There a lotttt of maybes, lol Now...we went almost a decade with little to no -NAO. So we had one in 2018 that worked great...except it was in March. Then 2021--I feel like that one could be a logbook candidate. Yes it was a Nina, but no clue why it didn't work. Then we had what happened in December.
So that's three examples with -NAO...one worked, two didn't. Sample size too small?...