ATL: Ex-Hurricane DANIELLE - Discussion

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Re: Re:

#601 Postby KWT » Sun Aug 22, 2010 1:10 pm

Aric Dunn wrote:
thats not that far KWT ... stair stepping still will lead to a average WNW .. i bet late this evening its nearing the next forecast point..


Ok maybe not way but in this situation even small amounts north or east of the expected track really can make a difference...of course its still early enough in the game for the players upstream to be of far more importance...as I've said if this gets to 30N I can only see one solution being right given where the subtropical High sets itself-up at and the fact there are still upper troughs running to the north of the weak upper high that forms...sure It'd still bend west a little probably but nort hof say 35N it'd become very hard for this to bend back too far west or at any pace...

Thats why the HWRF's solution tonight is soooo interesting because it bends back quickly at 96hrs and far enough south so the subtropical high is totally in charge.

Also as for the whole shooting northwards thing, usually systems do tend to do that to some extent when they are down this low and the LLC tightens up, though I think the easterly shear has made it look far more dramatic then it usually is. As Aric said, watch for it to bend WNW soon, may even be happening already looking at the last loop.

Oh and Aric, FWIW I totally agree with you, but I do like to throw out some other ideas as well, I suppose I like the discussion of it all! :D
Last edited by KWT on Sun Aug 22, 2010 1:11 pm, edited 1 time in total.
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Re: ATL : Tropical Depression SIX - Discussion

#602 Postby Air Force Met » Sun Aug 22, 2010 1:10 pm

Lowpressure wrote: That may be true, but no one called for a north movement of the LLC this early. It is very interesting to watch and does beg questions, from any met watcher. You can not tell me the pros are looking at this and not asking what is going on, what will happen next.


True...we do look at it and wonder...but since this isn't our first rodeo...we aren't shocked. Weird things happen in the tropics. Its part of life. Weird things happen when I am trying to forecast for snow...or flooding. Sometimes things happen as they are forecast...and sometimes chaos gets you.

Honestly...I have to forecast for so many things...most things happen as they are supposed to...some things don't. This is one of those things that didn't. Chalk it up to chaos.
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Re: ATL : Tropical Depression SIX - Discussion

#603 Postby cycloneye » Sun Aug 22, 2010 1:12 pm

Is way north of the forecast point.

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Re: ATL : Tropical Depression SIX - Discussion

#604 Postby Ivanhater » Sun Aug 22, 2010 1:14 pm

I think it's best to step back for a little but. Give it a few hours and see if anything major has changed.
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Re: ATL : Tropical Depression SIX - Discussion

#605 Postby hurricaneCW » Sun Aug 22, 2010 1:14 pm

Well who knows, it might completely adjust and move due west tonight or once it loses the effects of the trough. It's definitely north of the forecast point as of now, however.
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#606 Postby ColinDelia » Sun Aug 22, 2010 1:16 pm

These unpredictable ebbs and flows are very typical.

Here's some snippets from Frances (2004) advisories in 6 hour intervals

5 AM EDT WED AUG 25 2004
IR IMAGERY INDICATES THAT THE TROPICAL DEPRESSION IS GRADUALLY
BECOMING BETTER ORGANIZED. DEEP CONVECTION HAS INCREASED A
LITTLE...PRIMARILY IN A CURVED BAND TO THE NORTH

11 AM EDT WED AUG 25 2004
TROPICAL DEPRESSION SIX IS LOOKING A LITTLE RAGGED THIS MORNING.
WHILE STILL ORGANIZED INTO BANDS...THE ASSOCIATED CONVECTION HAS
DECREASED SIGNIFICANTLY IN DEPTH AND COVERAGE SINCE SUNRISE. THE
REASON FOR THIS IS NOT CLEAR

5 PM EDT WED AUG 25 2004
AFTER LOOKING RAGGED THIS MORNING...THE CONVECTION ASSOCIATED WITH
TROPICAL DEPRESSION SIX HAS BECOME BETTER ORGANIZED THIS AFTERNOON

11 PM EDT WED AUG 25 2004
SATELLITE IMAGES THIS EVENING SHOW LITTLE CHANGE IN THE OVERALL
CLOUD PATTERN OF FRANCES. BANDING FEATURES HAVE NOT BECOME MORE
PRONOUNCED

I'm sure there have been many more extreme examples than this.

And there have been many thousands of advisories where a storm deviated in direction for 6 hours or so.
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#607 Postby HURAKAN » Sun Aug 22, 2010 1:16 pm

The easterlies were supposed to be weaker this year, meaning, less shear on system like TD #6. I guessed that hasn't happened yet.
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Re: ATL : Tropical Depression SIX - Discussion

#608 Postby Lowpressure » Sun Aug 22, 2010 1:19 pm

Air Force Met wrote:
Lowpressure wrote: That may be true, but no one called for a north movement of the LLC this early. It is very interesting to watch and does beg questions, from any met watcher. You can not tell me the pros are looking at this and not asking what is going on, what will happen next.


True...we do look at it and wonder...but since this isn't our first rodeo...we aren't shocked. Weird things happen in the tropics. Its part of life. Weird things happen when I am trying to forecast for snow...or flooding. Sometimes things happen as they are forecast...and sometimes chaos gets you.

