Ammonusuc Ravine Natural

March 1, 2019
By Mike Lackman

Appears to be a natural. We didn’t get high enough to get a close look as the surface was pencil hard in exposed terrain. Some soft turns were found in the woods though. Flume and Silver Cascade both had pockets of 4F however those are few and far . . .

Tuckerman Ravine

March 1, 2019
By Frank Carus

The half inch of snow that fell on the summit Thursday blew in nicely on lee slopes. Soft snow is tucked into slopes here and there though firm snow beneath looked like it made the drop ins very exciting. Lots of firm snow in general, crampons would . . .

GOS Gully 2

March 1, 2019
By Jeff Lane

In the gully was quite stable bed surface from previous avalanching. We climbed and dug outside the track on the skiers left side. I found stability to be fair to good in our location (i.e. what you might call a pocket of moderate in a low . . .

Hitchcock Gully Obs.

February 28, 2019
By Mike Lackman

Hand shears from lower Hitchcock below the rock step. All initiated while forming the block in pencil hard snow roughly 10 and 20 cm down.

Wind scouring in the top of Central Gully, Huntington’s

February 28, 2019
By Michael Lehner

Wind scouring at the top of Central Gully was so extreme that what snow was remaining was extremely firm and there was exposed water ice at the top of the gulley just before you top out (where there normally is just snow).

Observation Mt Willard Hitchcock/East Face

February 27, 2019
By Matt Shove – Ragged Mountain Guides

Overall, firm, knife hard surface from the tracks to the base of the upper lower Gully.
Obvious loading below the rock step, however it was largely unreactive.
I was able to get repeatable hand shears just below the rock step with moderate . . .

Natural Avalanche Raymond’s Cataract

February 26, 2019
By Jeff Fongemie – Mount Washington Avalanche Center

Natural avalanche occurred during the February 25 storm. 8.5″ snow & sustained high winds.
Crown estimated to be 3′ tall, 200 feet wide and very low with respect to the whole slope of Raymond’s Cataract.

Natural Avalanche Lower Snowfields

February 26, 2019
By Jeff Fongemie – Mount Washington Avalanche Center

Natural avalanche occurred during the February 25 storm. Heavily refilled and eroded. Visible crown line 2″. The shape of the crown suggests that it may have extended to lookers left under Dutchess and also some signs of it to lookers right around . . .

Huntington Ravine Post Storm

February 26, 2019
By Jeffrey Fongemie – Mount Washington Avalanche Center

Day after the February 25 storm. 8.5″ snow & sustained high winds. 

Mt Willard 20190224

February 24, 2019
By Matt Shove – Ragged Mountain Guides

Lots of wind transport occurring. Found 4Finger stiffness slabs developing mid day in the open, some reactivity with hand shears and a shooting crack across the surface. I would suspect Hitchcock Gully could be pretty exciting post snow/wind event. I . . .


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.