May 17, 2017

    AVALANCHE ACTIVITY:

    Snowballing on solar exposed slopes once the sun came out yesterday.

   Alpine on Blackcomb was closed at 14:00 hrs.



    YESTERDAY:

   11:00 Hrs, unsettled but mostly cloudy in the morning.

    12:00 Hrs a few breaks but still mostly cloudy.

    Tuesday Morning.

    By mid afternoon there were some holes over the valley.

    Fresh snow on the glacier.

    Sunny breaks in the afternoon.

    Tuesday Afternoon.

    Around 15:30 Hrs more blue but that did not last long.

    Cumulus Nimbus clouds.

    A very light rain shower, between 16:45 & 17:00 Hrs.

    Dark moisture laden clouds at 19:00 Hrs.


Weather Observations for May 17, 2017 taken at 06:00 Hours.

2240 meters      -3, Winds were 20-35 KPH ESE--Horstman Hut 
1860 meters     +1, Winds were 20-30 KPH NNE--Rendevous
1550 meters     +1, 0 cm of new snow, 0 cm in 24 hrs, 215 cm Base, RH 92%  --Catskinner 

  660 meters     +6, Valley Temp, Max Temp Yesterday was +12.5, 0.7 mm of Precip recorded yest

Catskinner weather plot (1550 meters) received 0.2 mm from 16:45-17:00 Hrs yesterday.

   As of 07:00 Hrs this am we have scattered cloud and unlimited visibility.


FORECAST:

An offshore upper level ridge will build today with warming temperatures in a Northerly flow aloft.
There is a significant stratus layer mid mountain which may lift as the morning progresses. The layer is moist so cannot rule out the chance of some light intermittent showers this afternoon. The FL will rise to 2400+ meters today.  The low to our North will send some cloud our way Thursday as the ridge continues to push inland, strengthening on Friday. Lingering cloud on Saturday for unsettled conditions before the ridge strengthens further for sunny conditions for Sunday and Monday.
Guesstimates: trace-1 mm by Thursday morning, trace-2 mm by Friday morning.

    GOES IR image from this am.

                  Ridge builds today with a mid stratus layer which may lift later this am.

    Flow for today.

    Moisture is South of our zone.

    High builds today, low to the North will likely send cloud our way at times over the next few days.

    Still a chance of some cloud for Thursday.

    Omega block into Wednesday.




OBSERVATIONS & INFORMATION:

    Alpine was closed at 14:00 Hrs with daytime warming and snowballing.

    Leaves are coming out on the trees.

    Approaching moisture from the south.

    Looking north later in the day.


ARTICLES:

Adding LVM to Airbag Battery Pack: WildSnow ModShop

Hurley Opening update: I survived the Hurley

La Grande Ride--April Showers bring may Flurries: Oregon

Why are St Bernard's always depicted with barrels around their necks: Mental Floss