Gulf of slides wind slab

February 16, 2019
By Sean Murray

Ski jump test over pit, 1 foot slab with fractures extending past pit

Large avalanche in Hillman’s Highway

February 14, 2019
By Frank Carus

Observed HIllman’s runout from the Tucks trail late in the day on Thursday the 14th but wasn’t safe to approach the runout until Friday the 15th. Some blocky debris in the dogleg appeared hard but a closer look on Friday revealed mostly softer debris . . .

Natural Avalanche Evidence South of Lions Head Rock, Tuckerman Ravine

February 6, 2019
By Jeff Fongemie – Mount Washington Avalanche Center

Snow slope under and south of Lions Head Rock in Tuckerman Ravine. Broken small trees, debris heavily weathered and visually subtle. Elevation 4250 ft, slope angle 36 deg, facing 186 deg S. Timing is a guess, but may have ran during the snow-wind . . .

Avalanche debris pile bottom of left gully on Mt Mansfield

February 4, 2019
By John Stafford

Lots of recent snow, a small amount of icing last night followed by warm temps. I believe this to be natural but it’s possible it was human triggered before I got there. I did not see any evidence of this but the debris was huge and it was tough to . . .

Wet slabs low elevations

February 4, 2019
By Matt Shove – Ragged Mountain Guides

low elevation wet slabs releasing naturally due to warm and wet surface snow over rain crust.

Wet loose avalanche activity

February 4, 2019
By Ryan Matz – MWAC Forecaster

Wet loose debris observed in South and Odell Gullies of Huntington Ravine and Hillman’s Highway. Particularly in South and Odell, these were relatively debris piles for sluffing but still D1 so likely unable to bury a person. All appeared to be skier . . .

Ammonoosuc Ravine drainage, shallow snowpack

February 2, 2019
By Ryan Matz – MWAC Forecaster

Shallow snowpack and soft snow in lower Ammo terrain, with wind slab, wind textured snow, and scouring observed above 4000’. Pockets of softer and less stubborn wind slab can be found, but the recent storm snow is variable in regards to recent wind . . .

Gulf of Slides snowpack

February 2, 2019
By Helon Hoffer – Mount Washington Avalanche Center

We toured to about 4500′ into the Sandbox in Gulf of Slides. The surface was a mixed bag of melt/freeze crust, supportable wind slab while skinning, and soft snow. After returning to the first aid cache, we ascended to a similar elevation in Gully#1. . . .

Natural avalanche activity in Huntington Ravine

February 1, 2019
By Frank Carus

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 . . .

Natural avalanche evidence, Tuckerman Ravine

February 1, 2019
By Ryan Matz – MWAC Forecaster

Crown lines visible in Sluice, Lip, Center Bowl, Lower Snowfields below Duchess, hanging snowfield in Empress above lower snowfields. All suspected to have avalanched naturally some time between Wednesday night and early this morning. Active wind . . .


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.