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Observations

It is the personal responsibility of each user of CNFAIC to decide whether or how to use any information found here.

Skiing, snowboarding, snowmachining, hiking, walking, and all other methods of travel or recreation on snow are dangerous and a potential hazard to personal safety. Each person who ventures onto snow is responsible for his or her own safety. Many snow travelers find that education, information, and experience can increase their safety when they are on snow. The public observations reported on this site may appear to offer information about the safety of traveling or recreating on snow, but it is critical to remember that such observations are not evaluated or edited for accuracy and represent the subjective experience of the author.

Individuals may have widely differing perceptions, for a given location, date, and time, of the safety of traveling or recreating on snow, of avalanche hazards, and of skiing or snowboarding conditions. The hazards and conditions reported in an observation can change rapidly. In addition, individuals can differ greatly in both their perception of objective hazards and their acceptance of the risk to personal safety of these hazards.

Submit an Observation All Regions|Turnagain|Girdwood/Portage|Placer|Summit|Chugach State Park|Hatcher Pass|Outside of Advisory Area
PhotosDateLocationAvalanche?General Observations
1303689600April 25, 2011 12:00Outside of Advisory Area - Magnum - Turnagain PassThis wet slab looks to have been triggered by rollerballing or a small wet sluff riding onto the slab. West facing around 2500'. It released either on Monday(4/25) or Tuesday(4/26).
1303603200April 24, 2011 12:00Outside of Advisory Area - Seattle Ridge - SunnysideNatural wet slab avalanche. East facing ~2300', 300-400' wide. Looks to have failed near the ground and eroded to the ground easily as the heavy wet snow slide down the slope.
1303516800April 23, 2011 12:00Outside of Advisory Area - Mile 53This large wet slab avalanche released naturally around April 23rd. It was over 500' wide, estimated at 2-8' deep with the wet debris running over 2000'
1303516800April 23, 2011 12:00Outside of Advisory Area - EducationIsothermal: When all layers of the snowpack are at the same temperature, usually the freezing point. Often refers to a snowpack that is wet throughout its depth.
1303171200April 19, 2011 12:00Outside of Advisory Area - Bird RidgeThis is a photo of the fatal wet snow avalanche that entrained a person while glissading down a slope. Details about this accident are provided by AMRG and can be found on our accidents page.
1302912000April 16, 2011 12:00Outside of Advisory Area - April Weather Chart
1302825600April 15, 2011 12:00Outside of Advisory Area - TincanThis is a relatively small glide avalanche on the south face of tincan ridge. Thought to have released on April 14th or 15th.
1302825600April 15, 2011 12:00Outside of Advisory Area - Turnagain PassThis is one example of a few smaller wind slabs that were intentionally triggered on north aspects between 3000' and 4000'. Underneath was .5-1cm surface hoar. These were not widespread and more pocke …
1302739200April 14, 2011 12:00Outside of Advisory Area - Lynx CreekThis is a picture (marginal quality) of several avalanches that are suspected to have slid close to the same time on Thursday April 14th. This was during, or after, around 10" or more of snow fell tha …
1302566400April 12, 2011 12:00Outside of Advisory Area - Seattle RidgeThis wet slab avalanche failed at 2:00pm on 4/12 due to solar heating of the snow on this SE facing slope. It started off as a point release near some exposed earth, quickly gaining more snow as it …
1302480000April 11, 2011 12:00Outside of Advisory Area - Elevator Shaft - SunburstThe most concerning layer in this snow pit was a buried layer of surface hoar 48cm under the snow surface. However, it was not reactive to several skiers who previously traveled over this snow, down i …
1302393600April 10, 2011 12:00Turnagain - Tincan northwest faceSnow layer descriptions that are cut off in the image: 178-150: Snow from Thursday 4/7 150-147: 80 mph winds early Thursday 4/7 147-126: Snow from Sunday 4/3 126-121: 78 mph winds from Sunday 4/3 117 …
1302307200April 9, 2011 12:00Outside of Advisory Area - Hatcher Pass, $1000 Dollar RunOUTSIDE ADVISORY AREA - following observation sent in: Location: Steep North facing slope adjacent to "$1000 dollar run". Elevation: 4302' Aspect: N-NE (40 deg) Slope Angle: Estimated at 32 deg. Disc …
1302307200April 9, 2011 12:00Outside of Advisory Area - Hatcher Pass (outside advisoryThis hard slab avalanche was remotely triggered by skiers 50 - 100' away. Allie Barker observations day after slide: HS-ASr-D2-O Crown 10cm to 100cm deep about 1000′ wide, ran 600′. This …
1302220800April 8, 2011 12:00Outside of Advisory Area - Magnum - Turnagain PassThis soft slab was triggered by the second skier on a steep 300' long convex slope. A "crack" sound was heard as it released and the skier was able to ski off to the side. Southwest facing, ~200' wid …
1302220800April 8, 2011 12:00Outside of Advisory Area - Seattle Creek - Jrs bowlThis avalanche (west facing ~2000') was triggered by a snowmachine that was able to ride out of it. Considering the slope is only steep for 100' or so it did not run far, but is a great example of a c …
1302220800April 8, 2011 12:00Outside of Advisory Area - Harp - Eagle River areaOutside of our advisory area. This avalanche was triggered by a dog after two skiers had intentionally avoided a recent wind loaded pocket. The dog following far behind (both skiers were off the slope …
1302048000April 6, 2011 12:00Outside of Advisory Area - Seattle Creek - north facing WOn Wednesday, April 6th, a snowboarder triggered a 100' wide slab, 1'-3' deep that carried him 500'. He attempted to get out of the slide once it fractured, but caught a rock that broke his snowboard …
1302048000April 6, 2011 12:00Outside of Advisory Area - Tincan North faceThis natural avalanche is on the North face of Tincan. It broke sometime after the storm on 4-5 or 4-6.
1302048000April 6, 2011 12:00Turnagain - CornbiscuitThis avalanche from 4-6 was unintentionally triggered by a skier from the ridge of Cornbiscuit. It ran all the way to the valley floor. This avalanche is consistent with other results we've seen and …
1302048000April 6, 2011 12:00Turnagain - TincanSlab triggered from standard skin track 400 feet away. Party of 5 skiers felt a collapse and this 200 ft. wide avalanche popped. The group continued a few steps farther, felt more collapses and deci …
1302048000April 6, 2011 12:00Outside of Advisory Area - SunburstThis pit was on SW facing sunburst at 3200'. It had two failure planes, both fully propagating with clear sudden planar shears. You can see where the two slabs 'cash register' out on the right side of …
1301788800April 3, 2011 12:00Outside of Advisory Area - TincanThis is a 20' wide 14" deep soft slab that was skier triggered in the Tincan trees on a rollover around 1800'. Quite small and manageable but the heavy deep snow can easily push a person around.
1301749200April 2, 2011 1:00pmTurnagain - Eddy's, right around tree lineWhen we showed up to the parking lot it was snowing around S2-3 and stayed that way for most of the day. The picked up a quite a bit when we reached our high point, around 2200 feet, but was clam lo …
1301616000April 1, 2011 12:00Outside of Advisory Area - March Weather Chart
Showing 2551 - 2575 of 2974 items
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