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Satellite Image
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Forecast Links
Avalanche Risk (Local)
16/05/2021 11:37hrs
(Above 1800m)
Dangerous conditions, conservative decision making essential!
(1200m - 1800m)
Heightened avalanche conditions on specific terrain features.
(Below 1200m)
No Rating
Not enough snow on ground to create avalanche conditions
Mountain Conditions
Tuesday 18th May 2021, 08:18hrs: Today's (Tuesday) snowfall has lowered to about 800m; not so much has fallen; about 10cm of fresh has fallen at 1800m on the Main Range atop preexisting snow-pack (10-15cm); northerly winds are creating some drifting.

17/05/2021 07:35hrs: Snowfall yesterday lowered to 1500m, but then retracted to back to 1700m with some rainfall below this level. Another storm develops later today (currently OK) followed by progressively lowering snowfall to 800m by tomorrow (Tuesday).

16/05/2021 07:31hrs: Stormy weather continues. Further heavy rain is likely today followed by progressively lowering snowfall to 800m by Tuesday. Snowing currently 1600m+.

Great quantities of fresh snow were scoured off last Friday night in galeforce winds and heavy rain. Ground temperatures above 1950m could now potentially start holding snow.

12/05/2021 09:14hrs: Only a dusting (3-5cm) of fresh snow across the Main Range and sub-ranges this morning (lowered to 800-1000m); potentially a bit more may arrive as its now socked in again.

10/05/2021 07:45hrs: Substantial, high level heavy rain arrived over the weekend, this successfully stripped back most remaining fresh snow across the Main Range. Rivers remain high or in flood this morning. Further heavy rain should develop tonight (Monday) with heavy rain through Tuesday; this will turn to low level snowfall (700m) by Tuesday night, and further lower to 600m by Wednesday morning before clearing. About 2 - 12cm is expected at lower level (the greater depths towards Porters Pass), however 20-35cm is likely at altitude.

  • Avalanche Peak (1833m)28/04/2021
    Avalanche Peak (1833m)
  • Hills Peak (1640m)28/04/2021
    Hills Peak (1640m)
  • Mt Barron (1730m) - Southeast aspect28/04/2021
    Mt Barron (1730m) - Southeast aspect
  • Mt Cassidy (1850m)28/04/2021
    Mt Cassidy (1850m)
  • Mt Philistine - Philistine Bluffs (1967m)28/04/2021
    Mt Philistine - Philistine Bluffs (1967m)
  • Mt Philistine - Warnocks Bluff (1967m)28/04/2021
    Mt Philistine - Warnocks Bluff (1967m)
  • Mt Rolleston (2275m) - Bealey Face28/04/2021
    Mt Rolleston (2275m) - Bealey Face
  • Mt Rolleston (2275m) - Goldney Ridge28/04/2021
    Mt Rolleston (2275m) - Goldney Ridge
  • Mt Rolleston (2275m) - Rome Ridge28/04/2021
    Mt Rolleston (2275m) - Rome Ridge
  • Mt Temple (1913m) - West Face28/04/2021
    Mt Temple (1913m) - West Face
  • Phipps Peak (1965m) - South Face28/04/2021
    Phipps Peak (1965m) - South Face
  • Castle Hill Peak (1998m)27/04/2021
    Castle Hill Peak (1998m)
  • Craigieburn Range27/04/2021
    Craigieburn Range
  • Mt Armstrong (2110m) - Southeast aspect07/04/2021
    Mt Armstrong (2110m) - Southeast aspect
  • Mt Lancelot (2112m) - North aspect07/04/2021
    Mt Lancelot (2112m) - North aspect
  • Mt Philistine (1967m) - South aspect07/04/2021
    Mt Philistine (1967m) - South aspect
  • Mt Rolleston (2212m) - Low Peak07/04/2021
    Mt Rolleston (2212m) - Low Peak
  • Mt Rolleston (2275m) - High Peak Access07/04/2021
    Mt Rolleston (2275m) - High Peak Access
  • Mt Rolleston (2275m) - Otira Face (High Peak)07/04/2021
    Mt Rolleston (2275m) - Otira Face (High Peak)
  • Mt Rolleston (2275m) - Otira Face (Middle Peak)07/04/2021
    Mt Rolleston (2275m) - Otira Face (Middle Peak)
  • Mt Rolleston (2275m) - Otira Face Couloir07/04/2021
    Mt Rolleston (2275m) - Otira Face Couloir
  • Mt Rolleston (2275m) - Philistine Traverse07/04/2021
    Mt Rolleston (2275m) - Philistine Traverse
  • Mt Williams (1718m) - Gunbarrel Scree route24/03/2021
    Mt Williams (1718m) - Gunbarrel Scree route
  • Mt Williams (1718m) - Southwest ridge24/03/2021
    Mt Williams (1718m) - Southwest ridge
  • The Dome (1938m)24/03/2021
    The Dome (1938m)
  • The Spike (1440m)24/03/2021
    The Spike (1440m)
  • Blimit (1921m)22/03/2021
    Blimit (1921m)
  • Mt Rolleston (2275m) - Middle Peak (Otira Face)22/03/2021
    Mt Rolleston (2275m) - Middle Peak (Otira Face)
  • Mt Rolleston (2275m) - Otira Slide22/03/2021
    Mt Rolleston (2275m) - Otira Slide
  • Mt Rolleston (2275m) - Upper Waimakariri Approaches22/03/2021
    Mt Rolleston (2275m) - Upper Waimakariri Approaches
Click Here to view the most recent condition images.

