14 May 2017

May 14, 2017


    AVALANCHE ACTIVITY:

    Yesterday saw a few wet Na and Sc Sz 1 on solar exposed slopes.


    YESTERDAY:

    Early Saturday morning May 13, 2017.

    Awesome looking morning.

    Convective cloud development to our South.

    Saturday morning.

    The ribbon remains intact.


    Overcast by 12:00 Hrs.

    Clouds pushed in from the South.

    Spring skiing conditions with a nice surface mid mountain.

    Fissile.

    Firmer conditions in the alpine with dry powder in the morning off piste.

    Cloud layer descended as the day progressed.

    Big picture Saturday afternoon.

    Sunset was at 20:48 Hrs yesterday.

Weather Observations for May 14, 2017 taken at 06:00 Hours.

2240 meters      -7, Winds were 10-15 KPH SE--Horstman Hut 
1860 meters      -4, Winds were   5-10 KPH SE--Rendevous
1550 meters      -1, 0 cm of new snow, 0 cm in 24 hrs, 220 cm Base, RH 95%  --Catskinner 
  660 meters     +4, Valley Temp, Max Temp Yesterday was +12.9, 0.0 mm of Precip recorded yest

    As of 07:00 hrs this am we have broken cloud and unlimited visibility.


FORECAST:

An upper level trough will bring cool showery weather to the area in a Northwesterly flow aloft. Unsettled conditions are expected with the FL rising to 1800+ meters then dropping to 1200 meters by tonight. An occluded front is forecasted to arrive on Monday with overcast skies and light precipitation with the FL hovering in the 1600 meter range. A cold upper low coming out of the Gulf of Alaska will push through on Tuesday with overcast conditions, light sporadic showers and warm temperatures. The FL could rise to 2200 meters! A weak upper level ridge appears to build for Wednesday but it could remain unsettled with showery warm weather.
Guesstimates: Trace-2 mm at 1550 meters by Monday morning, 5-10 cm of snow above 1600 meters by Tuesday morning, 4-6 mm at 1550 meters by Wednesday morning.

    GOES IR image for this am.


          Unsettled today with increasing clouds later this am into pm.

    Overcast Sunday afternoon.

    Flow for today.

    Occluded front for Monday with steady light precipitation.

    Low moves down the coast Monday thru Wednesday.

    High pressure builds by Wednesday.



    OBSERVATIONS & INFORMATION:

    There were some cumulus nimbus passing through yesterday with isolated showers in the area.

    A new sign..

    Powder in the alpine.

    People exploring the avalanche debris in Lakeside.


ARTICLES:

Parks Canada Avalanche Advisory: May 14, 2017

Here's how you can help stop climate change: ANI

Cascades Hwy reopening planned for May 16, 2017: Washington State

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