Sea to Sky, British Columbia

Latest Forecast Issued 18 hours ago
Danger Ratings Alpine Low Treeline Low Below Treeline Low Problems An icon showing Cornices


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User submitted observations from the field: trip reports, avalanche sightings and conditions observations.

Chocolate Bowl/Mount Fee 12 hours ago Observation - We experienced no obvious signs of current instability. - Eroded snow or stiff wind slab - 10cm new or transported snow on leeward slopes 2 photos Friday January 22nd Avalanche Canada, 18 hours ago Forecast Thursday January 21st Avalanche Canada, 1 day ago Forecast Fast travel at Brandywine 2 days ago Observation It was our last day of exploring the area for the deep persistent avalanche problem, now removed from the bulletin. We saw some large avalanches that released on deeply buried weak layers but they were all likely from over a week ago. 3 photos Wednesday January 20th Avalanche Canada, 2 days ago Forecast Tuesday January 19th Avalanche Canada, 3 days ago Forecast AST2 coast mountain guides 4 days ago Observation Rode north and ssw slopes ECT P 26 55cm down on December crust 1-2mm facets 2150m, 33deg slope, sunny, air temp -1c, 12:30pm, wsw aspect RB6 on December crud facet 55cm down Monday January 18th Avalanche Canada, 4 days ago Forecast Tantalus 4 days ago Observation From Squamish Valley road, saw and size 2.5-3 on the slope of Mount Tantalus 1 photos Gin Peak 5 days ago Observation Avalanche observation by tyler.l.knowles, seen near Sea to Sky, reported on Sun 17th Jan, 2021 12:30PM Mt mulligan 5 days ago Observation Dust on crust. 10cm of fluffy snow on a 10 cm crust. The crust failed surprisingly easily with a couple hand taps. Some minor cracking was observed. 2 photos Shannon Basin 5 days ago Observation 10cm of new snow on a 10cm crust. A second thinner crust was 10cm bellow that. No/little sluffing but sidehilling was very difficult due to the new snow not bonding to the crust. 2 photos Sunday January 17th Avalanche Canada, 5 days ago Forecast Stadium Glacier 5 days ago Observation We dug a pit and found a 3cm crust on top of 10cm of icy rain crust. Snow underneath these layers was wet. As we went higher to 1700m the surface crust became very hard and icy with no ski penetration. 3 photos Spearhead Glacier 6 days ago Observation Guides Notch, NNE facing, 2325m Depth Snow >370cm 0-45cm 1F 46-60cm 4F 61-110cm 1F 110-115 4F CT Moderate (18) @ 90cm, resistant planar but slid well, ? decomposing stellars 1 photos Disease ridge- Body Bag Bowl 6 days ago Observation ECT at Body bag bowl 2170m SE ECTP15 - Facets on the crust. 1 photos Saturday January 16th Avalanche Canada, 6 days ago Forecast Blackcomb Backcountry 6 days ago Observation Had a nice tour of Cham 2, Vista, Chisel and Poop Chutes. Very firm all around but not much for ice. Actually pretty fun chalk skiing in all the chutes. Belayed a ski cut on chisel and couldn't get anything to move. Pretty much everything that could have avalanched seemed to in the last cycle. 1 photos Decker 9th Hole 210115 1 week ago Observation Over the previous 18 hours, another cornice fall from Decker initiated a size 1.5 avalanche over the previous size 3 on the 9th Hole. S winds continue to transport snow extending cornices to the north. 1 photos Decker zone 1 week ago Observation Highly wind effected surface at ALP & exposed TL areas. Lower sheltered at TL & BTL upper snowpack moist. CTH23 down 24 RP - 2112m CTH25 down 56 RP - 2112m Deep tap test on MFC/FC layer - no result Propagation saw test MFC/FC - no result 2 photos Paul ridge 1 week ago Observation Avalanche observation by J0J0, seen near Sea to Sky, reported on Fri 15th Jan, 2021 1:00PM Gin Peak Wet Snow on Crust 1 week ago Observation Fogged in all day. It was windy at the summit but quite calm at lower elevations. 2 photos Friday January 15th Avalanche Canada, 1 week ago Forecast Hanging Lake 1 week ago Observation • Observed a 5+ cm rain crust at 1500m. • Observed wide spread natural avalanche cycle (storm slab + wet loose) above and around the lake on all aspects. 3 photos Thursday January 14th Avalanche Canada, 1 week ago Forecast Decker 9th Hole 210114 1 week ago Observation On 210109 we observed that a portion of the summit cornice over 9th Hole had cleaved and was drooping. The following day it was in place and drooping more. 1 photos Cowboy Ridge Natural Sz 2 1 week ago Observation Observations from Harmony Ridge. Natural avalanche on Cowboy Left 2 photos Wednesday January 13th Avalanche Canada, 1 week ago Forecast Tuesday January 12th Avalanche Canada, 1 week ago Forecast Mt. Sproatt 1 week ago Observation Slab avalanches released on steeper roll-overs at and above tree line. Lots of tree bombs below the freezing level but no evidence of any slides within the trees. Round Mountain snowpack 1 week ago Observation -Compression Test Results- CTE 2(RP) down 19cm on new snow, density change. X2 CTE 3(RP), 4(RP) down 34cm on new snow, density change. CTM 12 (RP) down 65cm on decomposing precipitation particles. -Deep Tap Results- DTH 30(RP) down 200cm on rounding facets over December 9th crust. AST-2 Day 4 Oboe Basin 1 week ago Observation Three tests profile at 1730m on E aspect on 21 degree slope in open glaze at tree line with some wind loading. CTE down approx. 