ATL : TROPICAL DEPRESSION ERIKA (06L)

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Gustywind
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Re: Re:

#1221 Postby Gustywind » Sun Aug 30, 2009 9:20 pm

cycloneye wrote:
george_r_1961 wrote:
Gustywind wrote:Speaking about the size, looks like another member of Bill's family???= HUGE :eek: Decent structure, something is maybe cooking steadily?!
Image


With a system this weak and zero evidence of a surface circulation dont rely too heavily on how it looks on sattelite.

It may "look" good but appearances can be decieving. I think all we have here is a weak mid level vortex at best, giving it a circular appearance. The environment around it isnt very conducive at all and im not surprised convection has waned this evening.


George,the high interest from him for this is because he lives in Guadeloupe.

You're right :) good reasoning Cycloneye :)
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Re: Re:

#1222 Postby jinftl » Sun Aug 30, 2009 9:24 pm

I think folks are holding back on predictions about the Gulf...or anywhere in the u.s.....because there would be no real science behind making such predictions. Gut feelings and hunches don't reflect the science of storms. What the focus is on is what is going on right now with the system....there is alot to be learned (at least I know that's true for me) by observing what is going on, what factors are pro-development and what factors are against it. Track forecasts, beyond 5 days, make no sense for a system that has yet to form.

On a scale of 1-5, with 1 being no concern and 5 being you are in Homestead a few hours before Andrew hit, the concern levels should be:

Miami, Cape Hatteras, New Orleans, Houston, New York = 0.2
Bermuda = 0.4
San Juan = 1.0
NE Caribbean = 1.2


LaBreeze wrote:
Night Tide wrote:I'm guessing most people won't answer about a possible Gulf hit this early on, because they don't want to end up eating crow.

I really doubt it will come here, but that's just me.


I have the same feeling Night Tide.
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Re: ATL : INVEST 94L

#1223 Postby Blown Away » Sun Aug 30, 2009 9:27 pm

LaBreeze wrote:
Night Tide wrote:I'm guessing most people won't answer about a possible Gulf hit this early on, because they don't want to end up eating crow.

I really doubt it will come here, but that's just me.


I have the same feeling Night Tide.


Some models bring 94L N of Hispaniola around next Saturday at the same time the EC trough that is supposed to hang out this week is forecast to begin lifting out. The question is will there be enough weakness to recurve 94L away from SFL/GOM or will the trough lift out and a ridge build in and drive 94L west? :?:
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Re: ATL : INVEST 94L

#1224 Postby canetracker » Sun Aug 30, 2009 9:28 pm

Gustywind:

That is a frightening site to have heading in the general direction. Regardless of what it is (a tropical wave, a forming TD....etc.), it just looks scary. If I saw that at my door step I'd be imitated.

By the way, the Meteo France images are awesome. Would love to have a link to that site.
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Re: ATL : INVEST 94L - Computer Models

#1225 Postby CYCLONE MIKE » Sun Aug 30, 2009 9:28 pm

With all this talk about 94L missing the trough and ridge building in by the time it gets near Dominican Republic, how many days away would it be from south florida on a westward track? Say moving about 15 mph or so?
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Re: ATL : INVEST 94L - Computer Models

#1226 Postby AtlanticWind » Sun Aug 30, 2009 9:30 pm

CYCLONE MIKE wrote:With all this talk about 94L missing the trough and ridge building in by the time it gets near Dominican Republic, how many days away would it be from south florida on a westward track? Say moving about 15 mph or so?

7-8 days maybe
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Re: ATL : INVEST 94L - Computer Models

#1227 Postby Blown Away » Sun Aug 30, 2009 9:33 pm

CYCLONE MIKE wrote:With all this talk about 94L missing the trough and ridge building in by the time it gets near Dominican Republic, how many days away would it be from south florida on a westward track? Say moving about 15 mph or so?


