Avalanche Activity Images

  • Rome Ridge - Mt Rolleston18/09/2020
    Rome Ridge - Mt Rolleston
  • Mt Rolleston - Crow Glacier névé08/09/2020
    Mt Rolleston - Crow Glacier névé
  • Rome Ridge - Mt Rolleston (North aspect, 1700m)13/07/2020
    Rome Ridge - Mt Rolleston (North aspect, 1700m)
  • Blimit - Bills Basin (west aspect, 1650m)18/08/2019
    Blimit - Bills Basin (west aspect, 1650m)
  • Mt Rolleston - Goldney Glacier12/08/2019
    Mt Rolleston - Goldney Glacier
  • 1912m point, Cass River09/08/2019
    1912m point, Cass River
  • Mt Rosamond (SE Face) Whitehorn Pass23/10/2018
    Mt Rosamond (SE Face) Whitehorn Pass
  • Mt Philistine - (1800m - 1900m, SE Aspect)15/10/2018
    Mt Philistine - (1800m - 1900m, SE Aspect)
  • Mt Rolleston (1700 - 1800m E Aspect) Goldney Glacier15/10/2018
    Mt Rolleston (1700 - 1800m E Aspect) Goldney Glacier
  • Crow Face, Mt Rolleston (S Aspect)28/09/2018
    Crow Face, Mt Rolleston (S Aspect)
  • Upper Otira Valley (E Aspect, 1800m)18/08/2018
    Upper Otira Valley (E Aspect, 1800m)
  • Upper Otira Valley (N Aspect, Otira Face)18/08/2018
    Upper Otira Valley (N Aspect, Otira Face)
  • Mt Wakeman / White Gl - (E-N Aspect, Initiate 1650m - 2100m)11/11/2017
    Mt Wakeman / White Gl - (E-N Aspect, Initiate 1650m - 2100m)
  • Mt Armstrong - (E Aspect, 1900m & 1700m)28/10/2017
    Mt Armstrong - (E Aspect, 1900m & 1700m)
  • Cornice stress cracks (Mt Manson north ridge)08/08/2017
    Cornice stress cracks (Mt Manson north ridge)
  • Bealey Traverse (Lyell Peak ) NE Aspect, 1700m29/07/2017
    Bealey Traverse (Lyell Peak ) NE Aspect, 1700m
  • Craigieburn Range - 2046m Pt (Enys) E Aspect19/07/2017
    Craigieburn Range - 2046m Pt (Enys) E Aspect
  • Otira Face - (1800m - 1400m, N Aspect)18/07/2017
    Otira Face - (1800m - 1400m, N Aspect)
  • Philistine Traverse - (1900m - 1400m, E Aspect)18/07/2017
    Philistine Traverse - (1900m - 1400m, E Aspect)
  • Philistine Traverse - (1900m - 1400m, NE Aspect)18/07/2017
    Philistine Traverse - (1900m - 1400m, NE Aspect)
  • Mt Rolleston - Rome Ridge (1800m, NE Aspect)03/07/2017
    Mt Rolleston - Rome Ridge (1800m, NE Aspect)
  • Mt Temple - Downhill Basin (1750m, SW Aspect)03/07/2017
    Mt Temple - Downhill Basin (1750m, SW Aspect)
  • Upper Punchbowl Creek - NZ01/01/2017
    Upper Punchbowl Creek - NZ
  • Goldney Glacier (1700m, E Aspect)18/11/2016
    Goldney Glacier (1700m, E Aspect)

Snowfall Model Data / Graphs

The following graphs represent calculated snowpack (and snowfall) at various altitudes in the range 800m - 2000m. It is based on extensive field data obtained of average snowpack and high altitude weather readings on Mt Rolleston's Goldney Ridge (Arthur's Pass National Park) in 2007-2009. Slope angles are based on 20º-25º (windslab is not represented in snowpack depths, but is estimated separately).

Experimental avalanche risk modelling (%) is based on calculated new snow depths, snowpack layer density, free water content, perceived crusts (rain & wind) within the overall snowpack, windslab presence, temperature, humidity and rainfall estimations. Note that the avalanche modelling functions take into account possible path travel distances of triggered avalanche events, hence low altitude areas can still show high risk although stable snow exists at these levels (visit for human analysed avalanche assessments).


  • Graphs are not updated with "todays" snowfall & snow-pack data until midnight on that day when all the day's data is reassessed and crunched.
  • All snowpack data for 2012 & 2013 was lost due to a lightning struck PC. The original graphs will be maintained, but no raw data is recoverable.
  • Click Here to view a HTML table showing snowfall data for 2021. Right Click Here to save a CSV file containing snowfall data for 2021.
Snowpack Model 800m - 1800m (Last 150 days)

