Jump to content
  • Member Statistics

    17,585
    Total Members
    7,904
    Most Online
    LopezElliana
    Newest Member
    LopezElliana
    Joined

A new Baby, a fresh approach


Ginx snewx

Recommended Posts

  • Replies 2.1k
  • Created
  • Last Reply

Whiff on storm 2 at h168. Pretty flat trough though...plenty of time.

I'm a little confused... Not that the details matter, but at 144 hours we have a weak (2nd) low in good position for much of SNE with (the first) bombing low near 50/50. At 168 we have what appears to be the same (2nd) low (?) drifting slowly SE, basically blocked. Doesn't really show the inverted trough look either. But not sure that qualifies as a whiff if we all get decent snow beforehand.

Then almost a Miller A brewing by day 7.

-edit meh, nevermind it's irrelevent. Pattern looks solid

Link to comment
Share on other sites

I'm a little confused... Not that the details matter, but at 144 hours we have a weak (2nd) low in good position for much of SNE with (the first) bombing low near 50/50. At 168 we have what appears to be the same (2nd) low (?) drifting slowly SE, basically blocked. Doesn't really show the inverted trough look either. But not sure that qualifies as a whiff if we all get decent snow beforehand.

Then almost a Miller A brewing by day 7.

-edit meh, nevermind it's irrelevent. Pattern looks solid

There is a pretty big difference from 0z to 12z out west that's having an effect, But this far out we have the players on the map and good enough for me right now

Link to comment
Share on other sites

Is anyone else having trouble with the wunderground ECMWF maps?

Yes, I am as well. Their accumulated precipitation plots are messed up for some reason. Instead of showing 6-hour accumulated precip, they're showing the total precip from the period from hour 00 to the ending hour. Either they inadvertently broke something in their code, or perhaps more likely, ECMWF may have changed how the QPF data is formatted in the grids so their scripts need to be tweaked. I may try to find a way to contact them, as I very much appreciate the free ECMWF QPF data. The GFS plots look fine.

While I like the upcoming pattern in terms of overall potential, I'm not ready to get too excited yet. A lot can go wrong...too little cold air, low moves too far offshore, etc. As Will said in an earlier post, the key is getting an active pattern in place first.

The first event looks like it could deliver for elevated, interior sections of SNE and NNE. As for interior MA and N CT, it will be a question of how strong the primary and secondary lows are. A stronger primary could find a way to screw our area as warm air gets ushered in aloft and delivers a sleet fest (assuming the low levels are cold enough) as the secondary tries to get going. Obviously, a faster coastal redevelopment keeps cold air tucked in better and would increase our chances of getting a good snow. Being on the west side of the Berks, I've been effed by these sneaky warm tongues that come in from dying primaries before where I get sleet and the east side gets snow. This is especially true when midlevel temperatures are very marginal and near 0° C.

I rarely buy into these GFS Norlun scenarios, especially in this range. If it was 48-72 hours out, then maybe. Meteorologically, a lot of things have to come together just right in order to get an inverted trough that produces significant snowfall in SNE. Norluns are bit more common in NH and ME, but even there they're not exactly "common" per se.

Link to comment
Share on other sites

That second strom is actually an entire different system added in between the 2 events 00z had...if you follow the shortwave maps you can see that 00z had it too around day 7, but it was more attached to the first system on the surface pressure maps....the third threat on this run by the way trended from chicago to wide right in 1 run....fun times ahead folks lol

Link to comment
Share on other sites

Canada is doing fine...but they almost always are by this point. Even in most lousy years...though I recall Dec 2001 was brutal north of us for snwo cover

2012345.png

No complaints about that snowpack

i can't wait for his careful analysis free from emotional contamination

:lol:

I wouldn't mind having this storm speed up a little to a Sunday - Sunday N event ... I'm flying into Logan Monday afternoon.

Jealous. I drive in Wednesday

Link to comment
Share on other sites

Whoa, Euro with a much different look. The cutter runs into a brick wall at the line and shreds east (unfortunately, much of the dynamical forcing withers, as well)... however, the resultant trough just keeps on producing... exact details are unknown, of course, and the cold looks a little marginal for my liking (especially down here), but the pattern looks to be shaping up nicely.

Link to comment
Share on other sites

Keep an eye on that high pressure for the first event...if it gets as far south as the Euro shows, the boundary layer will cool very well. That is a pretty decent airmass up there, but its just a question of whether we can advect it far enough southward. Verbatim this run it was pretty impressive well into SNE.

Link to comment
Share on other sites

Whoa, Euro with a much different look. The cutter runs into a brick wall at the line and shreds east (unfortunately, much of the dynamical forcing withers, as well)... however, the resultant trough just keeps on producing... exact details are unknown, of course, and the cold looks a little marginal for my liking (especially down here), but the pattern looks to be shaping up nicely.

Agreed. I like the look on the mid range models a lot.

If we take a look at the 168-200 timeframe, the Euro has major changes at the surface. It goes from cutting a storm over chicago, to developing it over FL and then brings it just OTS. THe key difference here is the progression of the storms ahead of the potential big one. The euro slows down the storm at 150 significantly from its 0z run, possibly due to blocking/ 50/50, which in turn forces the energy for the next storm further south instead of cutting.

Obviously its a ways out, but lots of things to watch for going forward.

Link to comment
Share on other sites

Look back at the major blocking periods from 2009-2011. Every time we had a huge block over the DS, northern Maine ends up backing, but SNE and the mid atlantic cash in on big time cold. It all really depends on the location and strength of the block though.

it's not quite that good though...the pacific isn't cooperating this time...and blocking in 2009-2010 was much more extreme.

We've heard a lot of gradient pattern talk the last two weeks..but what is shown isn't a gradient pattern.

Link to comment
Share on other sites

it's not quite that good though...the pacific isn't cooperating this time...and blocking in 2009-2010 was much more extreme.

We've heard a lot of gradient pattern talk the last two weeks..but what is shown isn't a gradient pattern.

Im not saying it was as strong as the 09-11 phase, but it certainly is a presence. I think the real battle were going to witness will be between the NAO and the +EPO/-PNA. It seems like we have two conflicting signals atm

Link to comment
Share on other sites

the "anti-gradient" pattern.

Yeah its funny how it morphed into that...thanks one to the obscene retrograding of the NAO block which we were skeptical of at first. Then secondly the retrograding of the vortex north of AK which at least temporarily prevents arctic air from pushing south.

But given the climo of mid December and the position of the high pressure in Quebec...it will probably still be a snow gradient pattern. Also, for that first event, it actually is pretty cold even compared to climo up in S Quebec.

Link to comment
Share on other sites

the "anti-gradient" pattern.12zECMWF6-10day500mbHeightAnomalyNA.gif

12zECMWF6-10day850mbTempAnomalyNA.gif

Lol yeah talk about a fail...the east pacific ridge retrogrades, the polar vortex escapes to siberia with the coldest air, and the NAO west forms within the next 5 days... One fact that doesnt change in all this is that New England continues to be favored for any frozen precip threats

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

Guest
This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.

×
×
  • Create New...