Natural avalanche activity in Huntington Ravine

By Frank Carus

Date of Observation: February 1, 2019  11:20 AM
Location of Observation:

Widespread natural cycle in Huntington Ravine including below Harvard Bulge. 1-2’ x 200’ crown still visible just below the ice with chunky debris remaining visible low down almost to the floor. Old debris also visible below South, with small blocky debris on the floor. More eroded debris also just visible beneath Escape Hatch and possibly Odell,the first pitch ofwhich is fully buried in wind slab again. Ice in Central is covered with lots of snow filling the upper part of the gully as well as above the Fan. Approach to Pinnacle looks full of new sluff/wind slab. Northern gullies Low danger with snow mostly blown off or packed into stubborn looking slabs. Sastrugi high in other gullies and smooth wind slabs lower fit the profile for Moderate avalanche hazard with large wind slabs that will likely be stubborn to human trigger. Wind loading continues on gusts.


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.


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.