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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|Seward|Chugach State Park|Hatcher Pass|Other Regions| Photos | Date | Location | Observer | Avalanche? | General Observations |
|---|---|---|---|---|---|
| 1300838400March 23, 2011 12:00 | Other Regions - Raggedtop | Very hard, old windslab on top of well developed facets. Distinct area at the top of the facet layer was weakest. I expect these layers to become reactive given a big enough load on top. The slab i … | |||
| 1300579200March 20, 2011 12:00 | Other Regions - Hatch Peak (Hatcher Pass area) | This is the crown profile of the fatal Hatch Peak avalanche investigated the day after the slide. | |||
| 1300579200March 20, 2011 12:00 | Other Regions - Hatch Peak (Hatcher Pass area) | This is an approximation of the avalanche boundaries in the Hatch Peak avalanche accident. | |||
| 1300492800March 19, 2011 12:00 | Other Regions - ESE face of Hatch Peak | This avalanche is from outside our advisory area. March 19th, fatal human triggered avalanche on Hatch Peak, ESE facing. Estimated at 2-4' deep 200' wide running 1500', crown at ~4500' and 38deg with … | |||
| 1300492800March 19, 2011 12:00 | Other Regions - Hatch Peak | This avalanche is from outside our advisory area. March 19th, fatal human triggered avalanche on Hatch Peak, ESE facing. Estimated at 2-4' deep 200' wide running 1500', crown at ~4500' and 38deg with … | |||
| 1299888000March 12, 2011 12:00 | Other Regions - Turnagain Pass | This photo is attempting to show how a typical starting zone in the Turnagain Pass area looks. This west facing slope has a combination of the Thanksgiving rain crust, a sun crust, hard wind slab and … | |||
| 1299542400March 8, 2011 12:00 | Other Regions - Tincan | I triggered this minor 'push-a-lanche' descending the south side of Tincan. Southerly facing slopes are getting quite saturated, especially below 2500'. | |||
| 1299456000March 7, 2011 12:00 | Other Regions - Seattle Ridge | These point release avalanches were initiated by solar radiation near rocky outcroppings on steep slopes. If enough snow is gathered on their way down the mountain, the possibility exists for a ste … | |||
| 1299110400March 3, 2011 12:00 | Other Regions - Seattle creek, Big Chief | Natural avalanche on the left, snowmachine triggered on the right. Happened on 2-25, 2-26. Weak layer was facets above the Thanksgiving rain crust. | |||
| 1299024000March 2, 2011 12:00 | Other Regions - Seattle Creek, West | This snowmachine triggered avalanche (left) was triggered on Saturday, 2-26 during a day of strong wind. The trigger for the smaller avalanche is unknown. | |||
| 1298937600March 1, 2011 12:00 | Other Regions - Raggedtop | This large avalanche is likely a natural from the strong winds sometime between Feb 19th and 24th. SE facing at 4000' estimated at 400' wide and 1-4' deep. The crown is just visible under the ridge an … | |||
| 1298851200February 28, 2011 12:00 | Other Regions - February Wx Chart | ||||
| 1298764800February 27, 2011 12:00 | Other Regions - Silvertip creek, Twin tip | This D3 avalanche looks deceivingly small from the road. On closer investigation it has crown depths estimated at 8-10 feet. Vertical drop was over 3000 feet. Some broken trees found in the path we … | |||
| 1298764800February 27, 2011 12:00 | Other Regions - Silvertip creek, 2500 ft. | Well developed facet chains found below the Nov. 22 rain crust at mid elevations. These extremely weak layers are responsible for many of this season's avalanches. The possibility of future avalanch … | |||
| 1298764800February 27, 2011 12:00 | Other Regions - Silvertip, twintip | This D3 avalanche looks deceivingly small from the road. On closer investigation it has crown depths estimated at 8-10 feet. Vertical drop was over 3000 feet. Some broken trees found in the path we … | |||
| 1298678400February 26, 2011 12:00 | Other Regions - Fresno | This is a great example of a wind slab which developed and released well off the ridgeline due to strong winds transporting snow further down the leeward slope. Winds are currently loading in photo as … | |||
| 1298678400February 26, 2011 12:00 | Other Regions - N. ridge Butch, Summit | This crown profile was low on a natural avalanche on a NE aspect. Many other naturals were seen in the region on all aspects from the recent wind event. The wind slabs at the ridge tops were clearly … | |||
| 1298678400February 26, 2011 12:00 | Turnagain - Tincan | ||||
| 1298592000February 25, 2011 12:00 | Other Regions - Lipps N. Face | Wind plume from south wind blowing across Lipps ridge. Measured gusts on Cornbiscuit at mid 30s. | |||
| 1298592000February 25, 2011 12:00 | Other Regions - Magnum | Raised tracks after strong wind event. Produced by wind eroding the softest snow away from stronger tracked snow. | |||
| 1298505600February 24, 2011 12:00 | Other Regions - Tincan trees, N. of skin track | Most reactive layer, buried surface hoar at 119cm. Not very concerning at this location/elevation. Lots of faceted forms in the snowpack. | |||
| 1298332800February 22, 2011 12:00 | Other Regions - Seattle Ridge | These avalanches were thoroughly wind scoured afterward, making their individual tracks virtually impossible to differentiate from other wind affected snow. The wide propagation near the ridge, and … | |||
| 1298246400February 21, 2011 12:00 | Other Regions - Seattle Ridge- Near Uptrack | This soft slab likely failed Sunday night or Monday morning, and ran very far downhill. Another slab broke loose to the left of this one later on Monday afternoon. If you look closely at this pictu … | |||
| 1298246400February 21, 2011 12:00 | Other Regions - Magnum | Winds on Monday kicked up large amounts of low density snow in our entire region, creating new wind slabs in many places. The wind direction was very sporadic, and changed course several times duri … | |||
| 1298246400February 21, 2011 12:00 | Other Regions - Twin Peaks NW Bowl | This natural avalanche failed sometime over the past few days, but we are unable to be certain when due to recent low visibility. Likely trigger was wind-transported snow onto this leeward aspect. … |
