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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
1238112000March 27, 2009 12:00Outside of Advisory Area - SunburstSimilar location to the avalanche that occured on Sunday 3/22/09. We dug a crown profile and confirmed the failure layer was the facets on top of the January "Hurricane" rain crust, just like we h …
1237852800March 24, 2009 12:00Outside of Advisory Area - SunburstWe saw this small avalanche on Tuesday 3/24/2009. This avalanche is still big enough to knock you over, take you for a ride, and bury you if there is a terrain trap at the bottom. We are not exac …
1237852800March 24, 2009 12:00Outside of Advisory Area - Tincan NW AspectThis avalanche occurred at 1800 feet on a northwest aspect of Tincan not far from the skin track. We're guessing it occurred sometime Sunday 3/22. It failed on the buried surface hoar that formed …
1237680000March 22, 2009 12:00Outside of Advisory Area - unknownThis avalanche was remotely triggered on Sunday 3/22 by some folks digging a snowpit a short distance away. The slope angle was estimated to be in the low 30's. The avalanche occured on a west as …
1237593600March 21, 2009 12:00Turnagain - Cornbiscuit South AspectThis small avalanche (potentially skier triggered within the past few days) was observed while skinning up Bertha Creek. Starting elevation ~3200', ~30-40' wide, slid ~600' nearly to the valley. T …
1237507200March 20, 2009 12:00Outside of Advisory Area - 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 12:00Outside of Advisory Area - 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 12:00Outside of Advisory Area - 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 12:00Outside of Advisory Area - 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 12:00Outside of Advisory Area - 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 12:00Outside of Advisory Area - Warm Up Bowl Ridge (zero bowl
1237507200March 20, 2009 12:00Outside of Advisory Area - 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 12:00Outside of Advisory Area - 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 12:00Outside of Advisory Area - 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 12:00Outside of Advisory Area - 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 12:00Outside of Advisory Area - Headwaters of Lyon CreekRecent cornice break on a west aspect at approx. 3500-3800 feet elevation.
1237075200March 15, 2009 12:00Outside of Advisory Area - 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 …
1236988800March 14, 2009 12:00Outside of Advisory Area - 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 12:00Outside of Advisory Area - 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 12:00Outside of Advisory Area - 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 12:00Outside of Advisory Area - 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 12:00Outside of Advisory Area - 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 12:00Outside of Advisory Area - Sunburst W Aspect
Showing 2551 - 2575 of 2690 items
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