The Utility of the Bering Sea and East Asia Rules in Long-Range Forecasting

Table 2

A list of variables that correlate to Pacific or Atlantic Region monthly blocking occurrences and days at three different levels of statistical significance from January 2011 to December 2016.

(a)

Variable	Correlation to Pacific blocking	Correlation to Pacific blocking days
At 99% confidence level (>)
West Pacific Oscillation	−0.34	−0.35
Midwest monthly temperature anomaly	−0.32	−0.39
At 95% confidence level (>)
Atlantic Region blocking	0.25	0.24
At 90% confidence level (>)
None

(b)

Variable	Correlation to Atlantic blocking	Correlation to Atlantic blocking days
At 99% confidence level (>)
West Pacific Oscillation	−0.34	−0.35
At 95% confidence level (>)
Pacific Region blocking	0.25	0.24
NAO	0.20	0.27
At 90% confidence level (>)
Midwest monthly temperature anomaly	None	−0.19
PNA	0.16	0.16