Typhoon Tip

I got a question for those individuals ...or anyone else, posting precipitation anomaly products... Are those 'melted' equiv. ? I suspect so... for science utility, snow totals really don't mean as much for climate as the precipitable water - which either snow or rain is equally rooted... which thus requires a standard mass format... Liquid is that rest state - so... melt the snow, and call it all rain? I don't typically ever put much stock in those precipitation products because I noticed in the 1990s ...then more tacitly during the early 2000's...any prediction, no matter how touted the source, was 100 % always wrong ... hands thrown... It's never f'n right folks... ever - and that may be some frustration there ... fine, but the skill, at least from what I have been exposed to, just doesn't validate the effort. I may not be completely right? - this isn't a declarative - Just from what I've seen over the years and years and years of it ...it's on par with the Farmer's f'um Almanac if you ask me... Which ... I suspect their extra top secret recipe ...is really nowadays in modernity woken up to science by merely employing what everyone else does. They have to be... unless they have some pulsing, glowing emerald that hums and spines information lighting to some sort of mystical console that then tells them their forecast fantasy ... But then again, they'd have a bone to pick with that god because that god must be a f'n dumbasstic moron then because the FA sucks asshole too - My advice...? Don't .... I'd suggest going with temperature alone ...and figuring that whatever falls, it'll edge heavier than the 50 or 100 year mean - relative to phenomenal circumstances - due to GW -attributed ambient increases in PWAT feeding anything that's animate in the atmosphere....

...that said, the Euro does at least set the table for an usual event ... It is interesting to see that with the Euro's pretty clear bias of meridional flow exaggeration in its extended range ( in this case ...way out there, notwithstanding), vs the GFS ...which has a velocity rich bias causing a longitudinal stretching all the way up to the R-wave scales ... ( causing an opposing end state usually ) they've still managed to animate similar deep full latitude trough anomaly through that spatial-temporal range. The GFS happens to have a hurricane ...and as we all know, has been occasionally entangling one precariously near or into said trough for many cycles now - just not consistently in positoin or time but ...that's a forgone conclusion when modeling day 12 and beyond ( geez) ... Anyway, should the Euro come around to the growing consensus for some form of western Caribbean TC ... any said realization probably also feels the steering influence and gets evacuated out ... it doesn't take a huge leap of visionary insight to imagine any such feature as being rail-roaded along a similar precarious circumstance. So ...in simple terms, the period of time should be watched. Either way, just noting... according to recent trends/modalities of CPC's various teleconnectors.. there is a concerted rising motion in the PNA and NAO out through week two - that tends to herald a time for troughing over eastern N/A. Plus, climo for TC and trough marriages is hot through late November anyway ...so there's that -

Well, ... to point out the obvious - The GFS has a hurricane as a coherently separate phenomenon ... captured and evacuating up astride the EC on that frame... Contrasting, the Euro does not carry said feature - at all. The Euro's depiction is a purely en route to formulating an extratropical cyclogenesis, with perhaps an argument not worth having for some sort of weakly establishing yet doomed TD in the process of being evacuated out of the subtropics amid the barotropic conveyor ... that's a bug just before the windshield at 70 mph there.. Typically... full bird matured hurricanes and extratropical cyclones do not present with the same pressure pattern morphology on a weather map - it's like the difference between looking at a galaxy from a billion light years away, vs a tight, close spectral analysis of the quasar at said galaxies nucleus ...where the gradient of space time is severely sloped. But in more practical terms, the ballast of the upward vertical momentum of TC is near the core; where as, baroclinic lows ...which derive their mechanical forcing from larger synoptic jet mechanics ..are by virtue thus spread out. Sometimes, ... a uniquely intersecting jet fields will pass over unusually, vertically sloped low level thickness gradient...causing very upright air parcel motion where said jets happen across that gradient. The diffluence requires huge restoring mass to lift, but as it passes over the upright structure ... this gives the UVM exceptionally efficient conversion of psuedo-adiabatic heat release into velocity - and that will drive excessive internal pressure falls: 'bombogenesis' as it were... This may transiently take-on a pressure pattern structures that mimics the orientation of tropical cyclone phenomenon - but usually as the low "maxes" out, the internal pressure may stabilize, while remaining deep, and associated wind/response both expand so there is more proportional layout between the intervals between the core and the outer periphery of the low.

