will we have an invest 96L soon?

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Kerry04
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Re: will we have an invest 96L soon?

#121 Postby Kerry04 » Mon Jul 02, 2007 6:52 pm

cycloneye wrote:The only mention of the weak low is in the ITCZ section of the discussion,not a good sign being mentioned in the ITCZ paragrafh.

THE ITCZ...
ITCZ AXIS IS CENTERED ALONG 9N12W 8N23W 9N32W 7N59W. A BROAD
1014 MB LOW IS EMBEDDED WITHIN THE ITCZ NEAR 8.5N35.5W.
SCATTERED MODERATE CONVECTION IS WITHIN 150 NM S OF THE ITCZ
AXIS FROM 14W-21W AND CLUSTERS OF SIMILAR CONVECTION ARE WITHIN
75 NM OF THE AXIS FROM 35W-43W.


So why is that not a good sign cycloneye? I guess they dont think it will do much huh?
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Re: will we have an invest 96L soon?

#122 Postby cycloneye » Mon Jul 02, 2007 6:54 pm

Kerry04 wrote:
cycloneye wrote:The only mention of the weak low is in the ITCZ section of the discussion,not a good sign being mentioned in the ITCZ paragrafh.

THE ITCZ...
ITCZ AXIS IS CENTERED ALONG 9N12W 8N23W 9N32W 7N59W. A BROAD
1014 MB LOW IS EMBEDDED WITHIN THE ITCZ NEAR 8.5N35.5W.
SCATTERED MODERATE CONVECTION IS WITHIN 150 NM S OF THE ITCZ
AXIS FROM 14W-21W AND CLUSTERS OF SIMILAR CONVECTION ARE WITHIN
75 NM OF THE AXIS FROM 35W-43W.


So why is that not a good sign cycloneye? I guess they dont think it will do much huh?


Because the low is embeded with the ITCZ or Intertropical Convergence Zone and that is not favorable for any development to take place.It has to detach from the ITCZ.
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Re: will we have an invest 96L soon?

#123 Postby Kerry04 » Mon Jul 02, 2007 7:02 pm

k. thanks
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Re: will we have an invest 96L soon?

#124 Postby Weatherfreak000 » Mon Jul 02, 2007 7:04 pm

Not at all a surprising event, this system needs to start gaining latitude quickly. It it's a wave that slowly creeps up then it'll lose it's envelope for development and be hit with shear.


Don't concentrate on how it's looking convection wise, you need to be looking to see if it begins moving North, and if the low persists.
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Re: will we have an invest 96L soon?

#125 Postby abjolly » Mon Jul 02, 2007 7:08 pm

"Because the low is embeded with the ITCZ or Intertropical Convergence Zone and that is not favorable for any development to take place.It has to detach from the ITCZ."

And the reason the ITCZ is not favorable for development is...
Like being on a conveyor belt and unable to do your thing?
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Re: will we have an invest 96L soon?

#126 Postby jrod » Mon Jul 02, 2007 7:11 pm

Weatherfreak000 wrote:Not at all a surprising event, this system needs to start gaining latitude quickly.


I meant to write that on my post, IIRC Venzuela rarely gets hit by a wave and never by anything more.
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Derek Ortt

Re: will we have an invest 96L soon?

#127 Postby Derek Ortt » Mon Jul 02, 2007 8:48 pm

Venezuela has been hit by tropical storms and hurricanes before, some of which (Bret and Cesar) were very destructive and deadly
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#128 Postby Cyclone1 » Mon Jul 02, 2007 8:51 pm

Convection is waning...
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Re: will we have an invest 96L soon?

#129 Postby Cyclone1 » Mon Jul 02, 2007 8:52 pm

Derek Ortt wrote:Venezuela has been hit by tropical storms and hurricanes before, some of which (Bret and Cesar) were very destructive and deadly

Didn't Joan cause quite a bit of damage there, too?
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Derek Ortt

Re: will we have an invest 96L soon?

#130 Postby Derek Ortt » Mon Jul 02, 2007 8:55 pm

I believe so. Also acquirred major hurricane status while near an 18,000 foot mountain (same one that nearly killed Bret)

It is also the last hurricane to affect the ABC islands with hurricane conditions
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Re: will we have an invest 96L soon?

