Natural Avalanche, Hillman’s Highway, Tuckerman Ravine

January 11, 2019
By Jeff Fongemie – Mount Washington Avalanche Center

Naturally triggered avalanche occurring likely Wednesday evening, January 9 or possibly January 10. Looking up the gully, start zone obscured by blowing snow. Debris heavily wind affected. It appears that the avalanche ran from above the Christmas . . .

Avalanches in and around Tuckerman Ravine

January 11, 2019
By Frank C

Signs of widespread avalanche activity some of which was large, following snow and wind during the past few days. Observed wind scoured debris in the following locations:
Lobster Claw – D2
Floor (from Headwall) D4
Left Gully D2
Duchess D2
Empress . . .

Wildcat year slope

January 9, 2019
By Ben – Acadia Mountain Guides

4000” due east aspect, test slope next to the patrol shack. I ski cut the slope with shooting cracks and a big slump. The stanch wall broke and developed. But the slope stop before it enter gliding motion.

Huntington Ravine Photos

January 7, 2019
By Helon Hoffer – Mount Washington Avalanche Center

Surface of the snowpack consists of old melt-freeze crusts, older wind slab and wind slab that formed yesterday from 5″ of snow combined with high wind.

Natural avalanche, Center Bowl, Tuckerman Ravine

January 7, 2019
By Ryan Matz – MWAC Forecaster

Naturally triggered avalanche, suspected occurrence late Sunday 1/6 or early today. Crown partially refilled by wind loaded snow, debris heavily wind affected. As seen in the picture, a line just below the ice and above the prominent crown line may . . .

Gulf of Slides, widespread firm wind slab

January 7, 2019
By Ryan Matz – MWAC Forecaster

Varying hardness (1F-4F) new wind slab, relatively smooth and consistent except in upper portions of terrain where scouring occurred. With incoming snow and wind, it’s worth noting this widespread smooth and firm nature as a potential avalanche bed . . .

West side upper elevations, widespread scouring

January 5, 2019
By Ryan Matz – MWAC Forecaster

While east facing ravines hold large areas of recently wind loaded snow, upper elevations on the west side of the Presidential range seem largely scoured to a crust. In many areas, that crust is the 12/22 rain crust that is nearly impenetrable with a . . .

Huntington Ravine, reactive wind slab and scouring

January 4, 2019
By Ryan Matz – MWAC Forecaster

Variable upper snowpack- Pockets and larger areas, particularly in Central, Pinnacle, and especially Odell, of recently formed wind with significant areas scoured to hard, supportable crust.
Wind slab was touchy though thin and small in observed . . .

Avalanche Observations in Tuckerman Ravine

January 4, 2019
By Helon Hoffer – Mount Washington Avalanche Center

On touring into Tuckerman today, we noted the following activity:
SS-N-R1-D1.5 in Center Bowl of Tuckerman. This likely occurred 1/3/18. We think so by the amount or reloading that took place. This may have been triggered by very small dry-loose . . .

Avalanche Observation in Left Gully

January 3, 2019
By Helon Hoffer – Mount Washington Avalanche Center

We observed debris in the far looker’s left runout of Left Gully.
L-N-R1-D1.5
Loose snow avalanche, naturally occurring (probably this morning), very small relative to path (though just a guess as visibility was very poor and we could only see 200 . . .

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.