James .. they may vary slightly (or not...) from agency to agency but the Climate Diagnostic Center labels them as: Pacific North America Pattern (PNA) [(15-25N, 180-140W)-(40-50N, 180-140W)+(45-60N, 125W-105W)-(25-35N, 90W-70W)] North Atlantic Oscillation(NAO) [(35-45N, 70W-10W) - (55-70N, 70W-10W)] Western Pacific Oscillation(WPO) [(25-40N, 140E-150W) - (50-70N, 140E-150W)] Eastern Pacific Oscillation(EPO) [(20-35N, 160W-125W) - (55-65N, 160W-125W)] (Couresy: https://psl.noaa.gov/forecasts/reforecast2/teleconn/ ) However, any variances between agency definitions would likely not reflect a difference in correlation significance - meaning...doesn't really matter. Note, due to the recent upgrades in the GEFs ensemble system, CDC's coverage/calculations necessarily need to be reconstructed; however, I shared a correspondence with personal at that office recently who indicated that there is no present funding for such an operation - therefore, public URL access to CDC - derivatives is discontinued pending further notice. Nevertheless, these are the domain spaces that were employed for the GEFs, and though I cannot confirm this with certainty .. it is likely that any new system won't change these geographical areas - it is the data density that is the cause for the product suspension and revamp necessity. The ECMWF and/or UKMET ( super blend..etc) may or may define their domain regions the same way.

NCEP reported that winter that season, it was not well coupled until very late in the winter months ...don't blame messenger ... I remember the pattern over N America not resembling the El Nino very well - and when I read that...I was like, well yeah. - not to mention...it was a supposedly an off the chart hot EL NINO and it had trouble coupling in their estimation. I don't believe those MEI number reveal the ENSO was driving the global patternization though - you can tuck those MEI numbers into a maelstrom dominated by super circumstances that mute its existence. The MEI is still just a band within narrow latitudes, well inside the HC's termination latitudes with the westerlies - which is where the pattern is defined over top all that. MEI may have been coupled ... but the atmosphere around it was not demonstrating its exertion - that's the point. And, the climate zones were being less impacted, concertedly, too - again...that's not me. Also, I wouldn't claim coupling was not a factor... It's a matter of how much so - ... as usual. There are no 1::1 correlations... maybe what was once a .64::1 correlation is now .38::1 thing ...

If it is coupled ... sure... But expanding HC doesn't mean it can't couple ...just that thermodynamically in an oceanic-atmospheric couple environment, if the warm HC does manage to couple with a warm ocean, the gradient where the HC terminates with the westerlies is still N of where the coupled region was ... prior to 2000 and so forth... But a warm expanded HC makes it harder for coupling because the thermodynamics is differentiated less - If/when the latitude of the HC terminations/gradient N, that alters the R-wave structures around the hemisphere ...either way - But during the great super Nino that happen 4 or 5 clicks ago now... ( was that 2014 ?) NCEP's ENSO publications routinely stated ...all year long, that the atmosphere was not appearing to be actually coupled to the ENSO state - pretty much that is 95% quotable string as they even stated it... Finally...toward the third week of February, that seemed to change - and they even said, 'finally... ' But the HC structure is not being dictate by ENSO...that's not true - nope. The HC is expanding ... because warm total atmosphere stores more water vapor in gaseous form, and the tropics are storing more thermally - the ENSOs are engulfed inside that bubble. It's really like said bubble used to expand( contract) by warm(cool) ENSO's ... but since the HC expanded beyond the ENSO belt ... it's not clear the HC is responding - as NCEPs noted and these evidence of breakdown climatology have also been materializing... Outside of my hypothesis these are true ..but they fit -

