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Fear and loathing April, 2020 discussion, obs, and the occasional derailment


Typhoon Tip
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Presently ...for those that hold out for a late surprised, your window 'appears' to be this week. The antecedent -NAO was remarkably well handled by the various ensemble means, but the details in the flow ( timing/spacing waves et al) have emerged to nuance this particular version of a -NAO ...utterly meaningless to your hopes and dreams. 

Which in a petty sort of way, the spring/seasonal change and warm enthusiasts suffer beside you in equal proportion, because any -NAO in the first week of April is not a warm signal either, particularly if/when it is idiosyncratically west-based...  

That said..., at least for the warm enthusiasts, the -NAO appears to (thankfully!) have a lease.  The Euro operational run has been signaling the NAO blocking node(s) as collapsing to mesh in with the perennial Atlantic heights, leaving a bit more zonal component to the westerlies at high latitudes across the D. Straight/adjacent N. Atl Basin as near as this week's end ... The GFS seems, as usual, to be fictionalizing the Hemisphere of Neptune on Earth by beady-eyed obsession to keep the flow progressive and therefore loses any signal at all in lieu of said bias beyond 5 days - so tougher read there.  But, as far as the Euro, it concomitantly raises the heights over eastern N/A mid latitudes/U.S.

It's not a hugely demonstrative ridge or anything, but it may become more prevalent given some marinading in time. The EPS made a pretty significant adjustment in the D7-10 range toward more a -PNAP signal...and with the NAO at that time appearing to either be neutral/rising, that could be the real, true seasonal exit and green up ... 'outdoorsy' push that flips the script.  We'll see, but that signal starts ~ 6 days from now and matures going onward from there. 

In the meantime, this week is tormented misery unfortunately. D4 may actually feature a pivot/-NAO spoke of wet snow and cold rain coming down like we used to see in the 1990's springs.  Kind of reminiscent there.  

Beyond that... April is very tough to establish and maintain warm signals.  Even in the warmer characterized patterns, we have such a huge dichotomy between land/continent and near-by Labrador modified death vapor. By physical circumstance and gravity, that latter is denser and wants to be underneath said warmth of the continent - which by irony and [probably] the design of satan himself no doubt, that's where humanity of course must be. It's like there is a permanent counter vector always pointing SW underneath the environmental synoptic appeals, at all times - think "white men can't jump" - oh they can, they just have to work harder to do it.  Same here... we can get warm in April, but we have to overcome this veritable vector ... arriving (typically) in the form of back-door fronts, and/or like this week, seemingly eternal west Atlantic cut-off gyres.  So, having a tentative warm signal heading toward the 10th of the month is almost a blessing already - certainly a start. 

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Just now, Damage In Tolland said:

The best part of Napril is that it is install month. Most of us typically put them up and in by mid to late month. To me, that’s a sign summer is right around the corner even if they’re not used much until Mayorch

Despite the world going to shit all around us, it makes me smile when Blizzy is still Blizzy.    Gives me hope

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