Invest 94L,Near Windwards-Discussions

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Brent
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Re: Invest 94L in Central Atlantic-Discussions-Analysis-Imagery

#181 Postby Brent » Tue Aug 28, 2007 3:01 pm

wxman57 wrote:
Brent wrote:It really looks to be organizing further north... don't think this is bound for SA and I think development is looking more and more likely. Right now is the middle of the day when Dean in it's early stages looked dead!


It's already far enough north that it would likely miss SA, but the question is does it track west across the southern Caribbean toward Central America or does the high to its north weaken and allow a WNW track across NE Caribbean? And remember that every single GFS ensemble run was taking Dean north of the Caribbean, while the operational GFS run kept it to the south. The Euro did very well with Dean, though it's prediction of central pressure was only 100mb off. ;-) And Euro says almost due west with 94L.

NOGAPS also did well with Dean, perhaps because it's always had a left bias. Haven't looked at the NOGAPS yet... Hmm, doesn't show anything there.


I honestly can't see a straight west track at all. The ridge is starting to break down here(afternoon storms are all over the place, there were NONE during Dean, and the heat has backed down from the 100's during Dean to seasonal norms of low 90's), and plus you have to look at the calendar. Climo argues against it with September just a few days away.
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Re: Invest 94L in Central Atlantic-Discussions-Analysis-Imagery

#182 Postby wxman57 » Tue Aug 28, 2007 3:02 pm

Take a look at model guidance for Dean as it passed 40W. We were pretty sure it was heading for the NE Caribbean. The models were clueless as to the strength of the ridge to its north. What makes you think they're not clueless now? Just be careful believing in any model consensus until we get a little track history.

Image
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Re: Invest 94L in Central Atlantic-Discussions-Analysis-Imagery

#183 Postby wxman57 » Tue Aug 28, 2007 3:03 pm

Brent wrote:
I honestly can't see a straight west track at all. The ridge is starting to break down here(afternoon storms are all over the place, there were NONE during Dean, and the heat has backed down from the 100's during Dean to seasonal norms of low 90's), and plus you have to look at the calendar. Climo argues against it with September just a few days away.



You're talking about 2 different ridges - the one north of Dean isn't impacting Alabama today.
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#184 Postby gatorcane » Tue Aug 28, 2007 3:03 pm

Lets look at how the global models are handling the Southern CONUS ridge down the road (144 hours)

GFS - builds the ridge -> would keep this on a westward course like DEan

NOGAPS - weakens the ridge -> would turn this system into the GOM or SE US

CMC - weakens the ridge -> would turn this system into the GOM or SE US

UKM - strengthens the ridge but shows a weakness near the Bahamas -> would turn the system up into Florida


It's going to get interesting if this thing can miss SA.....what perfect timing for Labor Day Weekend
:eek: :grr: :eek: :grr:

I'm sure some of the promets are hoping it doesn't have a chance of impacting the SE US or GOM because it would mean some looong hours this weekend in the office.
Last edited by gatorcane on Tue Aug 28, 2007 3:05 pm, edited 1 time in total.
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Re:

#185 Postby miamicanes177 » Tue Aug 28, 2007 3:04 pm

gatorcane wrote:probably not going to hit SA as the models are already shifting north
I agree 100%. As we go through time the models will get a better handle on the track. They are already trending northward away from south america. I put the chances of 94L slamming into South America straight on at less than 5%.
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#186 Postby 'CaneFreak » Tue Aug 28, 2007 3:06 pm

Anyone got a center fix and a heading?
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Re:

#187 Postby wxman57 » Tue Aug 28, 2007 3:07 pm

gatorcane wrote:Lets look at how the global models are handling the Southern CONUS ridge down the road (144 hours)

GFS - builds the ridge -> would keep this on a westward course like DEan

NOGAPS - weakens the ridge -> would turn this system into the GOM or SE US

CMC - weakens the ridge -> would turn this system into the GOM or SE US

UKM - strengthens the ridge but shows a weakness near the Bahamas -> would turn the system up into Florida


It's going to get interesting if this thing can miss SA.....what perfect timing for Labor Day Weekend
:eek: :grr: :eek: :grr:

I'm sure some of the promets are hoping it doesn't have a chance of impacting the SE US or GOM because it would mean some looong hours this weekend in the office.



It's not the southern U.S. ridge that is keeping 94L from recurving. It's a separate ridge that is moving west with 94L. The key is what the ridge north of 94L will do, as far as the future path.
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Re:

#188 Postby wxman57 » Tue Aug 28, 2007 3:11 pm

'CaneFreak wrote:Anyone got a center fix and a heading?


Difficult to do, but I measure about 275-282 degrees and a movement of 110-120 nm in 6 hours. That's between 18-19 kts to the west. There's nothing good to fix on for a position, though.

