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Mountaineering Summary Page

 
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Forecast Links
Avalanche Risk (MSC)
Mountain Conditions
Wednesday 16th September 2020, 08:33hrs: The snow-pack at all levels is now extremely variable after new snow and graupel was delivered yesterday by 100kmph+ NW winds. Generally anything windward is very scoured, whilst lee slopes have substantial build-ups (assuming wind-slab 1800m+). This mornings "snow" to 1500m has refrozen into hard ice sheets (though porous), whilst loose snow above continues to be transported to lee aspects by building NW winds.

Further heavy rain, NW gales, and snow 1400m - 500m is forecast over the next few days (Wed - Fri).


15/09/2020 08:01hrs: Rainfall continues and is likely to for next 3-4 days. Snowfall has now lowered to 950m, though has been falling as graupel for past several hours; this will be introducing weak layering into the altitude snowpack. Substantial rainfall has now penetrated the snowpack up to 1800m in the past 48 hours; yesterday saw the development of wet snow slides out of steeper terrain features (up to Class 2 around the Philistine Bluffs).

Snowfall (although thunder storms are likely that does mean graupel/hail rather than "real snow") should lower to 600m by late afternoon, but will rise to 1100m once several new storm fronts arrive tonight.

14/09/2020 12:12hrs: Raining quite heavily to 1600m at the moment (120mm on Pass so far), and has done so most of the night with rainfall to 2000m at times. Considerable amounts of snow-pack have been stripped off the sub-ranges to 1900m particularly on northern aspects, and there has been some wet snow avalanches triggered around the Main Range (mostly Class 1 & 2 noted so far, and associated with face deloads or steep, heavy altitude snow loads heading over bluffs - last seen out of Philistine Bluffs penetrating about 70m into valley scree. Heard some rumbles in head of Bealey Valley from Rolleston lookout @ 1200hrs but too murky to determine what/where this was associated with, imagine Bealey Slide amphitheater).

Low level snowfalls (600m) from NW are likely to develop for 24 hours from 8am tomorrow morning, in the meantime heavy rain is to continue with snowfall stepping down to 1500m initially.

13/09/2020 07:37hrs: Strong & warm NW winds yesterday managed to strip off new snow on windward aspects up to 1750m. A new Spring storm is brewing for several days from now... heavy rain is expected on Monday (14th), with snowfall levels varying 1300m - 900m.

10/09/2020 18:09hrs: Today's storm is passing about the Main Range, it delivered only about 12mm rainfall (so far at valley floor); this has fallen as snow above 1200m, with about 7-10cm delivered at 1800m by moderate southerly winds; new snow on raw ground has already melted back extremely fast. Further light snowfalls to lower levels are expected in the east (Craigieburn/Torlesse) until midday tomorrow.

