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Forecast Links
Avalanche Risk (Local)
09/11/2018 22:18hrs
(Above 1800m)
Dangerous conditions, conservative decision making essential!
(1200m - 1800m)
Dangerous conditions, conservative decision making essential!
(Below 1200m)
Heightened avalanche conditions on specific terrain features.
Mountain Conditions
General Conditions (Updated 00931hrs Sat 11th November, 2018):

An obvious cycle of narrow path wet snow avalanches commenced this morning at 0800hrs across the back of the Southern Alps through the Park with the first cloud-free day. Initially restricted to aspects exposed to solar radiation from 1800m & above, but by 0900hrs southern aspects at a similar elevation range started reacting as well. Quite a few of these slides traveled for long distances before halting in shallow angled ground. Although a substantial amount of snow-pack was destroyed in the storm there is still unseasonably deep snow-pack on some southern aspects above 1700m. Climbers have reported a "suspended" snow-pack in places where ground water has eroded the pack.

The snow-pack is still draining of rainwater, having received up to 350mm to 2500m in the Park. New snow (15-30cm) that fell at the storm's end is restricted to areas of persistent snow-pack above 1800m. The snow-pack is isothermic, soaked, and contains almost no inter-crystal bonds. Wet snow avalanche events are very likely on solar aspects. Self-arrests are likely to be very difficult in the slop. Although many cornices collapsed in the storm, there is a surprising number that have literally hung in there and threaten slopes below, and no doubt have very little strength.

Western rivers are still in high flow, and the Waimakariri is still running swift & deep. Eastern tributary rivers are now cross-able with care.

Climbing conditions: Variable! Beware of loose wet snow in areas with poor run-out prospects.

The higher altitude snow-pack about the Main Range has been particularly deep this year (particularly on southern aspects); don't be misled by the lack of low altitude snow. Glide cracks and slumps in the snow-pack are forming in areas of steeper terrain features. The snow-pack has been absorbing substantial water from the successive storms and is now failing from below & above.

Butt slides and glissades are just asking for trouble in this season with such a loose surface pack, lets get through another season without an accident caused by this activity please!

Rapid snow-melt is now upon us and tributary rivers are starting to react particularly in the PM; the river you cross in the AM may not be the same beast in the PM, take care!

I have been completely rewriting the "Arthur's Pass Climbing Guide", this is a huge project; most of the beta in it comes from the 1990's when I was young, stupid, had little fear (and many less climbing injuries), and we had not been rattled severely by so many route damaging earthquakes; it definitely needs updating and correction. To assist with this I have placed the entire updated guide online HERE, feel free to comment on routes, or provide climbing topos, as I've run out of time to complete these at present.

