7 Dec 2017

December 7, 2017


    AVALANCHE ACTIVITY:

    A bit more activity on Mount Currie!

    Locally, loose wet avalanches up to Sz 1.5. Lots of pinwheeling and snowballing.


    YESTERDAY:

    Clear skies except for some scattered valley cloud.

    Moon was very visible on Wednesday morning.


    High of +1.7 in the valley yesterday. +7 at 2240 meters.



Weather Observations for December 7, 2017 taken at 06:00 Hours.

2240 meters    +5, Winds were 5-10 KPH E  --Horstman Hut
1835 meters    +8, Winds were   0-5 KPH E  --Roundhouse
1660 meters    +1, 0 cm of new, 0 cm in 24 hrs  Base 145 cm --Pig Alley
  660 meters     -2, Valley Temp, Max Temp Yesterday was +1.7, 0.0 mm of precip recorded yest

    As of 07:30 hrs this am we have clear skies and unlimited visibility. Some valley cloud to the N.


FORECAST:

The strong ridge of high pressure will continue for at least one more week, models are indicating some unsettled weather beyond the next 7 days but that could change. High clouds from a system to the North will move into our zone Friday and Saturday for a mix of sun and cloud with the FL dropping to around 2400 meters. Cloud may linger on Sunday as well before the ridge strengthens and the FL begins to rise as high as 3700 meters on Monday.

    GOES IR image, high stretches down into Southern California.

    California!!!


     Warm temperatures in the alpine again for today.


   Ridge shifts East on Friday and Saturday but rebounds again on Sunday.



    INFORMATION & OBSERVATIONS:

    Melt freeze cycle on the rocks in the alpine.

    Blackcomb getting the alpine ready.


    Surface Hoar just below treeline. Patches of small surface hoar in the alpine as well.

    Moist surface hoar from sun exposure below 1000 Meters.

    Big picture on Wednesday.

    Surface hoar in the Callaghan.                                                                   Bridget Mcclarty Image


ARTICLES:

Early season avalanche on Mount Washington: New Hampshire

Use a Checklist to Facilitate Better Decisions: Mountain Skills

Richardson Rd closed following avalanches and extreme snow: Alaska

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