ATL: ISAAC - Models

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gatorcane
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ATL: INVEST 94L

#81 Postby gatorcane » Fri Aug 17, 2012 9:47 pm

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I have been studying the models this evening. I can't see any reason why we won't see them shift more west in the long-range. The mean mid-level flow across North America in the long-range is very zonal with the ECMWF showing high pressure over the northeastern part of the United States. The 18z GFS turns the system north into the Bahamas but there is just barely a weakness there along the eastern seaboard of the United States. It is interesting to note that the FIM model and BAMs show a sharp turn to the north around 50w or sooner long before this system would reach the islands though I am wondering what they are seeing that could cause that track. I am expecting the 00z ECMWF to shift west. I have a feeling this will become Isaac and there will be some long nights and model watching with this one so get ready folks...
Last edited by gatorcane on Fri Aug 17, 2012 10:02 pm, edited 1 time in total.
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#82 Postby KWT » Fri Aug 17, 2012 10:00 pm

Totally agree gatorcane, I don't think that solution of a quick recurve is at all likely. As you say a long 2 weeks to come...
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Re: ATL: INVEST 94L - Models

#83 Postby ROCK » Fri Aug 17, 2012 10:58 pm

00Z GFS is rolling.......78hrs

http://mag.ncep.noaa.gov/NCOMAGWEB/appc ... mageSize=M


keeping it weaker and west for the next 4 days....
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Re: ATL: INVEST 94L - Models

#84 Postby ROCK » Fri Aug 17, 2012 11:03 pm

this is going to get really close to the islands.....not going to be good for someone....already at 50w and about 13N...


http://mag.ncep.noaa.gov/NCOMAGWEB/appc ... mageSize=M
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Re: ATL: INVEST 94L - Models

#85 Postby cycloneye » Fri Aug 17, 2012 11:08 pm

Oh boy!
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Re: ATL: INVEST 94L - Models

#86 Postby ROCK » Fri Aug 17, 2012 11:09 pm

look how low in lat he is....man heading to the islands...at 114hr

http://mag.ncep.noaa.gov/NCOMAGWEB/appc ... mageSize=M
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Re: ATL: INVEST 94L - Models

#87 Postby ROCK » Fri Aug 17, 2012 11:10 pm

cycloneye wrote:Oh boy!



yeah not good for you guys.....man this is going to be really bad, IMO.....


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got a double wammy going....94L heading for the islands....and right on its tail is something else.....

http://mag.ncep.noaa.gov/NCOMAGWEB/appc ... mageSize=M
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Re: ATL: INVEST 94L - Models

#88 Postby ROCK » Fri Aug 17, 2012 11:15 pm

another view...at 126hr

http://raleighwx.americanwx.com/models/ ... SLP126.gif


that is a deep system!!! geez....KWT was right, major in the making....
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Re: ATL: INVEST 94L - Models

#89 Postby USTropics » Fri Aug 17, 2012 11:15 pm

Significantly more south and now very intense storm at 144 hours:

Image
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Re: ATL: INVEST 94L - Models

#90 Postby cycloneye » Fri Aug 17, 2012 11:19 pm

ROCK wrote:another view...at 126hr

http://raleighwx.americanwx.com/models/ ... SLP126.gif


that is a deep system!!! geez....KWT was right, major in the making....


Holy cow. I am going to start to prepare from Saturday in my house just in case it strikes PR.
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Re: ATL: INVEST 94L - Models

#91 Postby ROCK » Fri Aug 17, 2012 11:19 pm

132 hr...that is a hurricane about to enter the carib....

http://raleighwx.americanwx.com/models/ ... SLP132.gif


Luis better hope that ridge holds!! :eek: :eek:

150hr

http://mag.ncep.noaa.gov/NCOMAGWEB/appc ... mageSize=M
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Re: ATL: INVEST 94L - Models

#92 Postby ROCK » Fri Aug 17, 2012 11:23 pm

look at this thing.....geez....major right there...and a nasty one...

http://raleighwx.americanwx.com/models/ ... SLP144.gif


159hr gaining some lat going to really close for PR on this run....

http://raleighwx.americanwx.com/models/ ... SLP156.gif
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Re: ATL: INVEST 94L - Models

#93 Postby ROCK » Fri Aug 17, 2012 11:28 pm

162hr...just call it for what it is....probably a cat 3 at this point....look at the isobars..deep sucker...

http://raleighwx.americanwx.com/models/ ... SLP162.gif
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Re: ATL: INVEST 94L - Models

#94 Postby hurricaneCW » Fri Aug 17, 2012 11:31 pm

Doesn't look like a fish at all, and the next system is right behind it. Those "I" storms are killer.
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#95 Postby KWT » Fri Aug 17, 2012 11:35 pm

Slightly further east this run, but only because it moves slightly slower than the 18z, timing of the WNW/NW motion is exactly the same as the 18z.

Thats a scary run for the E/NE Caribbean thats for sure!
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Re: ATL: INVEST 94L - Models

#96 Postby Blown Away » Fri Aug 17, 2012 11:38 pm

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#97 Postby KWT » Fri Aug 17, 2012 11:39 pm

Center right over PR, probably a 2/3 by that point if the GFS is correct, horrible run for the E.CAribbean.

Weakness to the north at 192hrs but its not exactly the most convincing weakness I've seen...

Recurves further east this run, very little to it though and could just as easily miss that connection...
Last edited by KWT on Fri Aug 17, 2012 11:42 pm, edited 1 time in total.
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Re: ATL: INVEST 94L - Models

#98 Postby ROCK » Fri Aug 17, 2012 11:41 pm

yeah the ridge didnt hold....PR would be devestated by a major....I hope things change on further runs....
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#99 Postby KWT » Fri Aug 17, 2012 11:44 pm

Lets just say Rock thats a very weak connection with the trough, had it been a little further south, I think it'd miss the bus with that weak upper trough and keep trundling WNW/NW....

It really does only just get into that weakness before the flow flattens out ahead of the next upper trough, my word thats close, another 24hrs faster or slower and that run would have been different.

Track is pretty similar to this system:

http://en.wikipedia.org/wiki/Hurricane_Hortense
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Re:

#100 Postby ROCK » Fri Aug 17, 2012 11:48 pm

KWT wrote:Lets just say Rock thats a very weak connection with the trough, had it been a little further south, I think it'd miss the bus with that weak upper trough and keep trundling WNW/NW....

It really does only just get into that weakness before the flow flattens out ahead of the next upper trough, my word thats close, another 24hrs faster or slower and that run would have been different.




agree.....and I can see FL in the crosshairs in further runs tommorow if this trend keeps up....you said Andrew-like and I agree..


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