Cheers - Graeme -
  • Blimit (1921m)(New) 12/11/2018
    Blimit (1921m)
  • Mt Cassidy (1850m)(New) 12/11/2018
    Mt Cassidy (1850m)
  • Mt Oates (2041m)(New) 12/11/2018
    Mt Oates (2041m)
  • Mt Williams (1718m)(New) 12/11/2018
    Mt Williams (1718m)
  • Avalanche Peak (1833m)(New) 11/11/2018
    Avalanche Peak (1833m)
  • Browning Pass23/10/2018
    Browning Pass
  • Whitehorn Ice-field23/10/2018
    Whitehorn Ice-field
  • Whitehorn Pass23/10/2018
    Whitehorn Pass
  • Mt Armstrong (2110m)22/10/2018
    Mt Armstrong (2110m)
  • Mt Philistine (1967m)22/10/2018
    Mt Philistine (1967m)
  • Mt Rolleston (2275m) - Otira Face22/10/2018
    Mt Rolleston (2275m) - Otira Face
  • Mt Rolleston (2275m) - Otira Face (Middle)22/10/2018
    Mt Rolleston (2275m) - Otira Face (Middle)
  • Mt Rolleston (2275m) - Otira Slide22/10/2018
    Mt Rolleston (2275m) - Otira Slide
  • Mt Rolleston (2275m) -  Crow Face21/10/2018
    Mt Rolleston (2275m) - Crow Face
  • Mt Rolleston (2275m) - East Crow Glacier21/10/2018
    Mt Rolleston (2275m) - East Crow Glacier
  • Mt Rolleston (2275m) - Rome Ridge21/10/2018
    Mt Rolleston (2275m) - Rome Ridge
  • Mt Bowers (1891m)14/10/2018
    Mt Bowers (1891m)
  • Mt Edgar Evans (2019m)14/10/2018
    Mt Edgar Evans (2019m)
  • Mt Franklin (2145m)14/10/2018
    Mt Franklin (2145m)
  • Mt Rolleston (2275m) - Goldney Ridge14/10/2018
    Mt Rolleston (2275m) - Goldney Ridge
  • Mt Wilson (2035m)14/10/2018
    Mt Wilson (2035m)
  • Bealey / Hut Spur (1545m)09/10/2018
    Bealey / Hut Spur (1545m)
  • Mt Bruce (1630m) - North aspect09/10/2018
    Mt Bruce (1630m) - North aspect
  • Lyell Peak (1828m)07/10/2018
    Lyell Peak (1828m)
  • Mt Bealey (1836m) - Northeast aspect07/10/2018
    Mt Bealey (1836m) - Northeast aspect
  • Mt Scott (2009m)06/10/2018
    Mt Scott (2009m)
  • Mt Stewart (1934m)28/09/2018
    Mt Stewart (1934m)
  • Mt Harper (2222m)26/09/2018
    Mt Harper (2222m)
  • Mt Speight (2116m) - Speight Buttress26/09/2018
    Mt Speight (2116m) - Speight Buttress
  • Mt Campbell (1829m)25/09/2018
    Mt Campbell (1829m)
  • Mt Guinevere (2042m)25/09/2018
    Mt Guinevere (2042m)
  • Mt Lancelot (2112m)25/09/2018
    Mt Lancelot (2112m)
  • Mt Rolleston (2275m) - Crow icefall25/09/2018
    Mt Rolleston (2275m) - Crow icefall
  • Mt Aicken (1858m)22/09/2018
    Mt Aicken (1858m)
  • Mt Rolleston (2275m) - Bealey Face20/09/2018
    Mt Rolleston (2275m) - Bealey Face
  • Mt Rolleston (2275m) - Chockstone Route20/09/2018
    Mt Rolleston (2275m) - Chockstone Route
  • Mt Temple (1913m)20/09/2018
    Mt Temple (1913m)
  • Phipps Peak (1965m) - West Ridge20/09/2018
    Phipps Peak (1965m) - West Ridge
  • Mt Alexander (1958m)11/09/2018
    Mt Alexander (1958m)
  • Mt Barron (1730m)11/09/2018
    Mt Barron (1730m)
Click Here to view the most recent condition images.

Weather Information
15 Nov

5 / 16ºC
16 Nov

7 / 14ºC
17 Nov

6 / 12ºC
18 Nov

-1 / 10ºC
19 Nov

-2 / 6ºC
20 Nov

-1 / 6ºC
21 Nov

2 / 7ºC
22 Nov

3 / 12ºC
23 Nov

4 / 13ºC
24 Nov

4 / 13ºC
Click for more information
Update:15/11/18 06:30hrs
Update: 15/11/18 5:20hrs NZST
Sunrise: 5:01hrs
Sunset: 19:38hrs
Temperature: 7.1ºC  (Falling)
Temperature (Low): 7.1ºC
Temperature (High): 10.6ºC
Wind Chill: 7.1ºC
Humidity: 53%  (Rising)
Barometer: 1021.34mb (Rising)
Wind Speed: 1km/h
Wind Direction: WSW
Wind Gust: 45km/h (2:19hrs)
Cloud Base: 1843m ASL
Freezing Level: 2122m
Daily Rainfall: 0mm
24 Hour Rain: 0mm

Last Update: 15/11/2018 05:04
Location: Mt Rolleston (Goldney Ridge) 1800m
Alt. Temp: 1.4ºC
Alt. Windspeed: 2.0kmph
Alt. Av. Windspeed: 3.0kmph
Alt. Max. Windspeed: 4.0kmph
Alt. Wind Chill: N/A
Last Snowfall: 5 days ago
7 Day Snowfall: 32.2cm
Snowpack Depth: 72.4cm
Windslab S: 1.6cm
Windslab E: 2.5cm
Surface Stability (@ 35º): Very Poor
Avalanche Chance: 43%
2 Day
3 Day
Carrington Hut15/11/2018 - 04:05hrs0.0mm0mm0mm
Grasmere Stn15/11/2018 - 04:05hrs0.0mm0mm0mm
Mt Cheeseman15/11/2018 - 04:05hrs0.0mm0mm0mm

Click Here to view full weather station details.

Click Here to view full snow model details.

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