Debris on South Aspect After Nor’Easter

November 30, 2018
By Frank Carus – Mount Washington Avalanche Center

D1 pile after wind loading event that followed 16” new snow over four days.

Stability tests in Monroe Brook

November 30, 2018
By Ryan Matz – Mount Washington Avalanche Center

CT11 Q1 35 cm down x2
ECTN12 35 cm down x2
HS 60

West side snow coverage 11/30

November 30, 2018
By Ryan Matz – Mount Washington Avalanche Center

Consistent weak layer ~5 cm above late November crust, identified via hand shears on aspects S-W-N at elevations 3000-5500’.
4F-F surface snow, with isolated firmer pockets of 1F-4F above 4500’

Avalanche in the Lip

November 15, 2018
By Helon Hoffer – Mount Washington Avalanche Center

R3D3 Avalanche in The Lip of Tuckerman Ravine, also took out Chicken Rock Gully. Maximum depth of crown appears to be 1 meter.


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.