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Atlantic Tropical Action 2012 - Part II


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Recall that the "strength" depicted on models is more of a function of size than true intensity. This will probably end up being a large lumbering Cat 3 or something like that.

Yeah, but even extrapolated to account for size, the Euro's depiction is likely a Cat 4 at the very least...

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So apparently....

EIGHT TROPICAL STORMS FORMED IN THE ATLANTIC BASIN DURING THE MONTH

OF AUGUST. THIS TIES THE ALL-TIME RECORD FOR THE NUMBER OF NAMED

STORMS FORMING IN THE MONTH OF AUGUST...WHICH WAS SET IN 2004. FOUR

OF THE TROPICAL STORMS BECAME HURRICANES DURING THE MONTH. THESE

TOTALS WERE WELL ABOVE THE LONG-TERM AVERAGE (1981 TO 2010) OF

THREE NAMED STORMS...WITH ONE OR TWO HURRICANES. NO MAJOR

HURRICANES OCCURRED THIS AUGUST...WHILE A MAJOR HURRICANE TYPICALLY

OCCURS IN AUGUST ABOUT ONCE EVERY TWO YEARS.

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August was pretty darn active for an Nino year.

With TD 13 lined up to become Michael, we could get deep into the list by the end of September.

I could go for a Hurricane Tony...

Michael

Nadine

Oscar

Patty

Rafael

Sandy

Tony

Valerie

William

Considering we already have tornadotony...

Also, Oscar and Rafael sound pretty hardcore.

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So much for the El Nino suppressing activity...

Funny that the other year that shares the record -- 2004 -- was also an El Nino year. :lol:

Well the GWO continues to remain in the low AAM phases as it did in 2004 maintaining an nina-esque atmosphere. So the weak nino .8C SSTA's haven't translated or been reflected in the atmosphere or atmospheric circulations yet.

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Well, it apparently suppressed quality.

Re: names... I want Nadine to be the 130-kt landfall that I chase. Thx.

I see a 100 to 110 knot storm hitting Long Island on the 74th anniversary of 1938. Half the SNE and NYC subforums will be post limited by landfall, including at least one red tagger, :weenie:

However, it will be well into post-tropical transition, and will resemble some more intense Winter Nor-Easters that develop an eye like feature, and look spectacular on visible satellite imagery, but that have almost all the convection and cold clouds tops North and East of the center.

post-138-0-49359600-1346718586_thumb.gif

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August was pretty darn active for an Nino year.

With TD 13 lined up to become Michael, we could get deep into the list by the end of September.

I could go for a Hurricane Tony...

Michael

Nadine

Oscar

Patty

Rafael

Sandy

Tony

Valerie

William

+1

I can only dream...but I ain't gettin' my hopes up.

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Post Hour 192, the different GFS runs become somewhat divergent, but a long track Hurricane Nadine for Long Island on or about the 74th anniversary of 1938, I have to remain glass 5/256th full optimistic.

The 6Z run today is a near miss fish, but lots can change in two weeks.

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Things could get a little tight next week.

GFS is a big fan of the MJO coming back to the basin soon.

ECMWF has changed its mind and now suggests counterclockwise rotation into RMM phases 4-6. This would go in line with the statistical model forecast that you sent a picture to yesterday. The bulk of the last MJO convective active phase is located over Maritime Continent. However, there appears to be many westward propagating disturbances causing interference with the MJO signal, causing the MJO signal to be weak (especially at the upper levels).

ECMWF forecast:

ECMF_phase_51m_small.gif

Just an osbervation but the GWO is nearly amplifying into RMM phase 4-5, which often phases with the phase of the MJO. However, the uncertanity with the MJO forecasts lately are very high.

http://www.esrl.noaa...gcm/gwo_fnl.gif

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Since Steve's Texas thread in the Plains/Western subforum still is subtitled "eyes on the tropics"

1) GFS gets a low, sort of, kind of (and JB is tweeting) from the remnants of Isaac, almost, not quite, to 90ºW before the super-mega Autumn cold front blasting through Texas kicks it East

gfs_mslp_uv900gulf_tropical_27.png

2) Weatherbell Free Model site and Raleigh, and even PSU e-Wall suggesting the Yurpians not playing well today. But free ECMWF.int site day 9 and 10 shows a not bad looking tropical wave in the Western Gulf.

Glass 3/64th's optimistic. The window is rapidly closing on Texas season, but it isn't closed yet. Which reminds me, I have to look for a reconstructed 500 mb map for October 1st and 2nd, 1949, when a TC was dragged from the Pacific into the BoC and hit Freeport. A once or twice a century kid of deal, but if I can stay Glass 1/256th full optimistic on Texas tropical season past the Equinox, that is part of my silver lining rose colored glasses nature that should have me in the running for 2012 Weenie of the Year.