Honestly...I have to forecast for so many things...most things happen as they are supposed to...some things don't. This is one of those things that didn't. Chalk it up to chaos.


I would think these things have happened more than we are aware of, but with better obs and technology, not much can happen any more without someone seeing it.
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Re: ATL : Tropical Depression SIX - Discussion

#609 Postby hurricaneCW » Sun Aug 22, 2010 1:23 pm

I'd kill to have this storm come up here and break the drought we're in. Even today's rains are completely bypassing my area. The moderate drought is only going to get worse without some decent rains and by decent, a good 2-3" rainstorm. It's never been so brown over here, the leaves and changing and falling like it's early October.

Anyway, the LLC has moved more towards the west, but it's uncertain what the future holds. How did the Euro compare to the latest Gfs in terms of strength and track?
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Re: ATL : Tropical Depression SIX - Discussion

#610 Postby Aric Dunn » Sun Aug 22, 2010 1:24 pm

cycloneye wrote:Is way north of the forecast point.

[img]http://i35.tinypic.com/20qyxr4.jpg


its only approx 76 miles from the initial position and 80 miles from next forecast point. that is not what you would call way off. The next forecast point is not supposed to be reached till 00z or about 5 hours..
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Re:

#611 Postby KWT » Sun Aug 22, 2010 1:24 pm

HURAKAN wrote:The easterlies were supposed to be weaker this year, meaning, less shear on system like TD #6. I guessed that hasn't happened yet.


What does the SAL look like to the north by the way Hurakan, maybe a slight uptick in the easterly jet again which is probably shearing the system...

Not the same type of shear as Colin or Bonnie though, well not to the same extreme, but its enough to probably prevent any strengthening.

The current GFDL looks decent in terms of intial motion and gets to 13.5N before it bends back WNW...which BTW I'm pretty confident that will happen...and I wouldn't even say the northerly motion wasn't forecasted, the models did suggest it would bounce a little to the north at first at times on thier output.

Also FWIW the GFDL still really develops this into a power house.
Last edited by KWT on Sun Aug 22, 2010 1:27 pm, edited 1 time in total.
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Re: ATL : Tropical Depression SIX - Discussion

#612 Postby floridasun78 » Sun Aug 22, 2010 1:26 pm

this starting look like less seas storm high now forecast to be stronger pull td-6 to wnw or w i see kwt still going fish for past few days but he missing that models are changing to more stronger high and more wnw track for next 5 days or longer kwt i think like word fish everyone need keep eye on td6 from leedwards islands to east coast from florida to north
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Re:

#613 Postby vacanechaser » Sun Aug 22, 2010 1:27 pm

HURAKAN wrote:The easterlies were supposed to be weaker this year, meaning, less shear on system like TD #6. I guessed that hasn't happened yet.



there is a system of storms just off to the northeast... all within the complex spinning around out there right that is causing the shear... look at the loop posted here and you will see the convection weakening now to the northeast... thats the cause... not the ridge being stronger...


http://www.ssd.noaa.gov/goes/east/tatl/flash-avn.html




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Re: ATL : Tropical Depression SIX - Discussion

#614 Postby Air Force Met » Sun Aug 22, 2010 1:28 pm

Convection forming near the center...so everyone can stop panicking.
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Re: ATL : Tropical Depression SIX - Discussion

#615 Postby cycloneye » Sun Aug 22, 2010 1:29 pm

AFM is right.

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Re: ATL : Tropical Depression SIX - Discussion

#616 Postby KWT » Sun Aug 22, 2010 1:31 pm

floridasun78 wrote:this starting look like less seas storm high now forecast to be stronger pull td-6 to wnw or w i see kwt still going fish for past few days but he missing that models are changing to more stronger high and more wnw track for next 5 days or longer kwt i think like word fish everyone need keep eye on td6 from leedwards islands to east coast from florida to north


Actually I've said for the last 24hrs we do need to watch this one closer then I orginally thought, the key thing is the upper high forming, if that happens then the threat is there for sure!

I'd still say 70% chance recurve 30% chance of hitting land but thats enough now IMO to take it seriously!

LLC should move closer to the convection in the next 6hrs and at the same time convection will probably develop closer to the systems LLC as is starting to happen.
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Re: ATL : Tropical Depression SIX - Discussion

#617 Postby StarmanHDB » Sun Aug 22, 2010 1:32 pm

Air Force Met wrote:Convection forming near the center...so everyone can stop panicking.


LOL! Too funny!
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Re: ATL : Tropical Depression SIX - Discussion

#618 Postby dixiebreeze » Sun Aug 22, 2010 1:33 pm

Looks like a TS to me: 22/1745 UTC 12.7N 34.6W T2.5/2.5 06L -- Atlantic
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Re: ATL : Tropical Depression SIX - Discussion

#619 Postby cpdaman » Sun Aug 22, 2010 1:33 pm

Air Force Met wrote:Convection forming near the center...so everyone can stop panicking.


better than medication
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#620 Postby lester » Sun Aug 22, 2010 1:34 pm

best track: still a TD

AL, 06, 2010082218, , BEST, 0, 132N, 346W, 30, 1007, TD
Last edited by lester on Sun Aug 22, 2010 1:34 pm, edited 1 time in total.
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