Anyway, jokes and speculation aside... Though I have my convictions emerging about that other shit ...I think in the meantime we have a N-stream dominate winter by appearance. Here's the trouble though - I don't know if STJ's are also problematic in an expanded HC thing ? Because ... seems with the gradient being pushed/relocated N of 1700 - 1980 ... more so since 2000 ... that starts exceeding those latitude where we see that particular feature - the impetus behind this reasoning is that for one ...I am some kind of catastrophic loser with no life ... why am I f'n typing this crap ... but two, gradient in the troposphere derives the axis of westerlies/Jet streams by classical convention -

Sure - if one assumes the modoki this and the NINO 1+2 that are still AS effectual in forcing ... maybe - sure... I'm not here to make declaratives and aver these hypotheses need preclude the scientific process or nothin' lol - I'm just saying, Modoki shmokey ... personally? I hunch ENSO over all, thus certainly idiosyncrasies contained within, are being rendered less forcible to the entirety of the planetary integral. Oh,... I bet this is the insight of the young Met century that chaos will now go out of its way to happenstance/circumstantially make it only look less true by metaphysically constructing a dildo... I mean a winter that actually fits the predisposition. Everyone goes seeee ... lowers their guard, and the oceans stop C02 fixing and the extinction event is complete - muah ahahaha oh, sorry - wrong subject

Mmm ...yeah, wasn't gonna chime in on that but ... that seems to me to be a simple matter of 'momentum storage' ... Other intermediary obtruding forces can mask or mute (transiently) those forces that have a longer integrate curve/weight. It's like ENSO ( prior to 2000 I should add ) was like a revolving door, and summer temporarily holds the door against the motor, but soon as the kid stops f'n around and playing with the door, it resumes it rotation - This is a useful intellectual exercise - it sort of adds support to what I was just talking about - pretty much exactly, too - What does summer do to the hemisphere? It neutralizes gradients ( in general...) the ambient gradients are lessened...the flow unwinds and becomes more nebular because the velocities are less ( A is not longer motile toward B ) ... and that hides the ENSO by cutting it's integral forcing - It's almost a circumstantial proof right there ... if we extend the HC beyond the kiss-point of the ENSO with the westerlies,... that's sort of cutting it's integral forcing ability. Same thing in principle.

Maybe it is because the ENSO SST distribution is no longer AS usurping as it used to be in the total integrated machinery of the planetary circulation result. As an extension ... and possible connection to GW, coincidences suck in physics... usually, there's causality connection; and it appears more so than merely coincidence that recent ENSO events, having not been registering as impactful along/at normal climate pathways as they were prior to the recent empirically proven GW acceleration ..., is just such an annoying coincidence ...which by the way, the advent of those failures has been concurrent with recency - My hypothesis is that the expansion of the tropical/subtropics found here : https://science2017.globalchange.gov/chapter/5/ ... is at least partial in that causality connection. The longer version: The idea of that expansion of the HC isn't my personal work - so ...maybe start considering that ( not you personally but in general - ). But, changing the previous ocean-atmospheric modal exchange is as good as any initial educated/existentially rooted guess. It's just to gin up a scientific discussion if not actually process therein, to formulating theory as any I've heard... Which, unfortunately ...isn't a lot - and I admit to that frustrating me. These are non-arbitrary substantive observations being made by a much larger bevy of sources other than that just being made by me ... A ... flows toward B. There's a gap between just being statistically/numerically reliant, and understanding that gradient is everything in Universe. If there is no movement of A --> B ...entropy is infinite and there is nothing? This isn't mere philosophy. All actions and our ability to sense " reality" itself, are because of cause and effects an essentially infinite solution of forces attempting to get to a rest state... That includes both why the wind blows, and... one's ability to sense the wind blowing. This adolescent truism seems to escape us when it comes to the teleconnectors and the statistics; when we assume +1 NAO means this in the atmosphere for us, that sort of unwittingly acts as though that +1 is a force in itself. It's not. It's a result over time then averaged. But the nature of A is no longer stable. And that changes how A moves toward B ... That change = seasonal forecast pieces of shit for not seeing it. SO... tfwiw - ... If the HC band expands above the previous interface of the ENSO ocean-atmospheric coupled region, that is a whopper change in how A relates to B ( which in the context, 'B' refers to the domain outside the ENSO o/a realm) .. It's like ( haha ) a stable marriage. It's runnin' along fine, but then B becomes an alcoholic ... an abusive one at that... Meanwhile A is still doing what A always did ( in this metaphor, oscillating between warm(cool) phases of ENSO), but the changes in B ... means the nature of the marriage has changed - what we do when we ignore expanding HCs and GW and all this shit ...is we assume that B can be an abusive asshole alcoholic and it won't change the nature of their relationship. WRONG I admit to having noticed gradient saturation and higher velocities/R-wave stretching and progressive patterning bias over the last 15 to 20 years as becoming more discerned over the course ... but, this science publication above shows that said reality outside of said frame, is ALSO onto this - and you should be too This regressive reliance is not showing evolution or learning ... I realize that's hard to do in a pathology that is hardened across generations of other consistencies...but therein is the problem. We've lost the consistency - I don't intend this to be an admonishment ... people really need to start questioning the % forcing capacitance of the ENSO's longer duration oceanic-atmospheric coupled teleconnector when gradient changes how it integrates.

