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Inverted Trough/ Redeveloper Disco Jan 7-9 - Part II


Baroclinic Zone

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It's out, pretty big cutback. I think BOX has the right idea.

1-3 canal region building to 2-4 mid cape, perhaps 3-6 out by Phil. Final call later, I think it makes a sharp move towards death or back towards good snows in SE. Don't see it sticking with this solution...going to be all or nothing.

18zgfsensemblep72072.gif

The western edge of this could be a lot of light snows too. 850-500 RH/VV shows this potential to the CT valley.

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The ensembles are a decent distance east of the BM, but I don't know if they are useful at this point.

Scott I never follow them in this close but what's the thought process behind that? They're run on a coarse grid right? Do you find they lose usefulness inside of a certain period?

I want to get excited about Saturday night but I just can't yet. Such a fine interaction I'm not confident anything happens but am very hopeful. Feast or famine situation.

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It's out, pretty big cutback. I think BOX has the right idea.

1-3 canal region building to 2-4 mid cape, perhaps 3-6 out by Phil. Final call later, I think it makes a sharp move towards death or back towards good snows in SE. Don't see it sticking with this solution...going to be all or nothing.

18zgfsensemblep72072.gif

BOX has 1-3 back to HFD dude

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Scott I never follow them in this close but what's the thought process behind that? They're run on a coarse grid right? Do you find they lose usefulness inside of a certain period?

I want to get excited about Saturday night but I just can't yet. Such a fine interaction I'm not confident anything happens but am very hopeful. Feast or famine situation.

Well I think under 48hrs is becoming OP time, but that's just me. Maybe in some situations they are useful.

Set your expectations low for Saturday Night. If you get 6"...awesome, but this setup could disappoint too.

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Just throwing this out, think they're doing a very good job at BOX, this is all you can do at this point. Just like today if it comes together someone could easily get 10", if it shifts a little more bleck

"OUR PRELIMINARY THINKING IS FOR 3-6" FOR SE MA AND CAPE/ISLANDS E OF

PYM-EWB LINE WITH LESSER AMOUNTS TO THE NW. HOWEVER...THIS IS TRACK

DEPENDENT AND ANY DEVIATION IN THE LOW TRACK WILL AFFECT THE SNOW

ACCUM. WE HAVE MEDIUM TO HIGH CONFIDENCE AN ADVISORY WILL

EVENTUALLY BE NEEDED FOR THE CAPE/ISLANDS AND POSSIBLY PORTIONS OF

SE MA AND RI. LOW PROB FOR WARNING LEVEL SNOW OVER THE CAPE/ISLANDS.

BECOMING WINDY ALONG THE COAST SAT NIGHT WITH SOME BLOWING AND

DRIFTING POSSIBLE.-- End Changed Discussion --

"

My thoughts exactly.

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Scott, what do you think it will be like for the Outer Cape of Cape Cod, MA, like from Harwich, MA to Orleans or thereabouts? Will this be like a dangerous comma head where the precip rotates in from the SE to NW into the region with a great sizable band, or will this just be a light to moderate snow event with nothing greater than 1"/hr snowfall rates?

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Yes, complete whiteout here, closing in on 6", may end up near 8"???

Yeah, it's freakin' SN++, your elevation FTW but still mighty impressive here. I'll measure when it's done which hopefully could take until 7. We're not even in the heaviest yet. It's also getting up to east of Danbury. Can someone up there take a run at 12? I don't see why not if they already have 8-9.

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Scott, what do you think it will be like for the Outer Cape of Cape Cod, MA, like from Harwich, MA to Orleans or thereabouts? Will this be like a dangerous comma head where the precip rotates in from the SE to NW into the region with a great sizable band, or will this just be a light to moderate snow event with nothing greater than 1"/hr snowfall rates?

I don't know. It's very early to determine that. It's possible there could be a strong band in that, but it's way too early to figure that out...especially with models ticking east.

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Thanks Scott, just asking, it would have been really awesome to see the H5 low actually strengthening instead of status quo or weakening a tad as it moved to my south and southeast. I think this is the one problem we have with this system from getting a full blown blizzard. It is unfortunate that I won't be getting a blizzard before I go to Hot San Antonio, TX lands.

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Well I think under 48hrs is becoming OP time, but that's just me. Maybe in some situations they are useful.

Set your expectations low for Saturday Night. If you get 6"...awesome, but this setup could disappoint too.

I'm expecting about 1" here as of right now, more if I can get those pseudo OES bands going. I have zero faith in all models at this point. I want to see the 0z but if the GFS map is close to right blah. I get the feeling this is going to be like being in Hartford today. Snowing hard 40-50 miles away.

Thing is there's still some small apparent errors as the 18z rolls towards 6h but it's hard to believe a 30 mile difference in placement of energy or a few units of strength is going to make a big difference at this point.

What is odd is the handling at 500mb beyond 18 hours. It looks a little bit like feedback but that's kind of hard to swallow with most every model doing it. IE, it shouldn't be so far east. It's interesting to me that the NAM and RGEM handle it differently at 24 hours. They're both tucking it into NJ verus escaping offshore. Still a critical difference. Comical that even with the 500mb presentation very similar the RGEM and NAM have substantially different surface evolutions.

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