ATL: HERMINE - Post-Tropical - Discussion
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- gatorcane
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Re: ATL: INVEST 99L - Discussion
Agreed, in fact there is a tight vorticity looking at the floater even with a thunderstorm that recently blew up over this vorticity a couple of hours ago. I would go with better than not chance something comes out of this too:
http://rammb.cira.colostate.edu/ramsdis ... display=12
http://rammb.cira.colostate.edu/ramsdis ... display=12
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Re: ATL: INVEST 99L - Discussion
looks like they are going more with the Canadian, keeping it near the NE Caribbean
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Re: ATL: INVEST 99L - Discussion
What are the odds of Fiona disintegrate into an open wave and this investment take in all the moisture from her and become a very large system? You can already see that this investment is ingesting some of the moisture from Fiona.
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The posts in this forum are NOT official forecast and should not be used as such. They are just the opinion of the poster and may or may not be backed by sound meteorological data. They are NOT endorsed by any professional institution or storm2k.org. For official information, please refer to the NHC and NWS products.
- p1nheadlarry
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Re: ATL: INVEST 99L - Discussion
Probably will trot wnw as it enters the w Atl before that movement is directed by the building ridge. I don't feel like the Euro forecasting the ULL off the S FL coast would be a big winner for the model, as others have pointed out it's had little luck in doing so. It is a broad circulation, so if the lower level vorticity signature remains as it enters that region, development is likely. NHC doesn't see much in short-term but the 3-5 day window it's likely.
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- Bocadude85
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Re: ATL: INVEST 99L - Discussion
gatorcane wrote:Up to 60%:
I'm actually a little surprised they increased the development chances, obviously they think conditions will be favorable for development.
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Re: ATL: INVEST 99L - Discussion
tarheelprogrammer wrote:LLC becoming better defined it looks like the last few frames of Satellite. How could this be without convection?
Didn't you hear? It's the newest craze!

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Model Runs Cheat Sheet:
GFS (5:30 AM/PM, 11:30 AM/PM)
HWRF, GFDL, UKMET, NAVGEM (6:30-8:00 AM/PM, 12:30-2:00 AM/PM)
ECMWF (1:45 AM/PM)
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- northjaxpro
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Re: ATL: INVEST 99L - Discussion
I think conditions for 99L will improve considerably once the system traverses pass about 55 degrees Longitude as it nears its approach to the NE Caribbean in the next few days. The environment should be much moisturer by that time.
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Re: ATL: INVEST 99L - Discussion
99L appears to be building heaving connectivity on the South side within the last few frames you can see it .Looks like it has started to get its mojo together ,however my concern it's the path it will take.
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Re: ATL: INVEST 99L - Discussion
A strong burst of convection has now popped up below 10 N hope this is not an indicator of rapid intesification.
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Re: ATL: INVEST 99L - Discussion
Bocadude85 wrote:gatorcane wrote:Up to 60%:
I'm actually a little surprised they increased the development chances, obviously they think conditions will be favorable for development.
Impossible! The Euro says it won't develop. /sarcasm
Seriously, it's meteorology, not modelology. Trust the mets at the NHC and don't agonize over each model run.
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Re: ATL: INVEST 99L - Discussion
I'm going to enjoy my weekend, 99L wouldn't be doing much over the next couple of days if not longer, dry mid level air has to really come down across the MDR for anything to develop over the next few days.
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- cycloneye
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Re: ATL: INVEST 99L - Discussion
18z Best Track:
Location: 12.0°N 38.0°W
Maximum Winds: 25 kt Gusts: N/A
Minimum Central Pressure: 1009 mb
Environmental Pressure: 1011 mb
Radius of Circulation: 150 NM
Radius of Maximum Wind: 100 NM
Maximum Winds: 25 kt Gusts: N/A
Minimum Central Pressure: 1009 mb
Environmental Pressure: 1011 mb
Radius of Circulation: 150 NM
Radius of Maximum Wind: 100 NM
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Re: ATL: INVEST 99L - Discussion
it look like 99l pulling moisture from Fiona look sat pic you see it 

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Re: ATL: INVEST 99L - Discussion
looking last loop look starting get moisture round area that it center
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- MGC
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Re: ATL: INVEST 99L - Discussion
The Atlantic ahead of 99L is dry all the way to the Bahamas. I don't see conditions out ahead of 99L improving any time soon until it reaches the Western Atlantic......MGC
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Re: ATL: INVEST 99L - Discussion
MGC wrote:The Atlantic ahead of 99L is dry all the way to the Bahamas. I don't see conditions out ahead of 99L improving any time soon until it reaches the Western Atlantic......MGC
nhc dont see that way
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Re: ATL: INVEST 99L - Discussion
This seems to be weakening even further today if anything, the rotation is not quite as defined as yesterday (the westerly inflow appears to be weakening) and it's almost completely void of convection. Given the subsiding air I'm genuinely not sure what the models that develop this are seeing.
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- tarheelprogrammer
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Re: ATL: INVEST 99L - Discussion
Hammy wrote:This seems to be weakening even further today if anything, the rotation is not quite as defined as yesterday (the westerly inflow appears to be weakening) and it's almost completely void of convection. Given the subsiding air I'm genuinely not sure what the models that develop this are seeing.
I actually think the system is tightening up and convection will fire soon around the center. Just an opinion.
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- AtlanticWind
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Re: ATL: INVEST 99L - Discussion
Hammy wrote:This seems to be weakening even further today if anything, the rotation is not quite as defined as yesterday (the westerly inflow appears to be weakening) and it's almost completely void of convection. Given the subsiding air I'm genuinely not sure what the models that develop this are seeing.
They are seeing down the road when conditions may be better,many systems like Katrina did not necessarily look good
Before they developed.
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