20 Dec 2013

December 20, 2013

Great sky yesterday morning.

High cloud moved in as soon as the sun came up, stars were out at 06:00 Hrs.

Weather observations for December 20, 2013 at 06:00 Hrs.

2180 meters    -10, winds were 30-40 KPH from the SSW
1860 meters    -9,   winds were 20-30 KPH from the S
1835 meters    -8,   winds were 15-45 KPH from the S
1650 meters    -7,   8 cm of new snow, base 88 cm
1550 meters    -8,   8 cm of new snow, base 64 cm
  660 meters    -4,   Valley Temp, .3 mm precip yesterday

For the forecast the warm front will pass through our zone today with relatively dry conditions in its wake for Saturday into Sunday. Another weak front will arrive Sunday evening with light-moderate snow above 1200 meters. Flurries for Monday, before a dry North West flow aloft will begin to bring unsettled conditions into Tuesday-Christmas. Guesstimates 3-5 cm today; Flurries for Saturday-Sunday; 8-10 cm for Monday morning; Flurries on Monday.

Flurries can be expected for Saturday-Sunday.

Forecaster's are predicting the most unstable conditions in 20 years: Verbier

Italian Alps melting at an unprecedented rate: Science Daily

50 years of serious fun: Hotdogging

Bridger Range avalanche conditions considered: High

Avalanche Forecasts App: Sebnaware

Cold Snap cause for concern for snowpack in Whistler Area: Question

Thicker clouds started to form around noon.

Flurries began around 15:00 Hours. 

Infra red satellite image from 16:00 hrs December 19, 2013.

The NAM forecast has Monday much warmer then the GFS Model below. Freezing level will be around 1500 meters Monday morning, dropping to the Valley by Monday night. 

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