CONTEST STATUS - Updated: MON ... 09-DEC-19 @ 2:50 PM EST

Winter '19 / '20 - Snowfall Forecast Contests
21st Annual 'Snow Storm' Snowfall Forecast Contest

Snow Storm #2
Synoptiscope in VCP32

Snow Storm #1
FINAL Results here

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19th Annual 'Season-total' Snowfall Forecast Contest
Deadline for entries has passed
Verification period: 01-DEC-19 through 31-MAR-20
The Forecasts here

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Winter '18 / '19 - Snowfall Forecast Contests
20th Annual 'Snow Storm' Snowfall Forecast Contest
FINAL Results here

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18th Annual 'Season-total' Snowfall Forecast Contest
FINAL Results here
Forecaster verification table here

Thursday, November 21, 2019

Winter '19 / '20 - Multivariate ENSO Index (MEI) - Leading Analogs' 500 mb Anomaly Height Composite ... as of OCT-19

Multivariate ENSO Index (MEI) composites of 500 mb (5H) geopotential height anomalies (GPHa) and 2-meter air temperature anomalies (2mTa) for analog winters '53 / '54 ... '59 / '60 ... '69 / '70 ... '80 / '81 ... '90 / '91.

5H GPHa composite
- Ridge-W / Trof-E
- Negative 5H GPHa INVOF Aleutian Is. & positive 5H GPHa INVOF Hawaii ==> EPO  > 0
- Azores-like positive 5H GPHa ==> NAO > 0
- Negative 5H GPHa / lo-latitude trof axis ==> active sub-tropical jet (STJ)

5H GPHa weighted-composite

2mTa weighted-composite


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KEY
ENSO:  nada- (-0.5 < Region 3.4 SSTa <  0); nada+ (0 < Region 3.4 SSTa <  0.5); W- (weak El Niño)
NAO:  sign of D-J-F average
AO:  sign of D-J-F average
PDO:  sign of O-N-D-J-F-M average
QBO:  + ==> west; - ==> east

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