slabs and surface conditions on the East side

March 7, 2019
By Frank Carus

Wind slabs distributed widely through the terrain and mixed in with enough hard snow to complicate booting and skinning. Clean shears observed in the new 5″ thick wind slab formed over the past day or two led a party to bail in the approach to . . .

Natural avalanches in GofS

March 6, 2019
By Sarah Goodnow

I found new debris in the bottom of Gully #1 and Gully #2. There was none in the south snowfield and I did not travel in any area north of #2. Debris in both gullies was wind affected but with some chunky wind slab evident. Debris pile in #1 was . . .

Huntington Ravine

March 5, 2019
By Jeffrey Fongemie – Mount Washington Avalanche Center

4″ of new snow overnight, several hours of W-WNW wind @ 50-70 mph. Moderate results withstability tests in the new wind slab, but overall a mix including pockets of new wind slab and old bed surface. Frozen boot prints from before this recent snow . . .

Tuckerman Ravine

March 5, 2019
By Jeffrey Fongemie – Mount Washington Avalanche Center

Moderate wind last night had a strong effect on the 4″ of new snow that fell Sunday night into Monday. We encountered a stout skin of firm wind slab over soft snow in the Little Headwall that was reactive under ski, complete with shooting cracks and . . .

Huntington Ravine, reactivity between recent layers

March 4, 2019
By Ryan Matz – MWAC

Some new slab development and small avalanche activity as of this morning, before the wind increase. Numerous D1 natural slab and loose dry slug releases, with the largest from the Northern gullies. We were able to initiate a small slab (~3” thick) . . .

ABOUT THESE OBSERVATIONS

Snowpack observations are one part of the complex puzzle which is your decision to enter avalanche terrain. Some observations may include stability tests. It’s important to understand that the results of a stability tests are seldom conclusive anywhere, but particularly in snow climates and terrain like ours where the primary driver of instabilities is wind drifted snow. Many stability tests exist and each works best with specific avalanche problem types. Stability test results should never be used alone as an indication that a slope or conditions are safe particularly when more obvious red flags are present. Please use this page as part of your information gathering process, but don’t make decisions based on a single piece of information. A good article that summarizes some of the issues associated with snow and avalanche observations can be found here.

The Mount Washington Avalanche Center cannot verify the quality or accuracy of any observations that come from the general public.

SUBMIT YOUR OBSERVATIONS

See an avalanche or evidence of previous avalanche activity?  Near-miss? Snowpack observations?

Your observations are valuable to an accurate forecast! We welcome observations from everyone. You don’t need to be an avalanche professional to submit helpful observations, just be as detailed and accurate as you can.