Wind Slabs
- Toutes altitudes
- Probabilité
- Possible
- Taille
- 1.5
The windloading from last week's storm has now had a few days to bond and settle. It's still worth investigating windloaded terrain before committing and taking normal precautions.
Bulletin d’avalanche
Voir sur la carteTwo Thumbs
New Zealand Avalanche Advisory
Danger d’avalanche
- High Alpine · above 1,800 m
- 2 · Modéré
- Alpine · 1,200 m–1,800 m
- 2 · Modéré
- Sub Alpine · below 1,200 m
- 2 · Modéré
Périmé — ce bulletin a expiré 2 months ago. Vous consultez des conditions passées, pas le bulletin en cours.
Points saillants
The snowpack is settling and gaining strength.
Pockets of windslab could still be lurking in isolated terrain and loose wet avalanching is possible if it gets warm.
Problèmes avalancheux
Loose Wet
- Toutes altitudes
- Probabilité
- Possible
- Taille
- 1.5
The sun will come out on Saturday and at lower elevations things will warm up. Loose snow activity is possible in the heat of the day on sunny slopes. There's a lot of snow on the northern half, so these could get quite large given a big enough slope that rapidly warms. Timing is everything. Anticipate where the sun will be baking the snowpack. Watch for signs of rollerballing. Consider what is above you and where you would end up if caught.
Recent Avalanche Activity
5 slab avalanches were triggered naturally, possibly by cornice fall near the end of the storm on Wednesday. They were up to size 2 (large enough to bury a person) on a NW aspect at 2100m on the Richmond Range.
Two loose dry avalanches ran naturally, on Mt Maude, probably during the storm. They were size 2 on a N aspect. They ran right to ground.
There have been limited observations of terrain post storm, so other avalanches are possible.
If you see any activity on the Two Thumb Range, please make a public observation. It really helps us to produce accurate forecasts.
Current Snowpack Conditions
Total amounts of new snow varies across the region, with the heaviest falls in the south and west of the range.
120 cm of light snow was reported in the Camp Stream area. 70cm of dense snow at Round Hill and Dobson.
Fox Peak only received 40cm. We expect the far north end of the range to also have around 40cm.
The snow has been distributed by gale southerly winds with deep drifts on northerly facing terrain and exposed ridges are scoured.
The new snow is settling fast. A variety of surface conditions have been reported with rime crust and sun crust widespread.
Mountain Weather
Fine, apart from some morning valley fog. Severe morning frosts.
Wind at 1000 metres
Light.
Wind at 2000 metres
Southerly 30 km/h, gradually turning to westerly 30 km/h by evening.
Freezing level
1400 metres.
Sliding Danger
Sliding danger is low due to new snow.
Forecast Confidence
Moderate
- We are confident due to a stable weather pattern.
- We are uncertain about how quickly the snowpack will recover and gain strength.
New Zealand Avalanche Advisory (NZ Mountain Safety Council)