Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Hochgebirge
- Waldgrenze
- Unterhalb der Waldgrenze
- Wahrscheinlichkeit
- Possible - Likely
- Größe
- 1–2.5
New wind slabs will take time to stabilize. Use caution when heading to wind prone locations.
Lawinenlagebericht
Auf der Karte ansehenJasper
Dec 28 – 29, 2020
Archiviert · abgelaufen 6 years ago
Lawinengefahr
Tue
Wed
Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
1 · Gering
Kernpunkte
Conservative terrain choice is key until the reactivity of avalanche problems and their location can be deduced.
Lawinenprobleme
Persistent Slabs
NNEESESSWWNW- Hochgebirge
- Waldgrenze
- Unterhalb der Waldgrenze
- Wahrscheinlichkeit
- Unlikely - Possible
- Größe
- 1–2
Dec. Surface hoar to 6mm can be found in sheltered locations up to 2000m and is reactive to skier traffic.
Deep Persistent Slabs
NNEESESSWWNW- Hochgebirge
- Waldgrenze
- Unterhalb der Waldgrenze
- Wahrscheinlichkeit
- Unlikely - Possible
- Größe
- 1.5–3.5
Be cautious of thick to thin snowpack areas being likely trigger locations. The wind slabs or persistent slabs have the potential to step down to the weakness at the base of the snowpack.
Weather Forecast
Monday: Cloudy with sunny periods. Precipitation: Nil. Alpine temperature: High -10 C. Ridge wind west: 10 km/h.
Tuesday: A mix of sun and cloud. Precipitation: Nil. Alpine temperature: Low -16 C, High -7 C. Ridge wind west: 10-20 km/h.
Snowpack Summary
15-30cm of soft snow or dense wind-slabs location dependent over a generally firm mid-pack. Dec. Surface Hoar is down 40cm in isolated sheltered spots and reactive to skier traffic. An early season crust is down 40-100cm and decomposing. It overlies basal facets and depth hoar but is well bridged by the mid-pack above unless shallow location.
Avalanche Summary
Sz 2 wind slab at 2000m on a NE aspect running far near the Saskatchewan Crossing yesterday. Surface hoar reactive to skier loads in isolated sheltered location up to 2000m.
Confidence
Due to the number of field observations