Yeah ...I guess in fairness the other guidance' have a "dent" running along the pressure contouring out there S of Bermuda... Probably TPC will have a new yellow X around 55W/30N .. should this next cycle or two continue to carry said dent west.

CMC is new ... it's organizing the garbage out around 55W/25N into TC and moves it rather climo anachron west .... threatening a SSE approach to the EC

It's an interesting turn of phrase 'recency bias' I know you don't mean anything by it ...but 'bias' tends to imply an attitude against something, particularly in the parlance of an internet "water cooler" social media diversion - haha... but yeah ... I like to rely upon trend quite a bit. Trend awareness is equally fair as a word choice, and is actually a wise factor in any deterministic aspect of weather forecast - range and domain notwithstanding. Particularly, when a given trend can be rooted ...or at in the least suspected as being, causally linked to x-y-z ..etc. In this case? I think there are reasons - valid - to assess the trend of recent winters may repeat? And I mean to put the "?" on that.

You can actually see that in the 'art' of weather graphics when peering over the 500 mb v- ...The positive vorticities swaths begin to curve or bow such that the southern ends lag back SW... That's absorption happening. Here's an example of the resulting positive sloping... random interval off the 12z GFS to illustrate the point:

No arg from me... I said just yesterday or the day before whenever that was that this might be a good year for NJ Model lows ... Miller B's fits in with those. We just gotta make sure the ambient flow doesn't end up with too may hypsometric lines ... because that is synonymous with huge wind as a base-state. That's bad for S/W's because their local wind maxes get absorbed -

can you run that regression for prior to, then post ... 1990... say .... or 2000, separately ? granted the sample set size is not inspiring much confidence in the latter interval - I still want to see the result. you've got all instances in there ...judging by the shear number in the scatter plot ( eye-ballin' ) that's like all ENSO deviation demarcation events going back ... I dunno but a long ways? I don't think the ENSO states are "as effectual" in modulating the winter patterns since 2000 as they were prior to that for a bevy of reasons that I've opined ad nauseam and don't wanna get into at the moment... But, it may also be that there's just not enough scatter plot ballast since 1990/2000 in to be of much use either - hands cuffed by prediction vs having to wait on verification in that sense I suspect the warm ENSO events have more memory than the other way around, particularly prior to 2000. But, because the other way around is more likely the base state in having "normal" unimpeded trade wind sea-surface stressing, that tends to keep the NINO 3.4, 1 and 2 regions less than EL NINO ... The base canvas would thus 'erase' the modest NINA events by virtue of merely absorbing its signature into the ongoing circulation of the hemisphere in those scenarios... NINOs however, might be more observably lingering ... just a hunch but also a digression -

Yeah in his defense... some sort of training warm frontal wedge convection appears to be going on in his vicinity https://www.cnn.com/2020/10/13/world/un-natural-disasters-climate-intl-hnk/index.html

it's too much - sure... Glad you picked up on the sarcasm - tough to deliver that ... I do think the world is warming and I do fear thresholds and so forth but come on - look how the models took the planet of Venus and crash-landed it into the Pacific Basin ...it's like minus 10 SD La Nina which is outside the theoretical bounds of Terrain physics or something ahahaha

