Great thread, hoping to get more involved with the seasonal forecasting this year. I did last year but 2025 was pretty wild. Part of the problem is I get too much into my head. Anyways, I've gone back to the drawing board when it comes to creating ENSO composites. I've read made my lists of EL Nino, La Nina, and ENSO neutral using the ENSS-ONI, ONI, and RONI, however, I am not sure I want to go ahead and create a list breaking down by strength.
Through the journeys and research and studies, there is a whole world of accepted definitions when it comes to ENSO and classifications beyond the typical ONI and SSTA thresholds we're all familiar with. When digging into strength classification I would like to incorporate more of the SOI and MEI into the classifications.