FWIW (and it's probably not worth much IMO) since 1985, the years listed below were Ninos that were preceded by double dip (20-21, 21-22, and 22-23 don't count as that's a triple dip) <0.5 PDO Ninas and/or neutrals (at or below 0*C). 09-10: DCA: 56.1" | IAD: 73.2"
02-03: DCA: 40.4" | IAD: 50.1"
97-98: DCA: 0.1" | IAD: 5.9"
86-87: DCA: 31.1" | IAD: 42.7"
If we were to remove the ones that were too strong/weak to fit that 0.5-1.2 category, we're left with this. 02-03: DCA: 40.4" | IAD: 50.1"
86-87: DCA: 31.1" | IAD: 42.7"
IMO it doesn't matter because we're dealing with such a small sample size but at least it's worth taking a look at. Probably belongs in the ENSO thread as well lol