Nogaps, has 94L N of Hipaniola next Saturday, maybe to slow? 9 days IMO. :D
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Re: ATL : INVEST 94L - Computer Models

#1228 Postby Gustywind » Sun Aug 30, 2009 9:34 pm

Blown_away wrote::uarrow: Come on, I don't think you want every post to read something like "After the potential impact on our friends in the Caribbean are affected, does the board think 94L will make it to the GOM?" Come on islanders don't be so sensitive, we all care and support the folks when and wherever a storm strikes! :D :cheesy: :ggreen:


Tkanks my friend, us in the islands appreciate your reply :). For sure Blown_away when you live in an island sensitive is an euphemisma :cheesy: :cry: so we keep your support in our hands hoping the best during the peak of the season. Hope one day you will discover the Lesser Antilles and especially Guadeloupe and appreciate its pleasures :D
Friendly Gustywind :) :sun:
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Re: ATL : INVEST 94L

#1229 Postby AtlanticWind » Sun Aug 30, 2009 9:35 pm

canetracker wrote:Gustywind:

That is a frightening site to have heading in the general direction. Regardless of what it is (a tropical wave, a forming TD....etc.), it just looks scary. If I saw that at my door step I'd be imitated.

By the way, the Meteo France images are awesome. Would love to have a link to that site.

Yeah the Meteo France images would make a rainshower look like Hurricane Andrew :D
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Derek Ortt

#1230 Postby Derek Ortt » Sun Aug 30, 2009 9:36 pm

yep... convection firing around the 14N position
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Re: ATL : INVEST 94L - Computer Models

#1231 Postby CYCLONE MIKE » Sun Aug 30, 2009 9:36 pm

Thanks, well that is plenty of time for another early season front to come through and weaken, push the ridge east and turn whatever 94L is at the time north and avoid the coast. Only time will tell though. But as frequent as they have been coming through would not be the least bit surprised.
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Re: ATL : INVEST 94L - Computer Models

#1232 Postby jinftl » Sun Aug 30, 2009 9:40 pm

As the crow flies, the system is about 2300 miles from Miami.

At 10 mph in speed, it is 9.5 days away from Miami.
At 12 mph in speed, it is 7.9 days away from Miami.
At 15 mph in speed, it is 6.3 days away from Miami.

Shows you just how different a small thing like a few miles per hour in forward speed can impact where the system is in the future. 10 mph vs 15 mph...even on identical tracks....could mean the difference between catching trough or missing it. All comes down to timing, 6 days vs 9 days could mean alot....waiting for the front could easily become waiting for the ridge and vice versa.

Even in a year of troughs, if a system is able to sneak between troughs and catch the wave on a ridge of high pressure....


CYCLONE MIKE wrote:With all this talk about 94L missing the trough and ridge building in by the time it gets near Dominican Republic, how many days away would it be from south florida on a westward track? Say moving about 15 mph or so?
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Re: ATL : INVEST 94L - Computer Models

#1233 Postby Blown Away » Sun Aug 30, 2009 9:44 pm

jinftl wrote:As the crow flies, the system is about 2300 miles from Miami.

At 10 mph in speed, it is 9.5 days away from Miami.
At 12 mph in speed, it is 7.9 days away from Miami.
At 15 mph in speed, it is 6.3 days away from Miami.

Shows you just how different a small thing like a few miles per hour in forward speed can impact where the system is in the future. 10 mph vs 15 mph...even on identical tracks....could mean the difference between catching trough or missing it. All comes down to timing, 6 days vs 9 days could mean alot....waiting for the front could easily become waiting for the ridge and vice versa.

CYCLONE MIKE wrote:With all this talk about 94L missing the trough and ridge building in by the time it gets near Dominican Republic, how many days away would it be from south florida on a westward track? Say moving about 15 mph or so?