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Since Steve's Texas thread in the Plains/Western subforum still is subtitled "eyes on the tropics"

1) GFS gets a low, sort of, kind of (and JB is tweeting) from the remnants of Isaac, almost, not quite, to 90ºW before the super-mega Autumn cold front blasting through Texas kicks it East

gfs_mslp_uv900gulf_tropical_27.png

2) Weatherbell Free Model site and Raleigh, and even PSU e-Wall suggesting the Yurpians not playing well today. But free ECMWF.int site day 9 and 10 shows a not bad looking tropical wave in the Western Gulf.

Glass 3/64th's optimistic. The window is rapidly closing on Texas season, but it isn't closed yet. Which reminds me, I have to look for a reconstructed 500 mb map for October 1st and 2nd, 1949, when a TC was dragged from the Pacific into the BoC and hit Freeport. A once or twice a century kid of deal, but if I can stay Glass 1/256th full optimistic on Texas tropical season past the Equinox, that is part of my silver lining rose colored glasses nature that should have me in the running for 2012 Weenie of the Year.

There is a fair amount of model support for some sort of a weak system getting going in the eastern Gulf ahead of that early Fall front. Appears as though it originates out of the system driving the large MCS over AL the last 24 hours. ECMWF gets it pretty far offshore and down to around 1005 mb before it moves NE into FL and eventually becomes a deepening ETC along the East Coast. Upper level conditions rest of the week around it look OK but not great. Will be interesting to see if anything comes of it, and if/when NHC starts discussing in the TWO.

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Pretty much all of the global models have a "multi-system slop setup" in the MDR in about 5-6 days.

Surprisingly enough, the ECMWF and UKMET are the most bullish as of 12z today.

I apologize for the different time frames, but something seems to be up with our global models today. They all illustrate pretty much the same thing.

ECM by 120 hours

GFS by 144 hours

NOGAPS by 144 hours

CMC by 144 hours

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NHC seems to want to get a jump on this one.

1. AN AREA OF LOW PRESSURE OVER CENTRAL ALABAMA IS EXPECTED TO MOVE

GENERALLY SOUTHWARD INTO THE NORTH-CENTRAL GULF OF MEXICO DURING

THE NEXT DAY OR SO. ENVIRONMENTAL CONDITIONS APPEAR MARGINALLY

CONDUCIVE FOR SLOW DEVELOPMENT OF THIS DISTURBANCE ONCE IT MOVES

OVER WATER. THIS SYSTEM HAS A LOW CHANCE...10 PERCENT...OF BECOMING

A TROPICAL CYCLONE DURING THE NEXT 48 HOURS

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NHC seems to want to get a jump on this one.

1. AN AREA OF LOW PRESSURE OVER CENTRAL ALABAMA IS EXPECTED TO MOVE

GENERALLY SOUTHWARD INTO THE NORTH-CENTRAL GULF OF MEXICO DURING

THE NEXT DAY OR SO. ENVIRONMENTAL CONDITIONS APPEAR MARGINALLY

CONDUCIVE FOR SLOW DEVELOPMENT OF THIS DISTURBANCE ONCE IT MOVES

OVER WATER. THIS SYSTEM HAS A LOW CHANCE...10 PERCENT...OF BECOMING

A TROPICAL CYCLONE DURING THE NEXT 48 HOURS

Floater already.

Would head in the direction of local excitement except super-mega Autumn trough pushing super-mega Autumn cold front will stop it in its tracks.

storm_90.gif

post-138-0-42041500-1346844957_thumb.gif

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Floater already.

Would head in the direction of local excitement except super-mega Autumn trough pushing super-mega Autumn cold front will stop it in its tracks.

storm_90.gif

what would have been the odds two weeks ago when Isaac was south of Hispaniola that it would eventually hit the same coastal location (LA/MS) coming from both the north and south directions?

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Pretty much all of the global models have a "multi-system slop setup" in the MDR in about 5-6 days.

Surprisingly enough, the ECMWF and UKMET are the most bullish as of 12z today.

I apologize for the different time frames, but something seems to be up with our global models today. They all illustrate pretty much the same thing.

ECM by 120 hours

GFS by 144 hours

NOGAPS by 144 hours

CMC by 144 hours

Something to be cautious about this wave (with respect to the GFS forecast), is that prior to exiting West Africa, the GFS has the strongest rain rates occuring between 06-12Z over the Guinea Highlands region tomorrow. This is a time of day where convection is often suppressed from diural forcing. So I'm not 100% sure if the GFS is accurately predicting the coherent diurnal cycle of convection there. That being said, there is a weak CCKW passing across the Atlantic during this time, and will superimpose with this wave in the next 3-5 days, increasing the chance of genesis.

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