May 8, 2018

    AVALANCHE ACTIVITY:

   Old Xh Sz 3 from last week.

    Lots of carnage. Yesterday no new avalanches were observed locally.



    YESTERDAY:

    Unsettled Monday morning.

    More cloud in the morning.

    Cumulus cloud development.

    At around noon from 2240 meters.

    Significant cloud development yesterday.

    Later in the afternoon.

    Clouds dissipated, bluebird by 20:15 hrs.

    Monday afternoon.

    Big picture Monday afternoon.



Weather Observations for May 8, 2018  taken at 06:00 Hours.

2240 meters    +3, Winds were 5-10 KPH SE--Horstman Hut
1860 meters    +4, Winds were   0-5 KPH SE--Rendevous
1550 meters    +4, 0 cm of new snow, 0 cm in 24 hrs  Base 193 cm --Catskinner

  660 meters    +4, Valley Temp, Max Temp Yesterday was +21.8, trace of precip recorded yest

    As of 07:00 hrs this am we have high overcast to the North and unlimited visibility.



FORECAST:

A ridge of high pressure in a Southwest flow aloft will bring mostly sunny skies to the area this morning. Then FL  will go up to 3000+ meters today with increasing cloud cover later in the day. A cold front will push through tonight with moderate precipitation and the FL slowly dropping to 1900 meters by Wednesday night. A weak upper level low will push through on Thursday before more ridging on Friday into the weekend.The FL will rise too 3500 meters by Saturday.
Guesstimates: 10-15 mm by Wednesday morning, (4-8 cm above 2000 m) 10-15 mm by Thursday morning ( 2-4 cm above 2000 m), 1-4 mm by Friday morning.

    GOES IR image from this am.

    High still in control, low will send cloud our way later this am.

   High pressure this am.

    Clouds will move in from the approaching low.

    Fronts along the coast.

    Overcast and rain for Wednesday.

   Showers later in the day.

     INFORMATION & OBSERVATIONS:

    Bomb hole from explosives testing last week.

    Glide cracks and melting snow in the shallow rocky zones.

    Chateau course is greening up.

    Still considerable.

    Bottom of 7 Th Heaven

    Large cumulus clouds in the afternoon.

   Snow making sensor on Horstman Glacier.

ARTICLES:

Changing Snow Conditions in the Spring: Jake Hutchinson

Measuring snow persistence can help predict stream flow: Science Daily

Types of spring and summer avalanches: CSAC Avalanche Center

Spring Skiing & Snow Safety: Ski UpHill