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Feb Long Range Discussion (Day 3 and beyond) - MERGED


WinterWxLuvr
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Weenie AF in just the mid-range.

Chill...I suggest you log out at about 4 pm tomorrow, then come back when it seems like something could be on the table, whether that’s this coming weekend or after.

I’m looking out for your own best interests. :lol:

20 minutes ago, Bob Chill said:

Seems counter intuitive but with an AO prog'd to go that negative, if the NAO keeps diving amwx will need a new weenie subforum for the FL panhandle. 

Blocking itself doesnt produce storms obviously but every nosedive and relaxation provides a window for a sig storm. Interesting to see just how cold guidance is hinting at now. TPV being very displaced in Feb is productive in our region. You dont have to go far back in history to confirm this idea.

Just for giggles as I've literally have only briefly scanned lr guidance off and on all winter so far, and I'm not in tune like the heavy lifters... but... I do see potential for a general idea something like this:

Not much of a chance for a big clean storm storm during the period leading into and shortly after the arctic front but some sort of west track cad, modest trailing wave/anafront, or clipper style event would be the most probable way to score something quickly. 

Unless it backs way off in depth, cold shots like this can really dry things out all over the eastern half of the conus so there could be boring period before the next big chance window opens. Snow could come easy regardless of track too. Need the NS to keep dropping shortwaves relatively close together to maximize the chances and avoid ZR to rain after an extended cold period. No idea whatsoever how active the NS will be but persistance argues against any extended lull in precip/storm chances. 

IMO- we're only getting started today. I'm expecting a compressed active winter period along the east coast in general thru the majority of Feb. Nothing specific on guidance telling me this. Just my personal experience. This doesnt translate into multiple stacked up events here. It could but not something worth discussing today. This is the first time I'm interested in the LR all season. But I'm busy AF so I'll let you guys sweat the details until something sets the hook in the mid/short range

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1 minute ago, HighStakes said:

Why don't we all agree on MECS followed by bitter cold and then another MECS then call it a winter.  Only a matter of time before we hear some 1899 comparisons by JB and the usual suspects. Lol. 

Love to get a cold storm followed by an Arctic air mass and have snow otg for a week. That doesn't happen too often anymore.

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1 minute ago, CAPE said:

Love to get a cold storm followed by an Arctic air mass and have snow otg for a week. That doesn't happen too often anymore.

Yeah, I know.  Even up here it's tough. My front yard faces due south. I lose a lot of snowcover on sunny days even when its decently cold. A stretch of deep winter would be welcomed. It us on the table now. 

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1 minute ago, CAPE said:

Love to get a cold storm followed by an Arctic air mass and have snow otg for a week. That doesn't happen too often anymore.

This storm was well predicted by using this tool 

https://fh004579.webs.act.reading.ac.uk/gfs_hf/vstar_tstar_100.html

Ventrice even alluded to it in a recent post. 

Also the evolution up top supports the development of a extreme MECS. The baroclinic zone supports intense low pressure residing at a lower latitude. Deep Eastern NA trough  

I feel this storm system will be more powerful colder and wetter than tis event today and tomorrow 

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33 minutes ago, nj2va said:

Will PSU worry about suppression though? ;)

I know it’s half joking but last time I’m gonna say this.  It snowed today almost to the NC/VA border. We got plenty of suppression.  In the end the western ridge axis was just a little too Far East (and we kinda knew that but sometimes you can overcome it)  and so the major amplification of the trough happens SLIGHTLY too late for us. Suppression wouldn’t have helped at all. It would have hurt the WAA snow today and probably made the coastal develop further east and miss everyone. We simply needed the trough axis to go negative a little sooner or further west.  

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2 minutes ago, psuhoffman said:

Good news is the pattern next week looks even better wrt that issue. The next trough amplification looks to happen just to our west which is where we want if we have this kind of blocking 

Bingo.

Give me a slightly further west ridge axis and I’ll take my chances with the block making up for it. Let’s f’ing kill it.

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