Well defined low level circulation with east atlantic wave

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cycloneye
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Well defined low level circulation with east atlantic wave

#1 Postby cycloneye » Fri Aug 20, 2004 6:33 am

TROPICAL WAVE CROSSING THE CAPE VERDE ISLANDS ALONG 24W S OF
19N MOVING W 10-15 KT...WITH A 1012 MB LOW ALONG THE AXIS NEAR
16N. SW IR IMAGERY SHOWS A WELL-DEVELOPED LOW-LEVEL CIRCULATION
CROSSING THE ISLANDS...WHICH IS CONFIRMED BY A 0718Z QSCAT PASS
SHOWING THE LOW IN THE CENTER OF THE ARCHIPELAGO. CONVECTION HAS
BEGUN TO DEVELOP TO THE SE WITH WIDELY SCATTERED MODERATE FROM
12N-16N BETWEEN 21W-23W

This discussion I found somewhat interesting because of those words about convection developing to the SE of the well defined low.But dont look to the south to that convection because it is ITCZ related however look more to the northeast when you see the pics and that low can be seen with the convection nearby.

Image
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#2 Postby Fego » Fri Aug 20, 2004 8:59 am

Hi Cycloneye... being an amateur, I don't understand the NHC explanation about de LLC at 24w. Are they pointing to the mass cloud over the CVI, because on the satellite map I see a TW but at 35w more or less...
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#3 Postby Fego » Fri Aug 20, 2004 9:01 am

BTW, hoy do I post a sat photo? I know I can post a link, but.. a sat post?
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#4 Postby x-y-no » Fri Aug 20, 2004 9:13 am

Fego wrote:Hi Cycloneye... being an amateur, I don't understand the NHC explanation about de LLC at 24w. Are they pointing to the mass cloud over the CVI, because on the satellite map I see a TW but at 35w more or less...


What you're seeing at 35w is convection in the ITCZ - not the wave. The LLC is right over the Cape Verde islands, and some associated convection is starting to appear to the SE of it.
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#5 Postby Nimbus » Fri Aug 20, 2004 10:00 am

You can see the low level scud closer to the CV islands, but we will have to wait for a convective burst before people start getting excited. Pretty far north anyways so probably a fish.
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#6 Postby Guest » Fri Aug 20, 2004 11:59 am

I was looking and I spotted it. Maybe this is something we have to watch, with JB saying the Newfoundland wheel is being established, but then again, it is Joe Bastardi....
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#7 Postby HurricaneQueen » Fri Aug 20, 2004 12:50 pm

I agree that it is too far north and will probably go swimming with the fish, if it develops.
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#8 Postby Steve H. » Fri Aug 20, 2004 5:15 pm

Come on people, there is an East/West ridge establishing itself across the Atlantic right now. If anything, the circulation near the CV will get shoved to the WSW. More evident is a large circulation over the west central African continent. This is definitely an impressive system, and will be the one to watch when it exits.
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#9 Postby ameriwx2003 » Fri Aug 20, 2004 5:17 pm

Steve.... agreed. that wave over the African continent is impressive.. It will be interesting to watch that wave near the Cape Verde Islands with the LLC but not much convection.. and see what it does as it moves further west:):)
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#10 Postby Derecho » Fri Aug 20, 2004 5:31 pm

Fego wrote:Hi Cycloneye... being an amateur, I don't understand the NHC explanation about de LLC at 24w. Are they pointing to the mass cloud over the CVI, because on the satellite map I see a TW but at 35w more or less...



IR Channel 4 (which is the pretty colored pics most people look at, and is what is posted in this thread) is basically useless for indentifying low-level circulations.

The circ TAFB is talking about is basically invisible on an IR Channel 4 still picture.

You need either vis pics, or IR channel 2 pics (which aren't quite as good as vis) in a loop, and unfortunately METEOSAT pics are not avaliable to the public in half-hourly pics.
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#11 Postby Rainband » Fri Aug 20, 2004 5:50 pm

I agree we need to watch it :eek:
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#12 Postby Brent » Fri Aug 20, 2004 5:53 pm

I'll be watching the wave about to exit Africa. WOWSER! :eek:
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#13 Postby Matthew5 » Fri Aug 20, 2004 5:57 pm

Convection is trying to fire over the system over the Cape verdes. It might try to brake away from the dry air. I would keep a slight eye on it as it moves off to the west(Might try to do what a depression did a few years ago. As for the wave coming off Africa, that looks very good at this time. It looks like it has a central core of convection with nice southern outflow developing. Quite a large area I would say. I'm going to say 60 percent of Frances out of this :)

In case your wondering what deperession I'm talking about here.
http://www.nhc.noaa.gov/2002seven.shtml
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#14 Postby Guest » Fri Aug 20, 2004 7:33 pm

agreed, the wave coming off africa is most impressive. i remember when the two waves that are now off of Africa looked impressive and I called those two and the one about to exit the triplets from hell. Looks like at least one of them ended up in heaven....
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#15 Postby Guest » Fri Aug 20, 2004 7:47 pm

Agree with Steve once the low starts moving west it should move WSW .
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