Although we recognize that ENSO has different "flavors," and that no two events are identical, NOAA does not officially distinguish between "Eastern Pacific" and "Modoki" El Nino or La Nina. One reason is that La Nina (and weak El Nino) tend to be centered farther west than strong El Nino in general, as I covered in this post. Therefore, it's pretty typical for La Nina to have a Modoki-like appearance.

With that said, I know that some research scientists distinguish the types of La Nina, and it will be interesting to see this particular sea surface temperature pattern evolves. The sea surface temperatures in each of the Nino regions can have some pretty dramatic swings over periods of a few weeks, so it's tough to say how the Nino 4/Nino 3/Nino 1+2 relationships will play out until we get into the fall.