  • Mt Rolleston (2275m) - Chockstone Route09/09/2020
    Mt Rolleston (2275m) - Chockstone Route
  • Mt Rolleston (2275m) - High Peak Access08/09/2020
    Mt Rolleston (2275m) - High Peak Access
  • Blimit (1921m)07/09/2020
    Blimit (1921m)
  • Hills Peak (1640m)07/09/2020
    Hills Peak (1640m)
  • Mt Cassidy (1850m)07/09/2020
    Mt Cassidy (1850m)
  • Mt Philistine (1967m) - Southeast aspect07/09/2020
    Mt Philistine (1967m) - Southeast aspect
  • Mt Philistine - Philistine Bluffs (1967m)07/09/2020
    Mt Philistine - Philistine Bluffs (1967m)
  • Mt Philistine - Philistine Ramp (1967m)07/09/2020
    Mt Philistine - Philistine Ramp (1967m)
  • Mt Philistine - Warnocks Bluff (1967m)07/09/2020
    Mt Philistine - Warnocks Bluff (1967m)
  • Mt Rolleston (2275m) - Otira Face (High Peak)07/09/2020
    Mt Rolleston (2275m) - Otira Face (High Peak)
  • Mt Rolleston (2275m) - Otira Face (Middle Peak)07/09/2020
    Mt Rolleston (2275m) - Otira Face (Middle Peak)
  • Mt Rolleston (2275m) - Otira Slide07/09/2020
    Mt Rolleston (2275m) - Otira Slide
  • Mt Rolleston (2275m) - Philistine Traverse07/09/2020
    Mt Rolleston (2275m) - Philistine Traverse
  • Mt Stuart (1906m)07/09/2020
    Mt Stuart (1906m)
  • Mt Temple (1913m) - West Face07/09/2020
    Mt Temple (1913m) - West Face
  • Phipps Peak (1965m) - West Ridge07/09/2020
    Phipps Peak (1965m) - West Ridge
  • Avalanche Peak (1833m)06/09/2020
    Avalanche Peak (1833m)
  • Grey Range05/09/2020
    Grey Range
  • Mt Cheeseman (2031m)05/09/2020
    Mt Cheeseman (2031m)
  • Mt Olympus (2094m)05/09/2020
    Mt Olympus (2094m)
  • Tarn Basin (Tims Stream)05/09/2020
    Tarn Basin (Tims Stream)
  • Lyell Peak (1828m)03/09/2020
    Lyell Peak (1828m)
  • Mt Bealey (1836m) - North aspect03/09/2020
    Mt Bealey (1836m) - North aspect
  • Mt Rolleston (2275m) - Goldney Ridge03/09/2020
    Mt Rolleston (2275m) - Goldney Ridge
  • Mt Rolleston (2275m) - Rome Ridge03/09/2020
    Mt Rolleston (2275m) - Rome Ridge
  • Kellys Range - Kelly Hill (1408m)02/09/2020
    Kellys Range - Kelly Hill (1408m)
  • Mt Aicken (1858m) - 1863m Point02/09/2020
    Mt Aicken (1858m) - 1863m Point
  • Mt Barron (1730m) - South aspects02/09/2020
    Mt Barron (1730m) - South aspects
  • Mt Rolleston (2275m) - Bealey Face02/09/2020
    Mt Rolleston (2275m) - Bealey Face
  • Phipps Peak (1965m) - South Face02/09/2020
    Phipps Peak (1965m) - South Face
Click Here to view the most recent condition images.

Weather Information
SEVERE WEATHER POSSIBLE IN NEXT 5 DAYS!
Friday
18 Sep

-2ºC
Saturday
19 Sep

-1 / 8ºC
Sunday
20 Sep

0 / 7ºC
Monday
21 Sep

2 / 7ºC
Tuesday
22 Sep

5 / 8ºC
Wednesday
23 Sep

2 / 10ºC
Click for more information
Update:19/09/20 01:30hrs
 
LATEST DAILY READINGS
Update: 19/9/20 1:26hrs NZST
Sunrise: 6:29hrs
Sunset: 18:30hrs
Temperature: 4.4ºC  (Stable)
Temperature (Low): 4.2ºC
Temperature (High): 4.6ºC
Wind Chill: -0.6ºC
Humidity: 20%  (Rising)
Barometer: 1012.13mb (Rising)
Wind Speed: 18km/h
Wind Direction: W
Wind Gust: 53km/h (0:05hrs)
Cloud Base: 3355m ASL
Freezing Level: 1707m
Daily Rainfall: 0mm
24 Hour Rain: 3.81mm

THIS STORM CYCLE (134hrs)
Rainfall: 255.0mm
High Rain Rate: 10.9mm/hr @ 17:20hrs 14/9/20
Temp Low: 0.4ºC @ 4:00hrs 16/9/20
Temp High: 8.7ºC @ 10:00hrs 17/9/20
Wind Gust: 105kmph @ 9:05hrs 17/9/20
Dom.Wind Dir: West
Barometer Low: 997mb @ 14:00hrs 15/9/20
SNOW MODEL
Last Update: 19/09/2020 01:04
Location: Mt Rolleston (Goldney Ridge) 1800m
Snow Fall-Line: 1180m
Alt. Temp: -0.5ºC
Alt. Windspeed: 34.3kmph
Alt. Av. Windspeed: 35.3kmph
Alt. Max. Windspeed: 36.3kmph
Alt. Wind Chill: -7.6ºC
Alt. Air Pressure: 808hPa
Alt. 3 Day Rainfall: 86.8mm (Today: 0.0mm)
Storm Snowfall (134hrs): 43.5cm
7 Day Snowfall: 50.2cm
Snowpack Depth: 141.4cm
Windslab N: 15.9cm
Windslab S: 43.0cm
Windslab E: 41.8cm
Surface Stability (@ 35º): Very Poor (Warning: Slab present!)
Avalanche Chance: 100%

Click Here to view full weather station details.

 
Click Here to view full snow model details.

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