4 May 2020

May 4, 2020

    Past 3 Days:

    Friday May 1, 2020. 16:00 Hrs. + 15 at 660 m. -2.1 with a 5-10 KPH East wind at 1835 m.


    Satellite image from same timeframe as above image.

   Big Picture Friday afternoon.

    Saturday May 2, 2020. 12:00 Hrs. +8 at 660 m. +1.5 with a 15-25 East wind at 1835 m.

    Satellite image taken from same timeframe as above image.

    Big picture Saturday at noon.

    Sunday May 3, 2020. 14:00 Hrs. + 9 at 660 m. -1.4 with a 15-40 KPH South wind at 1835 m.

    Big Picture Sunday afternoon.

    Sunday Afternoon


Weather Observations for May 4, 2020 taken at 06:00 Hours:

2240 meters    -8, Winds were 5-10 KPH S--Horstman Hut
2180 meters    -6, Winds were 5-10 KPH SE--Whistler Peak
1860 meters    -7, Winds were 5-10 KPH ESE --Rendezvous 
1835 meters    -6, Winds were   0-5 KPH E--Round House
1650 meters    -6, 0.8 mm in 12 Hrs, 4.7 mm in 24 Hrs, Base 218? cm --Pig Alley
1560 meters    -4, 1.6 mm in 12 Hrs, 4.8 mm in 24 Hrs, Base 140 cm--Catskinner
  660 meters     0, Valley Temp, Max temp Yesterday was +9.5, 0.5 mm of precip yesterday.

    As of 08:00 Hrs this am we have high broken cloud and unlimited visibility.


FORECAST:

Unsettled today as a weak ridge is slowly pushed out by a weak front in a Westerly flow aloft. Increasing cloud cover by this afternoon with a slight chance of some spotty showers tonight. The freezing level could go as high as 2000 meters today dropping back down to 1200 meters by tonight. Unsettled on Tuesday as well with a mix of sun and cloud. A cold front arrives Tuesday night with periods of light precipitation starting early Wednesday morning drying out by Wednesday night. Ridge begins to build Wednesday night into Thursday with mostly sunny weather. Ridge weakens slightly on Friday with a mix of sun and cloud. Looking like a dry weekend. More on that in Friday's post. Guesstimates: 0-trace by Tuesday morning, 2-6 mm by Wednesday morning, 3-6 mm by Thursday morning, 0 mm by Friday morning.


    GOES IR image from this am.


    Unsettled today with increasing cloud cover from the low.




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    Fronts along the coast.

    Unsettled Tuesday as well, weak trough, onshore flow Tuesday evening.







    Low in control for most of the day on Wednesday.

    High pushes in Wednesday night.

    High pushes in on Thursday.

    Looking nice on Thursday.



    AVALANCHE ACTIVITY:

    Hiker had to be rescued after avalanche on Horn Peak, CO. Article below.            Custer SAR Pic


    Teetering Left Debris.

    Way Stupid, likely from April 30. 2020. Looks like a cornice drop.

    Whiplash, image taken Friday am May 1, 2020.

    Activity from April 30, 2020 in West Bowl..

    Big cornices on Flute Peak, image taken on Sunday morning, May 3, 2020.



    INFORMATION & OBSERVATIONS:

    Friday May 1, 2020. Am shot. Awesome day High in the valley was +15.3 Deg C.

    Friday evening.

    Cool moist Saturday morning.

    Having a shower. Light to moderate precipitation for most of Saturday. Rain stopped at 21:45 Hrs.

     14.2 mm recorded at 660 m, 16.3 mm recorded at 1570 m, 18.3 mm recorded at 1650m, Saturday.
      Squamish received 22.1 mm of rain Saturday.

    Sunday morning. Unsettled weather with a mid day shower.

    Fresh dusting in the alpine, Sunday am. 2 cm of new reported at Pig Alley after the FL dropped.

    Male Hooded Merganser, Lost Lake.

 
Last light Sunday night.


0.5 mm recorded at 660 meters Sunday.




VIDEOS:

Fraser Valley Farm Forecast: David Jones


ARTICLES:

Injured Horn Peak hiker rescued after avalanche: Custer County SAR

Ski Tourer carried away by avalanche: Austria

Special avalanche advisory in effect for Colorado mountains on this past weekend: OutThere

The Massive Ice Avalanches of Mars: AGU

Monthly Snow Report--May 2020: J2SKI

April Ends, April weather begins: Austria

Liquid water content and water distribution of wet snow using electrical monitoring: Cryosphere

Ocean warming is causing massive ice sheet loss in Greenland & Antarctica: NASA

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