PDO

[AfewUniversesBelowNormal]

http://research.jisao.washington.edu/pdo/

I don't think we were ever truly in +PDO 2013-2018, to be honest. (anomalous blip.) It's long term -PDO right now.

[raindancewx]

You had a big spike in the -PDO era in the 1950s too, with the double El Nino of 1957-58 to 1958-59.

I'd call it 2014-2017 positive, 2018 neutral, with 2013 still negative mostly. In the 1950s, it was kind of mid-1957 to mid-1960 that was mostly positive.

1957    -1.82  -0.68   0.03  -0.58   0.57   1.76   0.72   0.51   1.59   1.50  -0.32  -0.55
1958     0.25   0.62   0.25   1.06   1.28   1.33   0.89   1.06   0.29   0.01  -0.18   0.86
1959     0.69  -0.43  -0.95  -0.02   0.23   0.44  -0.50  -0.62  -0.85   0.52   1.11   0.06
1960     0.30   0.52  -0.21   0.09   0.91   0.64  -0.27  -0.38  -0.94   0.09  -0.23   0.17