Earl Advisories
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Brent wrote:There is a spin at 15 N. I think it's an MLC though. It's exposed on the western edge of the convection.
If you are talking about the one at 15N / 74 - 72 west...that is a low level vort max. The IR temps for that area are b/w 10C and 13C...which is consistent with low level cu with tops b/w 8,000-10,000 feet. If this was a mid-level swirl, the IR temps would be in the 0C - -10C range.
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Derek Ortt wrote:see my 2nd post. I was too lazy to look at a recent sat prior to making post one, lol
Gotcha. I don't think it will slow down though. It's pretty much under the weakness in the ridge (which is very slight) and still to the east of the high in the eastern GOM. Once it completely passes the ridge weakness...it then begins to get steered by the high in the eastern GOM...through 48 hours. At that point (after it passes the weakness and gets under the eastern GOM high), it has no choice but to speed up as the gradient increases.
So...given the fact that the high will be in the eastern GOM...and it has to pass under it...I don't see how it can slow down much. It can't start to slow until it passes the ridge axis.
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If Earl slows down and regenerates, it will be between 75W
and 77W...there seems to be some outflow to the NE right now...and once again the signs of convection build-up at 15N-75W. If stops dead in his tracks I think he may start drifting NW once he's south of Jamaica. I'd be willing to bet there's been a weak LLC tucked away in there somewhere all day. Could be wrong, but the next few hours will tell the tell.
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Same old story with Earl tonight
Convection back on the rise tonight with Earl.... looks to be developing in the general area of what should be Earl's center of circulation, be it an LLC or MLC.... best guess looking at the IR loops is 15.0N and 75.6W... same thing happened about the same time as last night but last night looked a little more impressive, but its still early... nocturnal effects taking action again... at least he's consistent thus far.... Looks to be a weak upper level just to the west of the former tropical storm know as Earl... system still moving towards the west or perhaps just north of due west
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Earl does not have much time
If he does not get his act together quickly he will plow right into Central America. I am starting to think that is what is going to happen. Oh well, dodged another one.
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the way it has been going of late might not be to far off... needs to slow down and get some northerly component to it, he's running out of time... that being said, you just never know with these things... look at Bonnie just a week ago, and the surprises we had with that system.... still, I think a track to central america or mexico certainly seems plausable right now...
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The only way Earl can survive a trip to the US...
is if enough of a disturbance (wave, vort energy, depression or TS) can make it across the Yucatan and into the Bay of Campeche or Southern Gulf. Tonight's US models are placing a weak spot in the ridge because of an ULL over/near TX by Thurs/Fri. If that ends up being the case, the southerly component of the flow ahead of it would slowly pull the circulation north. The Eta actually lets it sit in the BOC, which could be bad for Mexico or the US since the water is so hot there now. Other models are also hinting at very weak flow in this location by Friday, so any remains would sit (and likely explode w/ little shear especially if it is far enough from the coast). The thing to watch is that circulation over Nevada (and of course the ridge over FL). If the NV low shoots E there will be less of a chance of the storm making it N, if it goes SE, that will weaken the ridge sufficiently for a move towards the Gulf coast. That's how I see it now, and it seems relatively reasonable.
Update / Tuesday morning - looks like most of Earl's energy will slam into Central America, so the above scenario doesn't seem quite as likely. The only way I see it happening is if some of the energy can feed into the disturbance over the BOC. The only time in the last 10 years an actual storm has gone through all of central America and back into the Gulf was Mitch in '98. Of course, he was a Cat 5.
Update / Tuesday morning - looks like most of Earl's energy will slam into Central America, so the above scenario doesn't seem quite as likely. The only way I see it happening is if some of the energy can feed into the disturbance over the BOC. The only time in the last 10 years an actual storm has gone through all of central America and back into the Gulf was Mitch in '98. Of course, he was a Cat 5.
Last edited by PurdueWx80 on Tue Aug 17, 2004 9:23 am, edited 2 times in total.
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