Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Alta quota
- Limite del bosco
- Sotto il limite del bosco
- Probabilità
- Possible - Likely
- Dimensione
- 1–4
Recent strong SW winds have formed wind slabs in leeward features.
Bollettino valanghe
Vedi sulla mappaNorthwest Coastal
Apr 21 – 22, 2014Avalanche Canada
Archiviato · scaduto 12 years ago
Pericolo valanghe
Wed
Thu
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
In sintesi
Avalanche danger can rise quickly with afternoon warming and solar radiation. Be aware of changing conditions and overhead hazards.For more insight into spring danger ratings, check out this blog post.
Problemi valanghivi
Loose Wet
NNEESESSWWNW- Alta quota
- Limite del bosco
- Sotto il limite del bosco
- Probabilità
- Unlikely - Possible
- Dimensione
- 1–2
Loose wet activity can be expected from steep features during periods of solar warming or rain. Isolated wet slabs may be possible under the same conditions where the recent storm snow is poorly bonded to the underlying crust.
Deep Persistent Slabs
NNEESESSWWNW- Alta quota
- Limite del bosco
- Sotto il limite del bosco
- Probabilità
- Unlikely
- Dimensione
- 3–7
A deeply buried persistent weak layer still has the potential to produce very large avalanches and could be triggered by heavy triggers such as cornice falls or smaller avalanches stepping-down.
Confidence
Poor - Due to the number of field observations
Weather Forecast
Unsettled conditions are expected for Tuesday. Wednesday and most of Thursday look to be mainly dry and sunny but localized convective flurries are possible. A Pacific frontal system is expected to reach the north coast Thursday night. Tuesday: Cloudy with sunny breaks, scattered precipitation, freezing level am: 700m pm: 1000m, ridgetop wind: light variableWednesday: Mostly sunny, freezing level am: 700m pm: 1400m, ridgetop wind: light SE-SThursday: A mix of sun and cloud, freezing level am: 1400m pm: 1700m, ridgetop wind: light SE
Avalanche Summary
No new avalanches reported. We are no longer receiving professional daily reports for the region so public observations are really appreciated right now. If you are out in the mountains, send your observations to [email protected]
Snowpack Summary
Highly variable spring conditions are being reported in the region. At lower below-treeline elevations the snowpack is typically wet and isothermal. It has not been refreezing overnight and is melting quickly. Between roughly 1000 and 1500m, the snowpack is undergoing daily melt-freeze cycles. The same conditions can be expected on sun-exposed slopes all the way to mountain-top. On higher elevation north-facing slopes, dry snow can be found. Recent strong S through W winds have scoured windward slopes and created wind slabs in leeward slopes. The early February crust/facet layer is typically down 1.5 to 2.5m. A smaller avalanche or a cornice fall may still have the potential to step down to this layer causing very large, destructive avalanches.