In addition to significant extratropical PNA-like linear components of Z500 anomalies reported before, in the observations from winters 1949–2014 we also find a Southern Annular-like linear Z500 response in the SH, a significant NAO-like Z500 response in the North Atlantic–Europe sector, and a dipole-like response with a positive Z500 anomaly over East Asia centered near Lake Baikal and a negative Z500 anomaly over Eurasia high latitudes and the adjacent Arctic Ocean. Through AGCM simulations using the CAM4 and GFDL models, we demonstrate that almost all aspects of observed linear and nonlinear responses are reproducible in the Pacific–North American sector, including the PNA-like circulation responses, and the associated significant warming temperature anomaly over northeast North America and wet precipitation anomaly over southern North America. This indicates that AGCM simulations, even without a coupled ocean model, are potentially adequate to examine decadal predictability of climate changes over North America and southern lands associated with PDO/IPO-like interdecadal Pacific SST variability.