30cm bellow recent HST. Two out of three tests showed no result on Dec. 9 PSL. One test resulted in DTH 27 down to 180. 255cm snowpack failure depth. 1 photos Slide at tricouni 1 week ago Observation 45 degree slope on an eastern aspect below a cliff, looks like it slid naturally very socked in, took a picture but you can’t make anything out, we could not see the north side of the slide from the south side, very heavy, wet snow. Monday January 11th Avalanche Canada, 1 week ago Forecast Disease Ridge 1 week ago Observation Overall the storm slabs seem to be bonding with a right side up snowpack. We observed the Dec 9 weak layer but with no propagation. Mulligan Snow Pit 1 week ago Observation Dug a 2m deep pit on the wind loaded west face of Mulligan summit ~30° slope. ~25cm soft snow (fist) on top of 1m denser snow (1-2 fingers), some thin crusts through that section of snowpack. 3 photos Sunday January 10th Avalanche Canada, 1 week ago Forecast Gin Peak 1 week ago Observation Saw 2 small glide cracks on north face of gin, but no whumphing or signs of avalanche 1 photos Gin Peak 1 week ago Observation Some small sluffs seen on steep slopes around start zones but no other obvious instability signs observed SPLITFEST / Round Mt 1 week ago Observation Very touchy layer of facets or hoar at 60cm multiple CT tests had reactions between 3 - 12. SP / SC. CT RP medium results at 35cm. ECT produced no result Snowpack depth at pit was 320cm tested to 120cm. 28 degree slope. 1 photos Brohm 1 week ago Observation Alpine slopes were wind scoured to the west-southwest. Cowboy Ridge Avalanxhe 1 week ago Observation Avalanche observation by joepeplowski, seen near Sea to Sky, reported on Sat 9th Jan, 2021 3:15PM 9 photos Cowboy ridge 1 week ago Observation Avalanche observation by benbloom88, seen near Sea to Sky, reported on Sat 9th Jan, 2021 3:30PM 2 photos Callaghan 1 week ago Observation Went for an exploratory tour into the alpine today. Stuck to mellow slopes. No evidence of recent avalanche activity. Alpine was quite wind affected which produced pockets where a 20cm slab pulled off easily in a hand pit. Best skiing was sheltered areas below 1600m and at treeline. 2 photos Metal Dome Area 1 week ago Observation At and around treeline (14-1600m in this area), there's a buried layer -- likely from the warm tail end of Wednesdays storm -- about 20cm deep. Widespread wind affect with pockets of slab on the lee side of small terrain features. Black Tusk 1 week ago Observation Went up to ski south slopes of Black Tusk. Some surface hoar was noted in the morning from the cold temperatures but it's growth was stunted due to solar effect. No major avalanche problems noted on the way up. On S aspects in the alpine there was significant wind scouring. 2 photos Gin peak 1 week ago Observation CTM16 down 33 SP CTH22 down 44 RP Air temp -4 Snow temp 10cm -9 20cm -7.7 30cm -6.9 40cm 5.9 50cm 5.4 60cm 5.0 70cm 4.9 80cm 4.3 90cm 4.4 100cm 4.5 Detected several layers using a card to swipe down the snowpack. 13cm 4F NS 22cm 1F DF 40cm 1F DF 55cm 1F+ DF 81cm Pencil DF 1 photos Splitfest - Decker Lake tour 1 week ago Observation Mellow alpine tour around Circle, Decker Lakes and back over Disease. Variable snow conditions at all elevations we skied - wind slab around 5-10cm. Most aspects wind affected in alpine. No signs of instability today - brief sun appearance in the AM with ridge top winds picking up early afternoon. Brandywine 1 week ago Observation No signs of the instability. Approximately 20cm of light unconsolidated powder in open areas. Further down the snow pack was firmer but didn’t feel any crust. Anif and Mulligan 1 week ago Observation South facing slope of mulligan was heavy from solar radiation at 10am 2 photos Saturday January 9th Avalanche Canada, 1 week ago Forecast Anif, North 2 weeks ago Observation Snow start at 550m on the logging road. Disease Ridge/Decker (Splitfest) 2 weeks ago Observation Toured up disease ridge on a cold morning after minimal new snow in the last 24 but after the recent storm cycle. Release small slabs on the steepest terrain where we tested. 10cm slab release, small slide under 0.5, no shooting cracks or issues. 4 photos Friday January 8th Avalanche Canada, 2 weeks ago Forecast

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