Hillmen’s skier triggered Inconsequential

March 3, 2019
By Nicole Ponte

Snow started off firm on bootpack up and softened as I made progress higher. On descent, was quite soft. Saw a few others bootpacking up and was questioning my next move and side slipped to skiers left when I saw a crack propagate. Yelled avalanche . . .

Human triggered avalanches, Tuckerman Ravine Headwall

March 3, 2019
By Ryan Matz – MWAC

2 human triggered avalanches in the Headwall of Tuckerman Ravine this morning, both soft new wind slab. Chute: SS-ASu-R3-D1.5-I, Lip: SS-AFu-R3-D1.5-I. Both crown heights up to ~16”, mostly thinner. No one caught or carried.

Gulf of Slides

March 3, 2019
By Jeff Fongemie – Mount Washington Avalanche Center

~1″ of new snow overnight on WNW wind drifted to 3″ of soft snow in the GOS. Snow was light with almost enough density to keep skis from feeling the firm (P) bed surface below in most places, almost. Crampons necessary for the climb. Shiny bed . . .

Dodges Drop

March 3, 2019
By Chris Moran

New snow was reactive. Skier slough from first few turns triggered small wind slab that ran past ice bulge. 4-8″ crown, about 20ft wide. Perhaps R2 D1

Variable conditions on the west side

March 2, 2019
By Ryan DeLena

Our trip to Ammo was rather interesting today, with a fair amount of surprises. As we skinned up, snow conditions in the bushes areas below varried from step to step. We left the main drainage and began skinning up the south basin of Ammo, which . . .

winter lions head 5000 ft

March 2, 2019
By riley biro

slope angle 25
115-105CM 1F
105-25CM P
25-15CM K
15- bottom of pit P
SS Q2 @ 75CM
climbers in boot pack didn’t post hole or fracture surface layer

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.

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.