Winter '14 / '15 - Above Normal Snowfall and the MIA Northern Annular Oscillations

NYC
13-DEC-60

Number of days between 01-DEC and 31-MAR:  121
Number of days between 01-DEC and 31-MAR where

NAO <= 0:  9
NAO <= -1:  0

NAO >= 1:  50
NAO >= 1.5:  18
NAO >= 2:  2

AO <= 0:  28
AO <= -1:  9
AO <= -1.5:  2

AO >= 1:  60
AO >= 1.5:  48
AO >= 2:  32
AO >= 3:  11
AO >= 4:  4
AO >= 5:  3

PNA >= 0:  85
PNA >= 1:  11
PNA >= 1.5:  0

Number of NEWxSFC stations with at least
100% normal snowfall:  22
150% normal snowfall:  9
200% normal snowfall:  3
250% normal snowfall:  1



AO - NAO - PNA (daily)
Meteorological winter '14 / '15

AO - NAO - PNA (7-day moving average)
Meteorological winter '14 / '15

AO - NAO - PNA (30-day moving average)
Meteorological winter '14 / '15

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Something happenin' here.
What it is ain't exactly clear.