Forecasting oceanic rogue waves
There are few known mechanisms that lead to the generation of Rogue waves, such as the ones you mentioned, but essentially all Rogue waves are the due to the nonlinear wave dispersion characteristics of large groups of waves. 

I can imagine one approach to predicting the emergence of such waves is to simulate the evolution of initial wave states with Navier-Stokes based wave models that capture the nonlinear dynamics involved in real time. However, with the limited computational power and numerical techniques we have today, that is currently impossible.

So I think the question is: Do we know of specific signatures in the ocean wave climate, which ultimately give rise to these so called "walls of water"? Presumably these wave patterns could serve as early warning indicators of an upcoming rogue wave event. 

There is indication that the emergence of solitons from modulational instability or dispersion of wave packets occurs in consonance with nonlinear effects and nonlocal coupling giving rise to Roge waves. Thus, an approach based on the spectral analysis of the sea-state as a whole or of particular envelopes of propagating waves may hint at particular wave-field patterns that originate Rogue waves. Please see the sources below for more information on the current state of the art. However, at the moment the answer is that forecasting Rogue waves is still much of an unknown.


  Akhmediev, Nail, et al. "Rogue Waves: Early Warning vs Forecast."
  (2011).
  
  Akhmediev, N., et al. "Early detection of rogue waves in a chaotic
  wave field." Physics Letters A 375.33 (2011): 2999-3001.
  
  Onorato, Miguel, et al. "Rogue waves and their generating mechanisms
  in different physical contexts." Physics Reports 528.2 (2013): 47-89.