#131 Postby windstorm99 » Mon Jul 02, 2007 9:03 pm

Iam more concerned about this wave if it can hang on for the next 2-3 days as conditions entering the caribbean will be more favorable as sst's are warmer at the overall atmosphere is somewhat more unstable.The odds are againest it developing this early in the season this far out but its still worth keeping and i on.Adrian
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Re: will we have an invest 96L soon?

#132 Postby Ivanhater » Mon Jul 02, 2007 9:05 pm

Convection on the increase...

Image
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#133 Postby Cyclone1 » Mon Jul 02, 2007 9:09 pm

Hmm, I guess it is. I was wrong, which is good!
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Re: will we have an invest 96L soon?

#134 Postby Berwick Bay » Mon Jul 02, 2007 9:10 pm

Looks like another blow-up of convection (and in the evening, which is a good sign) at the east end (I think the potential center) of this wave.
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Re: will we have an invest 96L soon?

#135 Postby cheezyWXguy » Mon Jul 02, 2007 9:16 pm

Although the system overall does not have a lot of convection, it continues to form convection right around the circulation's center, which may help it to develop further, and is one step in the right direction
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Re: will we have an invest 96L soon?

#136 Postby canetracker » Mon Jul 02, 2007 9:18 pm

Weatherfreak000 wrote:Not at all a surprising event, this system needs to start gaining latitude quickly. It it's a wave that slowly creeps up then it'll lose it's envelope for development and be hit with shear.


Don't concentrate on how it's looking convection wise, you need to be looking to see if it begins moving North, and if the low persists.

Despite the nice appearance of this wave, I totally agree. The ITCZ imbedding is working against development. Unless this wave can seperate itself and then survive the shear it will encounter in the Caribbean, I don't see this being an event.
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Re: will we have an invest 96L soon?

#137 Postby cycloneye » Mon Jul 02, 2007 9:31 pm

ABNT20 KNHC 030229
TWOAT
TROPICAL WEATHER OUTLOOK
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1030 PM EDT MON JUL 2 2007

FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO...

A LOW PRESSURE AREA IN THE CENTRAL ATLANTIC OCEAN ABOUT MIDWAY
BETWEEN AFRICA AND SOUTH AMERICA CONTINUES MOVING WESTWARD AT ABOUT
15 TO 20 MPH. ASSOCIATED SHOWER ACTIVITY HAS INCREASED SLIGHTLY
THIS EVENING...BUT CONDITIONS DO NOT APPEAR FAVORABLE FOR
SIGNIFICANT DEVELOPMENT OF THIS SYSTEM DURING THE NEXT COUPLE OF
DAYS.

ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE
NEXT 48 HOURS.

$$
FORECASTER KNABB



Slight twiking of words but nothing serious about this developing.
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Weatherfreak000

Re: will we have an invest 96L soon? 10:30 PM TWO Posted

#138 Postby Weatherfreak000 » Mon Jul 02, 2007 9:40 pm

I believe the hints of a slightly more Northerly Component to this area's movement may be in the works.


If what i'm seeing holds true, and convection increased marginally, we should definitely have a 96L come tomorrow.
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Re: will we have an invest 96L soon? 10:30 PM TWO Posted

#139 Postby Aric Dunn » Mon Jul 02, 2007 9:49 pm

interesting... i would like some feedback .. the loop http://www.ssd.noaa.gov/goes/flt/t1/loop-rgb.html clearly shows the LLC.. the lastest convection bloom( small at the moment) has occured over the center..

anyway main point there are some signs that its breaking away slowly from the ITCZ>.


the image below is a crude drawing but should work!

the red colors are what we have going on now
the blue is what we normally see when there is a low embedded in the ITCZ..

when it is embedded you normally dont have the inflow or convergence on the west and sw side which would inhibit development.. and it what we had this morning and yesterday.. but this evening if you watch the loop the LLC is moving wnw away from the ITCZ and you can clearly see that.. the other thing is the inflow that is normally missing is now present due to the LLC possibly breaking off.. which would explain the convection near the center..
now there is still some inflow impedance but most of the circulation appears free .. if that is the case we may see something more than previously thought and since its night that gives it a little less accuracy and the NHC is not going to say much (which they did not) if in the morning the (red line ) or ITCZ is buckling more and wrapping into the center then we may be see something more?
.
Image

http://www.ssd.noaa.gov/goes/flt/t1/loop-rgb.html
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#140 Postby WindRunner » Mon Jul 02, 2007 9:49 pm

Yes, it will be moving more northerly over the next couple of days, though the slow westward motion will continue as well.
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