brooklynwx99

wouldn't shock me to see blocking return in some fashion in mid-late March. a brief reversal of 10mb winds already occurred, and another is expected to occur during the first week of March. the upcoming 500mb pattern fits that of the 2018 and 2023 blocking events quite well, which were also from SSWs. not sure if it means any more winter weather, but it's something to note

it wouldn't shock me to see blocking return in mid to late March. whether that means winter weather or not is a different story, but it wouldn't be surprising at all IMO

look at the decade before with the 33.2" average and you can see why we likely regress to under the ~29" 30-year average this decade

hell, even that favorable pattern in mid-Jan looked like a good Nina configuration. AK ridge with no Aleutian low to be found. along with the historic cold outbreak in the Rockies and Plains. so odd

1973 was definitely the best match out of those winters, especially given the -PDO. even then, there's still barely any low pressure signature where there should be one. would have made a difference if the blocking had worked out, but it makes sense that we would see one of the biggest medium to long range pattern collapses in recent memory

lol the Aleutian / Gulf of AK low is non-existent. absolutely infuriating. just not even close to the others, even the ones that did torch

PDO definitely has something to do with it, just thought the Nino would be a bigger factor in forcing a +PNA

all of the other super Ninos had at least some kind of persistent low pressure in the GoA or nearby. seems like 1973 was the best fit, but this year still has much less of a signature there

hell, even the great pattern that developed in mid-Jan looked like a blocky Nina pattern. there was a historic cold outbreak in the Rockies, which is not supposed to happen in these borderline super Ninos. something is off this might look like a super Nino on the DJF temp aggregate, but it's like getting a multiple choice answer right without showing work. Dec is the only stretch that behaved like it should have. like where the hell is the low in the GoAK or Aleutians at all? it just doesn't exist on the mean

this is so odd... flat, strong Aleutian high in a super Nino at the end of Feb. even the warm stretches in 1973 and 1983 were warm because of a hyperactive Gulf of AK low, not because of a potent Aleutian ridge

this is positive, no? you'd think you'd keep the extended jet here, but it is poleward into AK... go figure. then it looks negative after, so the retraction makes sense

hell, even the favorable look this January looked like a great La Nina pattern

yes, but there's subsidence over the MC and the eastern IO with the MJO either null or in Phases 7, 8, or 1 (probably null). the lack of a potent MJO still shouldn't lead to a massive retraction. it's so odd

if this was a common occurrence, you might be able to say that, but a sample size of one isn't that convincing. the reason i called it a cop out is because you can blame basically anything on climate change in some way. it happens all the time, snow or not. people did that in 2013-15 when the West was in a huge drought, calling it the "new normal." how silly that looks now i'm sure it has something to do with it, but it could also be annoying sub-seasonal variability as well. just not enough data. they're definitely going to do some research on this winter, that's for sure

lol that's a cop out

yeah, i get the mechanisms like the jet retraction, but like... why? a -PNA caused by a flat Aleutian ridge is the last thing I would expect. even the warm super Ninos had this timeframe warm because of looks like this. absolutely maddening

this is so lol worthy at this point, I don't even know where to begin. what the fuck is THAT why is there a strong, flat Aleutian ridge at the end of a strong Nino February? so annoying

really nice 700mb forcing. can see the secondary FGEN banding well on the 3km

you actually do have a lot in place... vort moving out of the W US, anomalous PNA ridging, a weak but present Davis Strait block to displace the TPV, and an Atlantic trough that almost provides a sort of pseudo 50/50 low

this just smells like an overperformer for a lot of NJ… large DGZ, northern FGEN band, and a good airmass these systems love to overperform on the northern edge given the FGEN involved. seems like a weaker version of 1/7/22. whoever gets into this 700mb FGEN is getting 15:1 ratios easily. hell, look at what happened earlier this week with the northern fronto band

most of it was the storm earlier this week not cutting, so we missed the main wave break that set everything in motion. the Scandinavian ridging also crapped out. really bad luck on both fronts, and it's probably the most complete failure on medium to long range modeling I have seen in quite some time. a shame

yeah, there's nothing stopping that from happening

slight tick in the NS buckled the entire trough. these do indeed like to amp up as you head towards game time when there isn't ample confluence

notably so

there is literally no way to know if this will continue until it does. it's just speculation otherwise. the climate is an average of the weather, after all