...Since you asked me and care so very deeply how my opinion affects you and all ... I think this could be an N-stream dominated winter, but one that wends its way to (climate signal + average cold)/2 = ... take a f'in guess how that parlays snow... it's like a N-stream dominate winter superimposed over a planetary hockey-stick (denying ...) climate modality that doesn't end well for winter enthusiasts ... oh, not for decades. Okay, as we know in climate science, it doesn't move on a predictable slope though. I'm starting to wonder if might cross over a threshold ... years before Will's take on things that a 'no winter scenario' here won't set into until beyond the visible universe of our life spans -- how? because we arrogantly ( as human tendency ) keep expecting a slower deal merely because our egos get in the way of the fact that just because we can't imagine horror unfolding tomorrow, that means it can't happen. But, threshold happen by breaking at stress points... and boom! as they say in Ebonics, 'we be f'ed' Not to be alarming or nothin' but Mad Max's setting was the year 2021 muah hahahaha. The U.N. isn't holding back today ... 'the earth will become an uninhabitable hell to millions' .. Somewhere between those two futures lurks the inevitability smearing of our Currier&Ives portrait of winters - ...maybe

The obvious ? that's a global warming depiction there ...when every single guidance source has an unbalanced warm/cool ratio ... that's a warming world - sorry.

My lawn actually greened up about three or four weeks ago when that last convection ( prior to this recent macroburst event ) came through... We were actually straw lawn beige ...then, we got an inch.5 in a two thunderstorms on the same day... and within 3 days there were new green blades coming up and since... it's green. It's never been really very reflective of a significant deficit here in the Nashoba Valley, but.. in fairness, I have had a convective season here. I was under something like 8 t-storm warnings and 2 tor-warnings ... No tors verified but we had big wind and lightning cut up rains on at least half those t-storm warnings. Granted, convection tends to bonanza locales while boning regions... agreed, so this area was probably lucky in that regard. The small stream just down the road that is very seasonal rain readily responsive was actually dry enough to walk without wetting foot other years when the region was only yellow in patches by the Monitoring folks. This year, it's still managed small amounts throughout -

it appears to be keying on general pan-wide systemic/numerical instabilities that exists through those lower latitudes of the SW Atlantic Basin - I was discussing similarly ..it's seems to be a recurrent Autumnal right of passage. But in those specifics, the timing is way off between it and the GFS, the latter which doesn't even have its entity focused until 300+ hours; contrasting, the CMC is days ahead with an inverted trough over the whole breadth of the expanse and some paltry commitment to a TC ... The take-away is a period of development potential over all of the western Caribbean, Gulf and adjacent to Florida as the primary concern for now.

That's kinda spooky/hilarious - we were just musing sort of sarcastically .. then the 06z Parallel GFS solution pops out - heh

November 2019'S NAO averaged negative by a click and a half SD ... and then in the first week of Dec, as the index began modulating positive toward a December destined to a modest +.25 to .5 SD, ...it was right in there most of us acquired pretty much 70 or 80 % of our yearly snow ballast. We seemed to double that in morning frosts through late March from that point forward. The rub on that was that said event was not 121" of snow - lol But, the early and deep polar index ( NAO ) last year was off-set by the AO by a whole month. Interestingly...according to CPC ( https://www.cpc.ncep.noaa.gov/products/precip/CWlink/daily_ao_index/monthly.ao.index.b50.current.ascii.table ) the AO carved out a deep January, when the NAO was positive. That's interesting... Because those two domains share/over-lap a consider amount of their geographical area, so having the AO manage a -1.5 SD while NAO was positive in change, ... that's really stressing the odds there... The CDC's correlation table has the AO and NAO positively correlated by some .7 ...which for atmospheric phenomenon is quite indicative. Yet, they found a mid winter butt bang status like (-1.5 SD AO)( +.5 NAO) ? Just sort of cynically ... I'm inclined to think our misgivings about 2019-2020's winter as an entertainment gestalt might be related to that rareness... EDIT this is wrong - I miss aligned the columns - sorry ugh. They were better matched afterall ... = December 2019 was doomed after that first week, but the month salvaged by virtue of actually having the first week's snow/storminess take place. So what I am getting at is an aside point along the way of this discussion; since the year 2000 ( as a notably observable trend) with either snow, or...patterns conducive to snow ( that latter may actually open up the totals to a bigger number but is subjectively debatable popsicle headaches stuff ) has been been recurrent themes in autumns. I see it unfolding in the GEFs/ tele's ...and the operational GFS ... yet again. The last cycle of GFS has 516 DM thickness across the NP on October 18!!! That's just not normal...sorry... But, it may not happen? But the fact that the model keeps doing it...and, we have in fact almost all but grown accustomed to if not expecting our snow in October ( ludicrous by any imaginative standard prior to the year 2000) ...I think it's all connected. And it matters... because... the NAO blocking of November last year went on to NOT do shit for winter... It was not correlated to winter at all at least in that one shimmering example. Yet, the AO...which was positive in October and Nov aggregates, went demonstratively opposite. It's not just noisy...it's a damn din and polar indexes in autumn were excessively negatively correlated in the one example last year. My most recent thought on this winter is a n-streamer ...

