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Atlantic Tropical Action 2012 - Part II


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Between TD 7 and the failed African wave 93L, I hope the rest of the season isn't a disaster. Pattern over North America is also extremely unfavorable for conus landfalls (A good thing, obviously). The issue is that this could be the 7th year without a major hurricane landfall, a remarkable statistic.

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I almost wonder if that wave is splitting.

Hmm, very interesting development. You can see the wave has clearly split here (caution, takes a while to load)

All the models appear to only indicate a region of strong 850 mb vorticity associated with the northern wave near the CV islands. While it appears to me that the southern one is almost as robust, none of the models really have it.

Could the southern wave survive and take a much lower latitude track across the Atlantic? Probably not, but at least it's something to watch. ;)

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Between TD 7 and the failed African wave 93L, I hope the rest of the season isn't a disaster. Pattern over North America is also extremely unfavorable for conus landfalls (A good thing, obviously). The issue is that this could be the 7th year without a major hurricane landfall, a remarkable statistic.

Thanks, rainstorm

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Hmm, very interesting development. You can see the wave has clearly split here (caution, takes a while to load)

All the models appear to only indicate a region of strong 850 mb vorticity associated with the northern wave near the CV islands. While it appears to me that the southern one is almost as robust, none of the models really have it.

Could the southern wave survive and take a much lower latitude track across the Atlantic? Probably not, but at least it's something to watch. ;)

I think there have been at least a couple AEWs that split and each generated a TC? Or I could be hallucinating. I think it's been a while since it has happened.

If anyone remembers let me know.

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im not seeing anything on the GFS except a pretty bad overall pattern.

I'll hold my enthusiam over anything still over Africa after the apparent can't miss forecasts for 93L at a similar point inland Africa. I suppose limited data points may have had something to do with that.

Nothing obvious on globals, but it is about a month to the normal season peak, so no panic.

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Between TD 7 and the failed African wave 93L, I hope the rest of the season isn't a disaster. Pattern over North America is also extremely unfavorable for conus landfalls (A good thing, obviously). The issue is that this could be the 7th year without a major hurricane landfall, a remarkable statistic.

Still way early for this but i agree its a remarkable statistic. Maybe we'll go another 4-5 years lol.

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csstgom.gif

Everything out of the caribbean is headed east through the Florida straights. No loop current was a bit of an exaggeration.

Suppressed loop current is more accurate.

And to clarify the loop current is what I call the thing that comes up from the Caribbean. The gyre in the middle of the gulf is an eddy.

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Everything out of the caribbean is headed east through the Florida straights. No loop current was a bit of an exaggeration.

Suppressed loop current is more accurate.

And to clarify the loop current is what I call the thing that comes up from the Caribbean. The gyre in the middle of the gulf is an eddy.

The loop current spins off an eddy approx every 11 months, which usually heads to the W to SW. The eddy in front of the coast of Tamaulipas was part of the loop current around Nov 2011, the bigger eddy just excised a few weeks ago...well ahead of the average.

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BTW, we are about to enter a couple of weeks of enhanced activity ...not just there's a strong CCKW propagating trough the basin, but there's also a good amplitude MJO wave on it's heels. Good writeup by Mike Ventrice, which include a few instructional graphics.

ALL_emean_phase_full.gif

True, but the zonally-elongated ridge that provided us with a great pattern for easterly waves to cross the Atlantic is in the process of breaking down. Which means the easterly waves that do develop are very likely to be fish food. Probably not much chance of anything local unless we can get some Caribbean genesis events.

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True, but the zonally-elongated ridge that provided us with a great pattern for easterly waves to cross the Atlantic is in the process of breaking down. Which means the easterly waves that do develop are very likely to be fish food. Probably not much chance of anything local unless we can get some Caribbean genesis events.

Do you think it will break soon? It doesn't look like next 10 days, but you are probably talking beyond that...what are you looking at? NAO in the short/medium term should favor zonal ridging across the Atlantic.

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Do you think it will break soon? It doesn't look like next 10 days, but you are probably talking beyond that...what are you looking at? NAO in the short/medium term should favor zonal ridging across the Atlantic.

Perhaps "break down" was a little strong. But clearly the ridge is weaker now than it was before with some "gaps" of lower height that could easily allow a cyclone to recurve. You can see this weakness in the 500 heights around 55W right now, closer to 65W a few days from now, followed by just generally low heights for an Atlantic ridge stretching all the way from 50W to 70W by the end of the week. So you're right, the ridge it still there, but it's not what it was before.

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:whistle:

Interesting indeed. Would the potential system be feeling the East Coast flattish ridge and want to recurve. Or could it make it further West, and not start coming up until close enough to hit Florida, while avoiding more mountainous terrain of Greater Antilles? Nobody wants damage and incomnvenience for anybody that a TC would bring, but since they do happen, Florida has the best building codes, flat terrain, and a good road network, for chasers who would upload U-Tube videos.

Who knows. 10 days out, can't be certain of anything. But it isn't automatic fish, anyway, if semi-accurate. Between this and GFS regenerating ex-TD 7 off Tamaulipas for possible Mexico chaser excitement, Glass exactly one half full optimistic on more quality video opportunities next 8 to 16 days. Op GFS at 10 days has a deeper trough that does scream fish for anything that might develop out MDR way, but I am an optimist

542328_394213527301119_1911703864_n.jpg

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I'm sailing to Bermuda from NYC next Sunday and return the next weekend. Should I be a bit nervous given that forecast?

You should be fine. Thus far, we have no evidence to suggest the 12Z Euro wasn't an aberration. Other runs from earlier Euro/GFS suggest a weaker system. That said, you should monitor model trends in the coming days.

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