RE: Regular or Modoki El Niño?
It is difficult to give a definitive answer to this question because El Nino types do not separate cleanly into canonical or Modoki types. As this post describes, the location of maximum sea surface temperature anomalies varies rather continuously from east to west, so there is no clear separation between the two types. With that said, and also consistent with this post, the weaker El Nino episodes tend to be centered more toward the central Pacific (Modoki-like), and this event is no exception. For researchers who study the differences between canonical and Modoki El Nino, I'm pretty confident nearly all will characterize the current event as a Modoki event. However, keep in mind that there are different methods for distinguishing ENSO "flavors," so we cannot expect universal agreement for all cases.