Crack on ravine floor

April 22, 2019
By Mike Bergin

Didn’t know if important but seemed to be in the area of underground water flow.

Little Headwall Open

April 20, 2019
By Jeff Fongemie – Mount Washington Avalanche Center

Almost an inch of rain on the summit since the the precipitation began Friday evening. It’s been a good run for the Little Headwall this season, but it’s now open with lots of water moving though at 11:00 today.

Refrozen snowpack with heavy scouring of new snow

April 16, 2019
By Jeff Fongemie – Mount Washington Avalanche Center

Wet snowpack from rain Monday is firmly refrozen above 3800′. The ~ 1.6″ of new snow recorded on the summit yesterday has been reduced to thin islands of drifts low in both ravines, and are well bonded to the frozen surface. Poor visibility allowed . . .

Ice Fall Saturday

April 13, 2019
By Dick Huey

Massive chunk of ice peeled off on Saturday in the middle of the Ravine off the rocks during the ski day, started a lot of small sluff. We watched this happen live from Right Gully.

Left Gully observations

April 12, 2019
By Tom, A.J., Bill, and Chris

Overall we found the moisture had not saturated as deeply into the snow pack as we expected. A 20cm layer of saturated snow sat on top of an 18cm layer of softer drier snow. We had clean fractures on all tests with not identical but similar results. . . .

Multiple Slides in Oakes Gulf, 4/11/19

April 11, 2019
By Kurt Niiler

While the east side of Mt. Washington remained clear and calm throughout the day, consistent southeast winds made for steady wind-loading on isolated terrain features in the eastern half of the ravine and on the entire slope in the western half. The . . .

Oaks avalanches

April 11, 2019
By Ben Allen

At approximately 12:35 we watch a skier trigger an avalanche, it run about 200-400ft from somewhere in the airplane area of Oaks gulf. It was hard to see exactly what gully he was in. The skier appeared to be ok. We were skiing the Main Gully on the . . .

New Snow Scouring & Drifting in Tuckerman Ravine

April 10, 2019
By Jeff Fongemie – Mount Washington Avalanche Center

Foggy, poor visibility, unable to see up into gullies. Floor of the ravine a mix of drifted new snow up to 8 inches thick and scoured bed surface, which was refrozen by 1PM. The slabs seemed generally stubborn and better bonded to the bed surface at . . .

Moist snowpack in Huntington and Tuckerman Ravines

April 9, 2019
By Jeff Fongemie – Mount Washington Avalanche Center

Foggy, with intermittent/poor visibility. Traveling in Huntington Ravine fan I found all new snow that fell in the past 48 hours moist to the bed surface. New snow thickness varied from 1 to 6 inches, mostly closer to 1 or 2 inches. Wet avalanche . . .

Storm snow, Huntington Ravine

April 8, 2019
By Ryan Matz – MWAC

3” or so of slightly wind affected new snow mixed with sleet and graupel. S summit winds under 40 mph today seem to have resulted in a soft, thin, and barely cohesive layer of new snow. As pictured, this new layers is behaving like a slab in . . .

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.

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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.