I just took another look at an 8hr loop and got about a 275 degree movement of 145nm. That's still about 18 kts. I put the "center" near 10.8N/43.2W at 3pm CDT, which is well SW of the heavier convection.
Last edited by wxman57 on Tue Aug 28, 2007 3:17 pm, edited 2 times in total.
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Re: Invest 94L in Central Atlantic-Discussions-Analysis-Imagery

#189 Postby windstorm99 » Tue Aug 28, 2007 3:11 pm

I already see some hints of banding on infrared imagery....See loop
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#190 Postby RL3AO » Tue Aug 28, 2007 3:14 pm

The recon POTD should mention this tomorrow about a possible flight Thurday/Friday.
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Re: Re:

#191 Postby gatorcane » Tue Aug 28, 2007 3:16 pm

wxman57 wrote:
gatorcane wrote:Lets look at how the global models are handling the Southern CONUS ridge down the road (144 hours)

GFS - builds the ridge -> would keep this on a westward course like DEan

NOGAPS - weakens the ridge -> would turn this system into the GOM or SE US

CMC - weakens the ridge -> would turn this system into the GOM or SE US

UKM - strengthens the ridge but shows a weakness near the Bahamas -> would turn the system up into Florida


It's going to get interesting if this thing can miss SA.....what perfect timing for Labor Day Weekend
:eek: :grr: :eek: :grr:

I'm sure some of the promets are hoping it doesn't have a chance of impacting the SE US or GOM because it would mean some looong hours this weekend in the office.



It's not the southern U.S. ridge that is keeping 94L from recurving. It's a separate ridge that is moving west with 94L. The key is what the ridge north of 94L will do, as far as the future path.


Yes I know but the models take that into account and I am just reporting what the models are showing at 144 hours. I think we can conlude we don't know yet if it will impact the US at all.

Or course most of the Globals have not latched onto this system yet anyway.
Last edited by gatorcane on Tue Aug 28, 2007 3:16 pm, edited 2 times in total.
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Re: Invest 94L in Central Atlantic-Discussions-Analysis-Imagery

#192 Postby dtrain44 » Tue Aug 28, 2007 3:16 pm

Windstorm, I'm not seeing banding. What are you seeing that indicates that? I just see persistent convection and a loose circulation between this and other sat images.....
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Re: Invest 94L in Central Atlantic-Discussions-Analysis-Imagery

#193 Postby ronjon » Tue Aug 28, 2007 3:18 pm

With the heavy convective flareup to the north of the presumed center, we may have a relocation of the LLC to the north - perhaps closer to 12N.
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#194 Postby HURAKAN » Tue Aug 28, 2007 3:18 pm

I think people are starting to see what they want to see. It's not impossible for this to become a TD in the next 48 hrs, but for now there is nothing organized or showing sings of organization. It's just an area of disturbed weather moving in the easterlies.
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Re: Invest 94L in Central Atlantic-Discussions-Analysis-Imagery

#195 Postby windstorm99 » Tue Aug 28, 2007 3:18 pm

dtrain44 wrote:Windstorm, I'm not seeing banding. What are you seeing that indicates that? I just see persistent convection and a loose circulation between this and other sat images.....


Nothing to significant as you have noted but i said HINTS of some banding with 94L.Upper level winds as noted by the NHC are favorable for slow intensification.
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Re: Invest 94L in Central Atlantic-Discussions-Analysis-Imagery

#196 Postby gatorcane » Tue Aug 28, 2007 3:20 pm

windstorm99 wrote:
dtrain44 wrote:Windstorm, I'm not seeing banding. What are you seeing that indicates that? I just see persistent convection and a loose circulation between this and other sat images.....


Nothing to significant as you have noted but i said HINTS of some banding with 94L.Upper level winds as noted by the NHC are favorable for slow intensification.


Who wants to bet the NHC says something like this in their next TWO:

"the tropical wave with surface low has become better organized today and a tropical depression could form during the next 24-48 hours as it moves W at 15-20mph." :eek:

Felix is that you?
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#197 Postby Buck » Tue Aug 28, 2007 3:22 pm

Yeah, its definitely not much to look at. If this persists, though, I'd guess that it could start getting it's act together tomorrow night and possibly be a TD by Thursday or Friday.
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Re:

#198 Postby windstorm99 » Tue Aug 28, 2007 3:22 pm

HURAKAN wrote:I think people are starting to see what they want to see. It's not impossible for this to become a TD in the next 48 hrs, but for now there is nothing organized or showing sings of organization. It's just an area of disturbed weather moving in the easterlies.


We'll i respect your opinion 100 percent but last time i checked we are all in our right to have our own opinion on things.As far as development thats correct theres nothing out in the region to be to concerned about but as we approach the peak of the season things can change quickly.Adrian
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Re:

#199 Postby Brent » Tue Aug 28, 2007 3:25 pm

HURAKAN wrote:I think people are starting to see what they want to see. It's not impossible for this to become a TD in the next 48 hrs, but for now there is nothing organized or showing sings of organization. It's just an area of disturbed weather moving in the easterlies.


Considering there was nothing there yesterday it's definitely gotten better organized. It's on the right track.
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Re: Re:

#200 Postby HURAKAN » Tue Aug 28, 2007 3:25 pm

windstorm99 wrote:
HURAKAN wrote:I think people are starting to see what they want to see. It's not impossible for this to become a TD in the next 48 hrs, but for now there is nothing organized or showing sings of organization. It's just an area of disturbed weather moving in the easterlies.


We'll i respect your opinion 100 percent but last time i checked we are all in our right to have our own opinion on things.As far as development thats correct theres nothing out in the region to be to concerned about but as we approach the peak of the season things can change quickly.Adrian


I also want to see Felix out of this but so far Felix is not around the corner. 94L may become Felix but it's still far from it.
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