CONTEST STATUS - Last update: FRI ... 14-JUL-17 @ 8:30 PM EDT

Winter '17 / '18 - Snowfall Forecast Contests
19th Annual 'Regular Season'
Season starts when the first flakes start a'flyin'

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17th Annual 'Season-total'
Entries accepted between 01-NOV-17 and 30-NOV-17
Verification period: 01-DEC-17 through 31-MAR-18

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

Wednesday, January 5, 2011

Winter '10 / '11 - Stratospheric Warming - Take 3

Appears associated with the ECMWF's forecast for hi-latitude blocking over Siberia beginning 1/11/11.  Note the dramatic weakening of the stratosphere's polar vortex between the initial panel (west @60 m/s = ~120 kts) and its reversal on D+10 (east @15 m/s = ~30 kts).

Also depicted on D+10 zonal mean wind chart are deep layer easterlies throughout the troposphere suggesting a strongly negative AO.

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