Weather Information
18 May

19 May

1 / 6ºC
20 May

2 / 7ºC
21 May

-3 / 7ºC
22 May

-2 / 8ºC
23 May

-2 / 10ºC
Click for more information
Update:18/05/21 16:30hrs
Update: 18/5/21 16:24hrs NZST
Sunrise: 7:42hrs
Sunset: 17:16hrs
Temperature: 3.2ºC  (Falling)
Temperature (Low): 0.7ºC
Temperature (High): 5.9ºC
Wind Chill: -2.3ºC
Humidity: 83%  (Rising)
Barometer: 995.91mb (Rising)
Wind Speed: 19km/h
Wind Direction: WNW
Wind Gust: 95km/h (14:57hrs)
Cloud Base: 3355m ASL
Freezing Level: 1522m
Daily Rainfall: 12.19mm
Hourly Rain: 0mm/hr
24 Hour Rain: 15.49mm
Rain Days (2021): 55

Last Update: 18/05/2021 16:04
Location: Mt Rolleston (Goldney Ridge) 1800m
Alt. Temp: -1.1ºC
Alt. Windspeed: 34.3kmph
Alt. Av. Windspeed: 18.4kmph
Alt. Max. Windspeed: 34.3kmph
Alt. Wind Chill: -8.3ºC
Alt. Air Pressure: 794hPa
Alt. 3 Day Rainfall: 44.6mm (Today: 0.1mm)
Daily Snowfall: 7.4cm
Snowfall Max. Intensity: 3.4cm/hr (01:04hrs)
Last Snowfall: 1 days ago
7 Day Snowfall: 26.4cm
Snowpack Depth: 19.2cm
Windslab S: 6.9cm
Windslab E: 0.8cm
Surface Stability (@ 35º): Very Poor (Warning: Slab present!)
Avalanche Chance: 36%
2 Day
3 Day
Carrington Hut18/05/2021 - 15:00hrs22.0mm27mm77mm
Mid Poulter River18/05/2021 - 15:00hrs13.5mm14mm43mm
Grasmere Stn18/05/2021 - 15:00hrs8.5mm8.5mm14mm
Mt Cheeseman18/05/2021 - 15:00hrs8.5mm8.5mm14mm
Goldney Ridge18/05/2021 - 16:43hrs5mm10mm104mm

Click Here to view full weather station details.

Click Here to view full snow model details.

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