Theoretically any of this stuff in the warm sector could be spinning tomorrow. Fast storm motions too. LOT could have their work cut out for them, potentially dealing with quite a few troublemakers simultaneously.
I’d argue our period of record is too short to say this confidently.
- Until 86/87 & 87/88 it was unprecedented for a Niño to span two seasonal cycles without attenuating during boreal summer.
- Until 2016 it was unprecedented for the QBO to skip a heartbeat, metaphorically speaking.
- It was unprecedented to go 13+ years without a single trimonthly ONI below -0.8 until 1956/57 -1969/70.
A lot of things are “unprecedented” in a limited sample of data. Until they aren’t.