brooklynwx99

this Nina is also on life support with westerly anomalies forecast across the ENSO basin to close out the month... this will halt the drop in ONI or even lead to a slight warming wouldn't be shocked if we saw a cold neutral ONI with a weak Nina RONI in the -0.5 to -0.8 range

I agree there, it is not a perfect analog by any means, but the similarities also can't be ignored. just one analog out of many, it's worth consideration I'd probably take it over the strong Ninas like 1998-99 since there's almost no way the Nina gets that strong, even with RONI

13-14 wasn't one of my top analogs, though it does have some merit... very similar with solar, and the summer pattern / temps thus far have been very similar

the CFS is probably the best case scenario for winter lovers in the east... the Aleutian ridge has much more of a poleward component and allows a bit of a +PNA to develop. I am very skeptical of any kind of prolonged +PNA with the state of the PDO, though this does echo Raindance's 2013-14 analog fairly well

I don't think we're going to see much winter success until the PDO flips, though it seems we're approaching the end of the cycle... we've been in a -PDO regime since the late 90s and these cycles usually have a 20 year lifespan

the farther south you go, the more luck is a factor as well. people don't really like to admit that since it isn't really quantifiable, but it's true

the CFS control runs on WB are just one run. TT averages the last 12 runs... WB isn't "wrong," it's just not an average. people just post the cold control runs

it would be hilarious if this winter ended up good for many people even though there were vibes and evidence to the contrary. I remember 20-21 was like that for the record, I do not expect a good winter in the NE (especially outside of New England), but it would be funny... and definitely welcome

yeah, that pattern at the end of December could easily have produced a major storm. TPV just phased in over the Rockies… I would certainly roll the dice with that setup again

if we are indeed using RONI over ONI, wouldn't a cold neutral ONI reading act like a weak La Nina? for example, if we bottom out at -0.3, the RONI could very well be around -0.7. the RONI was -0.25 at the lowest in DJF 2002, so I'm not sure that this logic works if the cold neutral ONI forecasts indeed verify if we really want to use cold neutral analogs like 2001-02, we would probably actually have a warm neutral ONI around +0.2 that "acts" like a -0.3 winter given RONI cooling things down not to say that 2001-02 is a bad analog by the way, it's not

still thinking we're getting a weak to perhaps moderate Nina, but the higher-end moderate to strong event per ONI looks quite unlikely at this point however, even if we get something along the lines of a -0.5 trimonthly ONI, we could still get a RONI reading that's in the -0.9 to -1.1 range

I usually don't include volcanic activity in analogs. should I? maybe, but there's already a lot to juggle. credit to those that do it, though

i had 1983-84, not 1982-83... it's pretty low on the list regardless. might not even include it once we get into the fall. only really matches ENSO and not much else, but again, just wanted to cast a wide net and narrow down

RONI for AMJ is -0.2 while the ONI is +0.4, so you can probably lop off half a degree from the ONI going forward. tough to explicitly forecast that, though, as conditions can change as the year goes on

I have some prelim analogs. tried to cast a rather wide net and it'll get whittled down as the summer goes on Going with 2022, 2021, 2020, 2017, 2016, 2013, 2011, 2010, 2008, 1999, 1998, 1988, 1983. Years in bold are doubly weighted. Overall, looked at ONI/RONI, PDO, QBO, summer 500mb so far, and solar, weighted in that order. Pretty happy with the way these look. Dec has some blocking and a more poleward Aleutian ridge that's often the case in initially east-based Ninas. We then transition to a torch by Feb as the Nina migrates to a more central-based look.

13-14 actually averaged a PDO of -0.68 for DJF 2014. negative, but trending positive and likely not as negative as we'll see this year. 14-15 was the big +PDO winter

I agree that those things are true. my point was that there are other variables that impact winters. saying that weak Ninas just aren't cold and snowy in this climate is a bit reductive

yeah, there will be a winter at some point that's just a parade of juiced cutoff lows exiting the OH Valley, just a matter of when. in the meantime, a lot of BS will have to be endured. I think that's pretty safe to say. we've seen the West get periods of continuous anomalous troughs over the last few years

i don't think it's quite as air tight as this... I agree that it will be more difficult to see cold and snowy winters with -ENSO given the propensity for forcing to plant itself in the MC, though there is always variability 2020-21 was a central based moderate Nina with a RONI slightly more negative than ONI (OND RONI was -1.56 compared to ONI of -1.3). one would think that the year would be a catastrophe, especially given the -PDO, but it was a big time year. the WPAC warm pool was also in place by then

even in 2022-23, NNE (and even parts of CNE) had a pretty torrid February if I remember correctly

I'm not expecting much for the E US this year... the strong -PDO and general progression to a more central-based event are certainly mitigating factors. would be surprised if there was AN snow for NYC, certainly DC. Boston could actually have a decent year as they do in Ninas with that being said, this winter does look to begin east-based, which may make December pretty interesting. I'll start digging into some more concrete analogs over the coming month or so

speaking of stats, I think part of it is also just crushing regression to the mean. there were many winters with big coastals (2014-15 being the prime example) and I think we're crashing back down to offset those years. CC plays a part, of course, but I think stats are just as big of a factor

this has 19-20, not 20-21... summer of 2020 was one of those high ACE years

CSU is now forecasting 230 ACE... this is probably one of the only variables that actually looks good for E US winters. otherwise, slim pickings

the thing with Nina is that you can have that Aleutian ridge break more poleward and give us legit cold air into Canada. Ninos have no such benefit if we do end up with a more east based event, I’ll be a lot more optimistic, as at least we could see the ridging move over AK. as of now, I’m still expecting a pretty lame winter from NYC south. Ninas can be quite fun for you guys, though. especially up by you