Avalanche Activity Images
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 18/09/2020 Rome Ridge - Mt Rolleston
 08/09/2020 Mt Rolleston - Crow Glacier névé
 13/07/2020 Rome Ridge - Mt Rolleston (North aspect, 1700m)
 18/08/2019 Blimit - Bills Basin (west aspect, 1650m)
 12/08/2019 Mt Rolleston - Goldney Glacier
 09/08/2019 1912m point, Cass River
 23/10/2018 Mt Rosamond (SE Face) Whitehorn Pass
 15/10/2018 Mt Philistine - (1800m - 1900m, SE Aspect)
 15/10/2018 Mt Rolleston (1700 - 1800m E Aspect) Goldney Glacier
 28/09/2018 Crow Face, Mt Rolleston (S Aspect)
 18/08/2018 Upper Otira Valley (E Aspect, 1800m)
 18/08/2018 Upper Otira Valley (N Aspect, Otira Face)
 11/11/2017 Mt Wakeman / White Gl - (E-N Aspect, Initiate 1650m - 2100m)
 28/10/2017 Mt Armstrong - (E Aspect, 1900m & 1700m)
 08/08/2017 Cornice stress cracks (Mt Manson north ridge)
 29/07/2017 Bealey Traverse (Lyell Peak ) NE Aspect, 1700m
 19/07/2017 Craigieburn Range - 2046m Pt (Enys) E Aspect
 18/07/2017 Otira Face - (1800m - 1400m, N Aspect)
 18/07/2017 Philistine Traverse - (1900m - 1400m, E Aspect)
 18/07/2017 Philistine Traverse - (1900m - 1400m, NE Aspect)
 03/07/2017 Mt Rolleston - Rome Ridge (1800m, NE Aspect)
 03/07/2017 Mt Temple - Downhill Basin (1750m, SW Aspect)
 01/01/2017 Upper Punchbowl Creek - NZ
 18/11/2016 Goldney Glacier (1700m, E Aspect)
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Snowfall Model Data / Graphs
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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 www.avalanche.net.nz for human analysed avalanche assessments).
Notes:
- 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.
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Snowpack Model 800m - 1800m (Last 150 days)
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SNOW MODEL
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
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Snowfall Model 800m - 1800m (Last 150 days)
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Freezing Level (Last 7 days)
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Altitude Rainfall 1000m - 2000m (Last 30 days)
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Snowpack Model 800m - 1800m (Previous 12 months)
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Snowpack Model 1800m (2014+)
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Snowpack Model 1800m (2004 - 2013)
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Snowpack Models 2021 - 2002 (1800m snowfall shown only)
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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)
2018 Snow Data
snowpack2018.xls (XLS File of 2018 data)
2017 Snow Data
snowpack2017.xls (XLS File of 2017 data)
2016 Snow Data
snowpack2016.xls (XLS File of 2016 data)
2015 Snow Data
snowpack2015.xls (XLS File of 2015 data)
2014 Snow Data
snowpack2014.xls (XLS File of 2014 data)
2013 Snow Data
Sorry - No data available for 2013!
2012 Snow Data
snowpack2012.xls (XLS File of 2012 data)
2011 Snow Data
snowpack2011.xls (XLS File of 2011 data)
2010 Snow Data
snowpack2010.xls (XLS File of 2010 data)
2009 Snow Data
snowpack2009.xls (XLS File of 2009 data)
2008 Snow Data
snowpack2008.xls (XLS File of 2008 data)
2007 Snow Data
snowpack2007.xls (XLS File of 2007 data)
2006 Snow Data
snowpack2006.xls (XLS File of 2006 data)
2005 Snow Data
snowpack2005.xls (XLS File of 2005 data)
2004 Snow Data
snowpack2004.xls (XLS File of 2004 data)
2003 Snow Data
snowpack2003.xls (XLS File of 2003 data)
2002 Snow Data
snowpack2002.xls (XLS File of 2002 data)
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