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Observations

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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.

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PhotosDateLocationAvalanche?General Observations
1237507200March 20, 2009 12:00Other Regions - Main BowlStill finding hard failure in facets slightly above January Hurricane rain crust. I also saw a layer of very decomposed buried surface hoar at about 1.5 feet (55 cm) deep where the failure occured …
1237507200March 20, 2009 12:00Other Regions - Warm Up BowlSun crust was about 1 inch thick and it broke very easily underneath. It already has very bad temperature gradient which will most likely grow facets underneath. Plus, there is surface hoar on to …
1237507200March 20, 2009 12:00Other Regions - Bartlett GlacierNot sure when this natural avalanche happened, but I'm guessing at the tail end of the St. Paddy's Day storm based on the clean fracture line.
1237507200March 20, 2009 12:00Turnagain - Magnum West Aspect 1800'
1237507200March 20, 2009 12:00Other Regions - A-1 SE AspectThe trigger was a skier "body-bomb". This happened around 2500' elevation on a SE aspect in the upper Winner Creek drainage.
1237507200March 20, 2009 12:00Other Regions - Max's SW AspectI dug this snowpit at 2400 feet on a SW aspect. The total snowpack depth at this spot was only 4.5 feet. I got moderate Q2 shears on the facets above the January rain crust (16" down) and underne …
1237507200March 20, 2009 12:00Other Regions - Warm Up Bowl Ridge (zero bowl
1237507200March 20, 2009 12:00Other Regions - Warm Up BowlThis sun crust had surface hoar on top, and a very bad temperature gradient underneath which creates facets. It was already super fragile underneath.
1237334400March 18, 2009 12:00Other Regions - North Bench PeakThis avalanche was ski-cut and described as 3 feet deep and about 200 feet wide. It sounds like this was new storm snow that failed on the "glazed donut" layer. Thats the thin freezing rain crust …
1237334400March 18, 2009 12:00Other Regions - Twin PeaksWe saw this natural avalanche on Wednesday 3/18/09. The crown face still looks clean enough that I'm guessing it ripped out sometime Tuesday 3/17/09. I'm also guessing that this failed on the "gl …
1237161600March 16, 2009 12:00Other Regions - Tincan NW AspectThis is the fourth week I have dug in this spot as part of Ben's snow study plot. My compression test scores on the layer of facets above the January rain crust, now buried 63 cm deep (2 ft), incre …
1237075200March 15, 2009 12:00Other Regions - Center RidgeThis is a cross-section of snow from 2,000 feet on Center Ridge where the snow collapsed locally. Joe's finger is pointing to the top of the rain crust. The snow collapsed on the facets above the r …
1237075200March 15, 2009 12:00Other Regions - Headwaters of Lyon CreekRecent cornice break on a west aspect at approx. 3500-3800 feet elevation.
1236988800March 14, 2009 12:00Other Regions - Southern Flank Pastoral PeakSeveral of our observers dug this pit at 3800 feet on a NW aspect at the head of Bertha Creek drainage on a southern flank of Pastoral Peak. Although they got collapsing at the lower elevations du …
1236902400March 13, 2009 12:00Other Regions - Pete's North (SW Aspect)Ben and I dug this pit at 2200 feet on a SW aspect. We found the January rain crust buried 1.5 feet deep. Our compression test scores on the facets above the crust were the lowest ones yet, a sig …
1236643200March 10, 2009 12:00Other Regions - Main BowlThe facets have developed a lot more in this pit compared to the last one at this location on 2/19/2009. The temperature gradient changed since that last pit. We've been watching this bad tempera …
1236556800March 9, 2009 12:00Other Regions - Pete's SouthThis snowpit goes with the photo from Pete's South. The photo shows a crack extended down to the Jaunuary Hurricane rain crust that you can see about 1 foot deep (40 cm) down in this pit profile. …
1236556800March 9, 2009 12:00Turnagain - Pete's SouthThis human-triggered crack on top of the January Hurricane rain crust suggests that this weak layer continues to show signs of instability.
1236556800March 9, 2009 12:00Other Regions - Tincan NW AspectThis is the third week I have dug in this spot as part of Ben's snow study plot. My compression test scores are still decreasing on the layer of facets above the January rain crust, still buried 50 …
1236384000March 7, 2009 12:00Other Regions - Sunburst W Aspect
1236384000March 7, 2009 12:00Other Regions - SunburstA widespread freezing rain crust formed the night of 3/4/2009 on all aspects from sea level to the ridgetops. It was easy to see today in the bright sunshine because it reflected like a mirror. T …
1236384000March 7, 2009 12:00Other Regions - Sunnyside E AspectThis small Class 1 slide (2800' E aspect) on the motorized side of Turnagain Pass most likely happened on Friday 3/6 during the wind event. It looks like it might have stepped down to another weak …
1236384000March 7, 2009 12:00Other Regions - Portage Valley SW AspectThis slide also occurred on Friday 3/6 during the wind event. It's on a SW aspect at approx. 2000 ft. in Portage Valley across from Moose Flats Day Use Area.
1236384000March 7, 2009 12:00Other Regions - Penguin Ridge NE AspectStrong to gale force winds on Friday 3/6 caused these avalanches at approx. 3000 ft. on a NE aspect in the California Creek drainage.
1236211200March 5, 2009 12:00Other Regions - SunburstThe Sunburst web camera had a bunch of snow on it when I checked this morning; so, we headed up there to clean it off and get some observations above 3500 feet. Turns out, it must have been frozen …
Showing 3601 - 3625 of 3735 items
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