20/01/2021 12:04
Snow Fall-Line: 1539m
Mt Rolleston (Goldney Ridge) 800m
Alt. Temp: 4.1ºC
Alt. Windspeed: 22.8kmph
Alt. Av. Windspeed: 18.2kmph
Alt. Max. Windspeed: 25.4kmph
Alt. Wind Chill: -0.3ºC
Alt. Air Pressure: 894hPa
Alt. Day Rainfall: 26.7mm
Alt. 3 Day Rainfall: 223.8mm
Last Snowfall: 114 days ago
7 Day Snowfall: 0.0cm
Snowpack Depth: 0.0cm
Mt Rolleston (Goldney Ridge) 1000m
Alt. Temp: 2.8ºC
Alt. Windspeed: 27.9kmph
Alt. Av. Windspeed: 22.3kmph
Alt. Max. Windspeed: 31.2kmph
Alt. Wind Chill: -2.6ºC
Alt. Air Pressure: 872hPa
Alt. Day Rainfall: 25.8mm
Alt. 3 Day Rainfall: 222.9mm
Last Snowfall: 1 day ago
7 Day Snowfall: 0.0cm
Snowpack Depth: 0.0cm
Mt Rolleston (Goldney Ridge) 1500m
Alt. Temp: 1.6ºC
Alt. Windspeed: 32.6kmph
Alt. Av. Windspeed: 26.1kmph
Alt. Max. Windspeed: 36.5kmph
Alt. Wind Chill: -4.7ºC
Alt. Air Pressure: 819hPa
Alt. Day Rainfall: 16.4mm
Alt. 3 Day Rainfall: 208.0mm
Daily Snowfall: 4.6cm
Snowfall Max. Intensity: 1.6cm/hr (02:04hrs)
Storm Snowfall (79hrs): 7.2cm
7 Day Snowfall: 9.4cm
Snowpack Depth: 4.6cm
Mt Rolleston (Goldney Ridge) 1800m
Alt. Temp: -0.3ºC
Alt. Windspeed: 34.3kmph
Alt. Av. Windspeed: 27.4kmph
Alt. Max. Windspeed: 38.3kmph
Alt. Wind Chill: -7.3ºC
Alt. Air Pressure: 788hPa
Alt. Day Rainfall: 5.8mm
Alt. 3 Day Rainfall: 178.4mm
Daily Snowfall: 11.6cm
Snowfall Max. Intensity: 2.2cm/hr (02:04hrs)
Storm Snowfall (79hrs): 21.1cm
7 Day Snowfall: 29.6cm
Snowpack Depth: 15.5cm
Windslab S: 1.7cm
Windslab E: 19.9cm
Surface Stability (@ 35º): Very Poor (Warning: Slab present!)
Avalanche Chance: 100%
Mt Rolleston (Goldney Ridge) 2000m
Alt. Temp: -1.5ºC
Alt. Windspeed: 35.2kmph
Alt. Av. Windspeed: 28.1kmph
Alt. Max. Windspeed: 39.3kmph
Alt. Wind Chill: -9.0ºC
Alt. Air Pressure: 767hPa
Alt. Day Rainfall: 2.4mm
Alt. 3 Day Rainfall: 153.3mm
Daily Snowfall: 7.9cm
Snowfall Max. Intensity: 1.4cm/hr (02:04hrs)
Storm Snowfall (79hrs): 16.5cm
7 Day Snowfall: 28.3cm
Snowpack Depth: 12.4cm
Windslab S: 0.3cm
Windslab E: 11.0cm

Snowfall Model 800m - 1800m (Last 150 days)

Freezing Level (Last 7 days)

Altitude Rainfall 1000m - 2000m (Last 30 days)

Snowpack Model 800m - 1800m (Previous 12 months)

Snowpack Model 1800m (2014+)

Snowpack Model 1800m (2004 - 2013)

Snowpack Models 2021 - 2002 (1800m snowfall shown only)

2021 Snow Data

snowtable.csv (CSV File of 2021 data)

2020 Snow Data

snowpack2020.xls (XLS File of 2020 data)

2019 Snow Data

snowpack2019.xls (XLS File of 2019 data)
2019 Snowpack Data

2018 Snow Data

snowpack2018.xls (XLS File of 2018 data)
2018 Snowpack Data

2017 Snow Data

snowpack2017.xls (XLS File of 2017 data)
2017 Snowpack Data

2016 Snow Data

snowpack2016.xls (XLS File of 2016 data)
2016 Snowpack Data

2015 Snow Data

snowpack2015.xls (XLS File of 2015 data)
2015 Snowpack Data

2014 Snow Data

snowpack2014.xls (XLS File of 2014 data)
2014 Snowpack Data

2013 Snow Data

Sorry - No data available for 2013!
2013 Snowpack Data

2012 Snow Data

snowpack2012.xls (XLS File of 2012 data)
2012 Snowpack Data

2011 Snow Data

snowpack2011.xls (XLS File of 2011 data)
2011 Snowpack Data

2010 Snow Data

snowpack2010.xls (XLS File of 2010 data)
2010 Snowpack Data

2009 Snow Data

snowpack2009.xls (XLS File of 2009 data)
2009 Snowpack Data

2008 Snow Data

snowpack2008.xls (XLS File of 2008 data)
2008 Snowpack Data

2007 Snow Data

snowpack2007.xls (XLS File of 2007 data)
2007 Snowpack Data

2006 Snow Data

snowpack2006.xls (XLS File of 2006 data)
2006 Snowpack Data

2005 Snow Data

snowpack2005.xls (XLS File of 2005 data)
2005 Snowpack Data

2004 Snow Data

snowpack2004.xls (XLS File of 2004 data)
2004 Snowpack Data

2003 Snow Data

snowpack2003.xls (XLS File of 2003 data)
2003 Snowpack Data

2002 Snow Data

snowpack2002.xls (XLS File of 2002 data)
2002 Snowpack Data

Unique Visitors: 0   Page Counter: 0   Page Updated: 22/09/2020   Site Map
Copyright © Graeme Kates NZ 2021. ALL RIGHTS RESERVED.