CONTEST STATUS - Updated: SUN ... 21-JAN-18 @ 8 PM EST

Winter '17 / '18 - Snowfall Forecast Contests

19th Annual 'Regular Season'

- Interim Standings ... as of Snow Storm #3 here

- Snow Storm #4
Synoptiscope in VCP32

- Snow Storm #3
FINAL Results here

- Snow Storm #2
FINAL Results here

17th Annual 'Season-total'
Deadline for entries has passed
Forecasters' summary here

Winter '16 / '17 - Snowfall Forecast Contests
18th Annual 'Regular Season'
FINAL results here
16th Annual 'Season-total'
FINAL results here

Sunday, December 9, 2007

Alberta Clipper - 05 DEC 2007

NASA Earth Observatory

An energetic clipper system put 3 - 7" of high-fluff snow on the ground in the DCA - BWI - ACY area last Wednesday. Forecasts generally underestimated the storm-total snowfall.

Temperatures in the crystal factory were -12°C...the low end of favorable conditions for growing stellar dendrites. Other contributing factors were 1) strong veering vertical wind profile...2) 'moist' boundary layer...3) column stretching as the impulse migrated east of the mountains...4) track of the 5H vort max...and 5) SN:H20 of 30:1...all of which were well-modeled by NWP well in advance of the event.

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