91L invest Bahamas,Comments,Sat Pics,Models Thread #1

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skysummit
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#361 Postby skysummit » Fri Jun 23, 2006 8:56 pm

wxwonder12 wrote:How come the NHC is indicating that this system has potential for development, even though slow, and it is being said that it better hurry up and start with some convection or it will be nothing????


Because people or kind of impatient. Nothing will happen until that ULL moves...if it ever does. IMO, tomorrow would be the day for the best chances at organization.
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#362 Postby Trader Ron » Fri Jun 23, 2006 8:56 pm

I think dry air is the culpret.
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CHRISTY

#363 Postby CHRISTY » Fri Jun 23, 2006 8:59 pm

wxman57 wrote:
Matt-hurricanewatcher wrote:
wxman57 wrote:
There may not be an LLC tomorrow, either. But I think that, in this case, the strong model agreement is partly because the models really DO have a good "center" to track. They're tracking the low-mid level vorticity (spin) center. That's fairly well-established and embedded in the low to mid-level flow. There is plenty of model agreement that this vorticity center will track toward NE Florida over the weekend, reaching the coast on Sunday, whether or not an LLC develops beneath it. It's unlikely that any LLC would be able to survive unless it's under this vorticity center, so I would trust the models which look at mid-level steering and are taking it WNW.

With so much dry air and wind shear, I'm wondering if it'll even mean much rain for FL or GA. Might not be much of a rain maker until its moisture tracks up the front across the northeast U.S.


I agree but a report from vortex shows that there is west-southwest winds to the south of the low. So it could be at the surface. Do I expect it to be strong on. Maybe a subtropical like system maybe maxing at no more then 40 knots. Then I expect it to turn to the northwest then north as the trough/jet stream at around 95-97 reinforces the trough/long wave over the northern east coast/Pa and great lake area. Which should weaken the high to the north. Yes theres dry air but I'v seen many a system develop with a ull to its west. Grace,Fay,Bill to name a few.


What's "vortex"? I've been looking at surface plots of all ships/buoys/land stations in the area all day and see no evidence of any LLC, but pressures continue to fall in the area, down about 4-5 mb since yesterday. With convection falling off now, I'm becoming less concerned that it'll be anything more than a weak surface low at landfall.


were is the WNW movement?it should have gone up in latitude if it was moving WNW.On this loop it looks like a broad center spinning towards florida.in my opinion its creeping west very slowly and it will be on the coast before the trough catches it.
http://www.ssd.noaa.gov/goes/flt/t1/loop-avn.html
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#364 Postby cycloneye » Fri Jun 23, 2006 9:13 pm

ABNT20 KNHC 240209
TWOAT
TROPICAL WEATHER OUTLOOK
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1030 PM EDT FRI JUN 23 2006

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

THE BROAD AREA OF LOW PRESSURE CENTERED JUST EAST OF THE
NORTHWESTERN BAHAMAS IS NOT SHOWING SIGNS OF DEVELOPING AT THIS
TIME. HOWEVER...THERE IS STILL A POTENTIAL FOR A TROPICAL OR
SUBTROPICAL DEPRESSION TO FORM WITHIN THE NEXT DAY OR SO AS THE
SYSTEM DRIFTS TOWARD THE WEST-NORTHWEST. AN AIR FORCE RESERVE
HURRICANE HUNTER AIRCRAFT IS SCHEDULED TO INVESTIGATE THE SYSTEM ON
SATURDAY...IF NECESSARY.

ELSEWHERE...TROPICAL STORM FORMATION IS NOT EXPECTED THROUGH
SUNDAY.

$$

FORECASTER AVILA/MAINELLI

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#365 Postby johngaltfla » Fri Jun 23, 2006 9:14 pm

wxman57 wrote:
Matt-hurricanewatcher wrote:
wxman57 wrote:
There may not be an LLC tomorrow, either. But I think that, in this case, the strong model agreement is partly because the models really DO have a good "center" to track. They're tracking the low-mid level vorticity (spin) center. That's fairly well-established and embedded in the low to mid-level flow. There is plenty of model agreement that this vorticity center will track toward NE Florida over the weekend, reaching the coast on Sunday, whether or not an LLC develops beneath it. It's unlikely that any LLC would be able to survive unless it's under this vorticity center, so I would trust the models which look at mid-level steering and are taking it WNW.

With so much dry air and wind shear, I'm wondering if it'll even mean much rain for FL or GA. Might not be much of a rain maker until its moisture tracks up the front across the northeast U.S.


I agree but a report from vortex shows that there is west-southwest winds to the south of the low. So it could be at the surface. Do I expect it to be strong on. Maybe a subtropical like system maybe maxing at no more then 40 knots. Then I expect it to turn to the northwest then north as the trough/jet stream at around 95-97 reinforces the trough/long wave over the northern east coast/Pa and great lake area. Which should weaken the high to the north. Yes theres dry air but I'v seen many a system develop with a ull to its west. Grace,Fay,Bill to name a few.


