That's the million dollar question at the moment. I agree that the North Pacific Ocean shows basically the opposite anomaly pattern compared to June 1997. 

Keep in mind too that we might see changes afoot when we get closer to the winter months... During El Nino, the North Pacific jet stream tends to shift equatorward and extend eastward (more on a forthcoming blog post), which *could* create the conditions for more southerly flow (from south to north) along the West Coast of the U.S.  That can then help reduce the cold water upwelling along the shores and warm the surface waters.   We shall see.