CONTEST STATUS - Updated: SAT ... 17-MAR-18 @ 8:15 PM EDT

Winter '17 / '18 - Snowfall Forecast Contests

19th Annual 'Regular Season'
- Interim Standings ... as of Snow Storm #6 here
- Forecaster Storm Stats ... as of Snow Storm #6 here

- Snow Storm #8
Synoptiscope in VCP32

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

- Snow Storm #6: 07-MAR-18
FINAL Results here
Winning forecast issued by: Donald Rosenfeld

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

Tuesday, December 25, 2012

Winter '12 / '13 - January 2013: Week One Outlook

From today/s PSD GFS ensembles...Week 2 anomaly forecasts (VT centered on 05-JAN-13).

Area 1 depicts the Pacific/s polar jet at 250 mb riding up and over PNA ridge.

Area 2 is the sub-tropical jet (STJ) phasing with the polar jet over the upper MIssissippi river valley.

Area 3 is the negative height anomaly at 500 mb located over New Foundland...CN

Area 4 shows the 850 mb temperature anomaly drawing high-latitude cold air into the NE on the backside of the Newfoundland LOW and the warm advection onto the Greenland ice sheet which in turn would induce or strengthen a blocking HIGH and negative northern annular oscillation indexes (AO; NAO).

Area 5 highlights precipitation anomalies from Mexico to the mid-Atlantic states aligned with the STJ axis.  Note the northern edge of the anomaly coincides with negative 850 mb temperature anomalies.

Amplified flow + short wave energy + cold air + moisture = forecast for snow

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