What's "vortex"? I've been looking at surface plots of all ships/buoys/land stations in the area all day and see no evidence of any LLC, but pressures continue to fall in the area, down about 4-5 mb since yesterday. With convection falling off now, I'm becoming less concerned that it'll be anything more than a weak surface low at landfall.


"Vortex" is our local weatherman's radar image/satellite image visual modeling program here in town. It shows a moderate to weak low crossing central Florida this weekend dumping lots of rain on Sunday.

If that's what is being referred to, then perhaps we should wait for the "True View" and "SuperDooperHDVortexViperETC" models at the 11 pm news.

No slam intended but I'm not getting excited yet. If the lower level circulation survives the night and intensifies, then yeah, we should see something tommorrow night.

Otherwise, it's just going to rain.
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#366 Postby CHRISTY » Fri Jun 23, 2006 9:33 pm

WAVE HEIGHTS AROUND THIS SYSTEM....

Image

dark Green 1-3 feet
blue 4 to 6 feet
light green 7 to 9 feet
yellow 10-12 feet
purple 13-15 feet
orange 21-25 feet
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#367 Postby skysummit » Fri Jun 23, 2006 9:36 pm

I highly doubt there are waves 25ft high out there. This is showing 5 - 8 feet at the most.

Image
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#368 Postby Evil Jeremy » Fri Jun 23, 2006 9:51 pm

im becoming more concerned with the big flare up SW of the Invest rithg now!!!!!!!!!
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#369 Postby skysummit » Fri Jun 23, 2006 9:59 pm

00z Model Guidance:

Image
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#370 Postby curtadams » Fri Jun 23, 2006 10:04 pm

Evil Jeremy wrote:im becoming more concerned with the big flare up SW of the Invest rithg now!!!!!!!!!

Check the "May need to watch NE of the Islands as well" thread. CMC and GFS are predicting that will develop into a pretty strong fish storm wandering about in the Atlantic.
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CHRISTY

#371 Postby CHRISTY » Fri Jun 23, 2006 10:23 pm

Guys ive been looking at a few visible & IR loops and i really believe if thunderstorms dont make a come back the RECON FLIGHT might be a no go.This thing has just gone poof.void of convection.2 words DRY AIR.
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#372 Postby cpdaman » Fri Jun 23, 2006 10:23 pm

this storm appears to be a joke i apologize for getting excited about it earlier


is there any reason to go to bed thinking this may be in a better enviornment shear wise tomorrow? cause SST are gonna be pretty warm
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#373 Postby HURAKAN » Fri Jun 23, 2006 10:24 pm

CHRISTY wrote:Guys ive been looking at a few visible & IR loops and i really believe if thunderstorms dont make a come back the RECON FLIGHT might be a no go.This thing has just gone poof.void of convection.2 words DRY AIR.


You can bet on it!!!
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#374 Postby wxmann_91 » Fri Jun 23, 2006 10:33 pm

I'm not counting on this being Beryl. None of the models (except for the NAM which always develops spurious TC's) have developed a system. Additionally, the environment is not favorable with the dry air.
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#375 Postby SouthFloridawx » Fri Jun 23, 2006 10:41 pm

I have been looking at the IR sat at this thing and it looks as though it is still devoid of convection. I tend to believe the the large circulation is as in the picture that follows, any comments?

Image
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#376 Postby cheezyWXguy » Fri Jun 23, 2006 10:44 pm

in the last few frames of the radar it looks like a small c shape has formed in new convection..is that that the center?

http://www.ssd.noaa.gov/goes/flt/t1/loop-avn.html
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#377 Postby cheezyWXguy » Fri Jun 23, 2006 10:45 pm

SouthFloridawx wrote:I have been looking at the IR sat at this thing and it looks as though it is still devoid of convection. I tend to believe the the large circulation is as in the picture that follows, any comments?

Image


i think uve got the ULL
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#378 Postby curtadams » Fri Jun 23, 2006 10:50 pm

SouthFloridawx wrote:I have been looking at the IR sat at this thing and it looks as though it is still devoid of convection. I tend to believe the the large circulation is as in the picture that follows, any comments?

Image

I think it's a little north of there, more or less at the tip of the clouds. Rights now it's easiest to see on water vapor http://www.ssd.noaa.gov/goes/flt/t1/wv-l.jpg
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#379 Postby SouthFloridawx » Fri Jun 23, 2006 10:56 pm

Ok thanks for your input. I thought the ULL was a more elongated and farther to the west.

http://www.nhc.noaa.gov/tafb/ATSA_18Z.gif

As depicted in the graphic above you are correct in assuming that it is north of the location I indicated before.

This thing is going to need a wing and a prayer... not to mention a kick in the pants, a few beers, some pretzels, dinner and Banana Split to get going. :wink:
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#380 Postby boca » Fri Jun 23, 2006 10:57 pm

This system is one giant upper low with little vortices swinging around the main center around 24.5 N.
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