28 Apr 2014

April 28, 2014

    Sunday morning brought a nice surprise of 9 cm of new snow, winter just will not let go!!

    Flurries yesterday morning.

    Breaks in the clouds every once in a while.

    Graupel from some convective activity yesterday afternoon.

    Some breaks at days end!

Weather observations for April 28, 2014, taken at 06:00 hrs.

2240 meters      -3, Winds were 15-25 KPH from the SSW
1860 meters      -6, Winds were 10-20 KPH from the SSE
1550 meters      -4, No new snow. 2 cm in 24 hrs, Base 200 cm
  660 meters     +3, Valley Temperature, 2.5 mm of precip yesterday, Max Temp Yest +8

For the forecast, the cold trough has moved East with a weak upper ridge developing in its wake. The air mass stabilised overnight so expect unsettled conditions for this morning improving during the day,  prior to the ridge strengthening for Tuesday, bringing warmer temperatures and more sunshine. Tuesday will likely start with clouds in the morning. The strong ridge aloft and off shore flow will bring very warm temperatures for this time of the year to our zone for Wednesday through Thursday. There is little consistency in the models for Friday into Saturday but there is agreement on it being cooler. Best guess is a trough developing with a wet cool pattern for the weekend. Guesstimates: Some snow flurries possible this morning.

   As of 07:00 hrs we have broken cloud and unlimited visibility. Clear in Vancouver.

    Satellite image from 13:30 hrs yesterday afternoon. Very convective clouds with nice snowfall.

    Looks like the high pressure will have little resistance to dominate for a few days.

     Very large high pressure with warm temperatures for Wednesday and Thursday.

Last CAC Avalanche Bulletin for the season: Sea to Sky Corridor

How Surface warming affects Dry-Snow Instability: Avalanche Review

Solar Radiation at Earth: Windows 2 the Universe

Return of winter to some parts of Europe: 45 cm at 2500 meters, Cervina

Injured skier rescued from Snoqualmie Pass after avalanche involvement: Washington State

    Nice sucker hole near the end of the day.

    Recent snow profile from the 15 Th.

    The trapper is leaning to more favourable weather in the next few days.

    Image from yesterday morning, you can see the cold occluded front moving East.

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