Cornices
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–6
Cornices weaken with daytime warming and become more likely to fail.
Avalanche forecast
View on mapCariboos
Apr 1 – 2, 2013Avalanche Canada
Archived · expired 13 years ago
Avalanche danger
Wed
Thu
Alpine
1 · Low
Treeline
1 · Low
Below
1 · Low
Highlights
Avalanche problems
Loose Wet
NNEESESSWWNW- Alpine
- Treeline
- Below treeline
- Likelihood
- Likely
- Size
- 1–4
Loose wet avalanches are running on solar aspects if there is intense radiation during the heat of the day. Wet slab avalanches are also possible, particularly on solar aspects where buried crusts exist.
Confidence
Fair - Timing, track, or intensity of incoming weather is uncertain on Tuesday
Weather Forecast
Tuesday: Light to locally moderate snowfall / Moderate west winds / Freezing level at 1700mWednesday: Overcast skies / Light northwest winds / Freezing level at 1700mThursday: A high pressure system builds promoting clear and dry conditions with light westerly winds and 1800m freezing levels.
Avalanche Summary
Natural wet-loose avalanches up to Size 2.5 continue to be reported from throughout the region on solar aspects. Isolated cornice releases up to 2.0 have also been reported.
Snowpack Summary
Clear, warm days and cold nights have brought spring's daily melt freeze cycle to the surface snow on sunny aspects into the alpine and all aspects at lower elevations (below 1800m). On high shaded terrain surface hoar is growing, and warm temperatures have promoted settlement within the upper snowpack. Cornices are huge!The March 10th surface hoar/crust interface is buried more than 100cm in most places. Although unlikely to trigger, this deep persistent weakness remains a concern because of the potential for very large avalanches particularly with heavy triggers such as cornice falls or lighter triggers on solar aspects where the crust is more prevalent.Below this the snowpack is strong and well settled.