Sooner might be better for a recurve from SFL/GOM, but I'm not absolutely sure.
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Re: ATL : INVEST 94L

#1234 Postby tailgater » Sun Aug 30, 2009 9:45 pm

Wow, the first time in a few days that I've checked this one out. Looking at the WV loop I'd say this might get to that major status in my amateur opinion.

http://www.ssd.noaa.gov/goes/east/catl/loop-wv.html
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Re:

#1235 Postby 'CaneFreak » Sun Aug 30, 2009 9:46 pm

Derek Ortt wrote:yep... convection firing around the 14N position


got any more crack where yours came from ? :P :P :P :P :P :P

I don't see any convection firing up there...and even if it was firing up there, its associated with the bands of convection that are spiraling in towards the center that is further south... :wink: :wink: :wink: :wink:
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Re: ATL : INVEST 94L

#1236 Postby Blown Away » Sun Aug 30, 2009 9:51 pm

:uarrow:
Image

Very obvious, IMO.
Last edited by Blown Away on Sun Aug 30, 2009 9:51 pm, edited 1 time in total.
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#1237 Postby Gustywind » Sun Aug 30, 2009 9:51 pm

94 L discussion from crownweather.com

Discussion

Invest 94L Located 950 Miles East Of The Windward Islands:

The overall convection associated with a broad area of low pressure, labeled Invest 94L, has increased overnight and has become better organized. 94L was located about 950 miles east of the Windward Islands this morning. Interests in the Lesser Antilles should pay very close attention to the progress of Invest 94L. 94L was tracking west-northwest at a forward speed of 15 mph and this general course is expected to continue for at least the next couple of days.

The computer forecast guidance is not matching up with what is actually happening with 94L. The dynamical models, such as the GFDL, HWRF and NOGAPS models, forecast an immediate turn to the northwest when in fact it is tracking west-northwest. The simple models, such as the BAM and LBAR models, are forecasting a west-northwest course and do not show any turns to the northwest for the next 3 to 5 days. It is interesting to note that the GFS model weakens 94L and hands the energy off to the north causing a poleward turn. The European model, on the other hand, is forecasting a track very close to the northern Lesser Antilles by late this week. It should be noted that the European model has been the most consistent in keeping this system south of 20 North Latitude.

Here are my thoughts: I think the northeastern Caribbean Islands, from Guadeloupe and points north and then west to Puerto Rico, need to keep very close watch on 94L. I am essentially disregarding the dynamical models as the immediate northwest turn is bogus and I am leaning much closer to a blend of the simple BAM and the European model. I strongly suspect that 94L will pass south of the 15 North/50 West benchmark. This benchmark is for the northeast Caribbean Islands. If a storm passes to the south of that benchmark, then the risk to the northeast Caribbean Islands, from Guadeloupe to Puerto Rico, increases dramatically.

As for development and intensification, all indications are that this system will continue to organize today and I fully suspect it will be classified as a tropical depression by sometime tomorrow, if not earlier. The SHIPS and LGEM models forecast 94L to be a hurricane in about 3 days and then a upper end Category 2 hurricane in 5 days. Based on the fact that shear directly to the north of 94L may actually be creating a outflow channel for it and also the fact that 94L is becoming better and better organized with each passing hour, I have every reason to think that this system will steadily intensify this week.

Again, I want to emphasize that all interests in the Lesser Antilles need to keep a very close eye on the progress of this system.

The next tropical weather discussion will be issued by 6 am EDT Monday.
http://www.crownweather.com/?page_id=325
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Re: ATL : INVEST 94L

#1238 Postby 'CaneFreak » Sun Aug 30, 2009 9:53 pm

Blown_away wrote::uarrow:
Image

Very obvious, IMO.


I see it firing around 14N now :wink: :wink: now that I have a fresh SSD image...
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#1239 Postby artist » Sun Aug 30, 2009 9:54 pm

Derek, you seem to have been right. No crow for you! :cheesy:
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Re: ATL : INVEST 94L

#1240 Postby Typhoon_Willie » Sun Aug 30, 2009 9:56 pm

Looks like there is a wnw component in its movement.
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