Tropical Wave just off African Coast (Is Invest 94L)

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HurricaneMaster_PR
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Disturbed Weather in West Africa

#41 Postby HurricaneMaster_PR » Fri Aug 16, 2013 4:11 pm

Really nice rotation and increasing its thunderstorm activity as it prepares to emerge from Africa
http://tropicaltidbits.com/satellite/images/eatl_ir.gif
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Re: Disturbed Weather in West Africa

#42 Postby somethingfunny » Fri Aug 16, 2013 4:55 pm

cycloneye wrote:Saved image at 14:00 UTC. Notice the big circulation around 10.5N just behind the convection.

http://oi40.tinypic.com/2ekkxl0.jpg


Is that circulation surface-based or upper-level? Seems like an odd location, I'm also noticing the image is from early afternoon in West Africa and it's just firing up two or three individual thunderstorms.
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Re: Disturbed Weather in West Africa

#43 Postby cycloneye » Fri Aug 16, 2013 5:16 pm

somethingfunny wrote:
cycloneye wrote:Saved image at 14:00 UTC. Notice the big circulation around 10.5N just behind the convection.

http://oi40.tinypic.com/2ekkxl0.jpg


Is that circulation surface-based or upper-level? Seems like an odd location, I'm also noticing the image is from early afternoon in West Africa and it's just firing up two or three individual thunderstorms.


Here is the saved image at 21:00 UTC. Notice the circulation is filled with convection.

Image
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#44 Postby somethingfunny » Fri Aug 16, 2013 5:23 pm

The area emerging off the coast now is definitely a broad rotation though perhaps not closed off. Its' convection seems to be waning as it emerges, as more convection (maybe diurnal) blossoms on the second circulation, in southern Mali. It will be interesting to see how these competing circulations interact; any tropical development would likely be slow.
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Re: Disturbed Weather in West Africa

#45 Postby cycloneye » Fri Aug 16, 2013 5:56 pm

This system ends up near Bermuda on the 18z GFS. What is down there is another story. :)

Image
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Re: Disturbed Weather in West Africa

#46 Postby SFLcane » Fri Aug 16, 2013 8:10 pm

Large impressive wave..good bet for out next named storm in a few days.

Image

Image
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#47 Postby TheStormExpert » Fri Aug 16, 2013 8:16 pm

The big question is will it stay far enough south and continue on a westward track a some time to be able to avoid to cooler SST's and stable air, or will it take a very similar track as Erin and head WNW right into the cooler SST's and stable air? If it develops quickly like Erin did I would assume it would take the same kind of track as Erin.
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Re: Disturbed Weather in West Africa

#48 Postby TheStormExpert » Fri Aug 16, 2013 8:24 pm

SFLcane wrote:Large impressive wave..good bet for out next named storm in a few days.

http://www.tropicaltidbits.com/satellit ... atl_ir.gif

http://www.tropicaltidbits.com/satellit ... tl_vis.gif

Wow! What a big circulation, could this help it fight off some of the unfavorable conditions like stable air in it's life?
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#49 Postby Gustywind » Fri Aug 16, 2013 8:33 pm

:uarrow: :eek:
That's a very strong circulation! Very interresting to see how this disturbed weather reacts once it come entirely offshore...
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Re: Disturbed Weather in West Africa

#50 Postby cycloneye » Fri Aug 16, 2013 8:35 pm

Important to note that this system is 3-4 degrees more south in latitude than the wave that spawned Erin emerged.
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#51 Postby alienstorm » Fri Aug 16, 2013 8:48 pm

The main one is the one to the southeast, could make argument for a TD already. GFS is taking it to the west and then Northwest out to sea.
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#52 Postby TheStormExpert » Fri Aug 16, 2013 8:54 pm

:uarrow: I thought I heard on here several times before that the GFS tends to underestimate ridging?
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Re: Disturbed Weather in West Africa

#53 Postby HurricaneDREW92 » Sat Aug 17, 2013 6:25 am

Latest:
Image

Looks to be good for code yellow @ 8am.
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ninel conde

#54 Postby ninel conde » Sat Aug 17, 2013 6:28 am

it will have alot of dry air issues behind erin.

http://tropic.ssec.wisc.edu/real-time/s ... vmid&time=
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Re: Disturbed Weather in West Africa (Pouch 23L)

#55 Postby cycloneye » Sat Aug 17, 2013 6:55 am

It has been designated pouch 23L by the investigation group.

P23L
10N, 6W
700 hPa


ECMWF: Very distinct pouch for the first day while over west Africa. As P23L leaves Africa, it becomes elongated SW-NE in the monsoonal fashion, with the northeastern end eventually becoming the dominant portion and depicted as a distinct pouch again at 84 hours.

GFS: Distinct pouch the entire five days. Tracks a bit north of west, but not as much as ECMWF. GFS does not show as much SW-NE monsoonal elongation as in ECMWF; however, the pouch center is erratic on Days 4-5.

UKMET: Distinct, smooth track. Faster than EMCWF and GFS. Also gains latitude.

http://www.met.nps.edu/~mtmontgo/storms2013/P23L.html
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Re: Disturbed Weather in West Africa (Pouch 23L)

#56 Postby HurricaneDREW92 » Sat Aug 17, 2013 7:48 am

Wouldn't it be East Atlantic, now :wink:

CMC shows interesting scenario for this wave

Image

But then again, it's the CMC :D
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Re: Disturbed Weather in West Africa (Pouch 23L)

#57 Postby Gustywind » Sat Aug 17, 2013 7:52 am

HurricaneDREW92 wrote:Wouldn't it be East Atlantic, now :wink:

CMC shows interesting scenario for this wave

Image

But then again, it's the CMC :D

Yeah, surely an optimistic scenario on this run. Given its location much souther than the previous one, it's always suspcious. Plenty of time to watch it :), wait and see.
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Re: Disturbed Weather in West Africa (Pouch 23L)

#58 Postby Hurricaneman » Sat Aug 17, 2013 10:07 am

Gustywind wrote:
HurricaneDREW92 wrote:Wouldn't it be East Atlantic, now :wink:

CMC shows interesting scenario for this wave

http://imageshack.us/a/img15/2724/kth8.jpg

But then again, it's the CMC :D

Yeah, surely an optimistic scenario on this run. Given its location much souther than the previous one, it's always suspcious. Plenty of time to watch it :), wait and see.


The GFS has almost been just as robust so it does bear watching in the long run


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Re: Disturbed Weather in West Africa (Pouch 23L)

#59 Postby HurricaneDREW92 » Sat Aug 17, 2013 10:22 am

Hurricaneman wrote:
Gustywind wrote:
HurricaneDREW92 wrote:Wouldn't it be East Atlantic, now :wink:

CMC shows interesting scenario for this wave

http://imageshack.us/a/img15/2724/kth8.jpg

But then again, it's the CMC :D

Yeah, surely an optimistic scenario on this run. Given its location much souther than the previous one, it's always suspcious. Plenty of time to watch it :), wait and see.


The GFS has almost been just as robust so it does bear watching in the long run


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


Far too early out but this reminds me of Irene in 2011. The date And potential track. Disclaimer below.
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Re: Tropical Wave just off African Coast (Pouch 23L)

#60 Postby cycloneye » Sat Aug 17, 2013 4:02 pm

Introduced as a wave with low pressure (South of 10N) at 18z analysis.

Image
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