Purely anecdotal ( ...though my convictions are "observationally" rooted - lol ..) but I don't see a useful correlation to the actual weather patterns is the thing... Now ... obviously 'blocking' is a distinction of patternization ... But, when time is introduced, nah. Not by frequency for either restoration and/or modulation tendencies when comparing Octobers to their ensuing DJF of any given year. It's noise in other words... 30 days of noise in October "might" contain orientations that equal or bear some resemblance to fractals embedded in the noise of 90s days. What happens to November in that - I mean... it's like ( to me ) arbitrary when we start doing that... may as well compare April 13th's 6 years later to October 12th's ... aha! Pointing out a rather obvious circumstantial concept: 30 days is long enough that a blip for a week, or even two weeks of October blocking(no blocking) may occur; but then 90 days is an even longer...thus, much more likely chance that either of those circumstances may be ephemerally observed - think about it this way ... a progressive pattern tendency may go through a 'relaxation' - well, that relaxation by virtue of needing to go the other way to actually achieve relaxation may mean 5 days of transient -EPO(-AO)-NAO in there...or even two week's worth of it...before the the next 40 days of progressive winter ruining piece of shitness sets in... What? do we say that was a correlation because say, there was a typhoon over the western Pacific back on October 10 early that autumn that happened to recurve ...building a height response over the Aleutian Basin --> brief NW flow downstream over western Canada ? It's too much of a stretch to suggest those disparate moving parts have any kind of direct or even indirect causal connection ... So in simple terms ... yeah - "weak" puts it maybe even too strongly if you ask me. I think this is a simple matter of 'conditioning' ... Circumstantially, if there is a 100+ winter snow year, the antecedent autumn sticks out in memory ... because as part of the human condition, we seek and create patterns to describe everything we see in nature. It's why we discovered ( or invented - jury's still out on that..) mathematical rules, and language to convey the mechanics. Add artistic expression to that... it's all creating patterns from the nebularity of reality... blah blah ...that's an infinitely deep well of philosophy ... But, on point, a big snow year happens rare enough, that the Octobers that preceded it offer an easy guess-vector. But unfortunately, the age -old statistical argument of that not being a substantial enough data density to offer a high confidence ... screams at us. Top 20 years of snow and cold and ... winter cinema in general... is 20 Octobers - wooooh! 20 Octobers out that last 300 million years since the break up of Pangea sent Europe and Africa sailing away to the east and created the distinction of eastern N/A... It doesn't automatically preclude the possible correlation useful, ... that is true. But the convention of using statistics, which "correlating" is ... And that requires that the entire course of discussion does not require anyone reading as much as I have typed over it just now... haha. But, they say there is a modest 'negative' ... okay - maybe that is just because there are only a handful of years where the signal was just planetary scale, thus large and immovable and lapsed longer than typical pattern gestation...into the ensuing DJF. .. I would almost suggest that aggregating Oct and Nov might have more statistical correlative just based on these weighting concepts -