CONTEST STATUS - Updated: WED ... 21-MAR-18 @ 11:40 AM EDT

Winter '17 / '18 - Snowfall Forecast Contests

19th Annual 'Regular Season'
- Interim Standings ... as of Snow Storm #7 here
- Forecaster Storm Stats ... as of Snow Storm #7 here

- Snow Storm #8: 21-MAR-18
Deadline for entries has passed
The Forecasts! here

- Snow Storm #7: 12-MAR-18
FINAL Results here
Winning forecast issued by: iralibov

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

Wednesday, November 25, 2009

Winter '09 / '10 - Pattern Change

NWP has been hinting at a change in the flow regime for some time.  As early DEC draws near...more and more evidence points toward the arrival of winter wx.

ECMWF height-latitude cross-section forecast for 01-DEC depicts deep layer easterlies near the North Pole...supporting the -AO forecast from the GFS shown above.   Note the long period (into week2) where AO remains well-below zero.

Cold pool aloft shown over central Canada in the 100-mb height-field.  Warm stratosphere ==> cold troposphere.

Excellent antecedent conditions for the season/s 1st coastal teaser.  500 mb heights are a little high but with the 'event' still a week away...taking it one step at a time.  Never want the progs looking too good this far out.

No comments: