It's not too surprising then that this index could struggle with an east based El Nino that developed in the absence of +PDO/+NPMM. This should not detract from the strength of this event, which is being adequately measured by the ONI (unlike what the original poster claims). pic.twitter.com/mfqSEz2edg

— Deelan Jariwala (@WxTca) November 8, 2023