Another S. Atlantic Tropical System???

#1 Postby **hurricanemike** » Thu Mar 25, 2004 1:42 am

Zoom Sat Pic

GFS SLP/1000-500 THICKNESS

Hyperstorm · #2 Postby **Hyperstorm** » Thu Mar 25, 2004 9:25 am

I see....WOW! Things have been getting extremely interesting as of late in the South Atlantic. Are these signs of things to come in the near future? Who knows, maybe we'll have names for the South Atlantic tropical systems as well. I wouldn't be suprised if it's classified a tropical system at anytime. It reminds me of the situation with Ana, where the system came out of an extratropical low pressure system and gradually acquired tropical characteristics. I would bet all I have right now, that this is already subtropical. I say that because it separated from the frontal system and has a band of thunderstorms around the center. I wonder why the upper winds have not been playing a detrimental role this year in the South Atlantic...

Stormsfury · #3 Postby **Stormsfury** » Thu Mar 25, 2004 1:17 pm

Stormsfury · #4 Postby **Stormsfury** » Thu Mar 25, 2004 1:29 pm

What's even more amazing is that TC history tells us that these features are not supposed to occur in the South Atlantic Ocean, and before this year, only one had believed to occur in the South Atlantic back in April 1991 ...

Now we've had two suspect systems, and these both have congealed off the coast of South America just this year ... very odd, and very impressive ...

SF

#5 Postby **hurricanemike** » Thu Mar 25, 2004 3:30 pm

check this out...looks like an eye

Aqua/MODIS

mf_dolphin · #6 Postby **mf_dolphin** » Thu Mar 25, 2004 3:32 pm

I can't help it but these south of the equator systems are just plain backwards lol I know they spin the wrong way but it just looks funny :-)

weatherluvr · #7 Postby **weatherluvr** » Thu Mar 25, 2004 3:34 pm

Holy crap! What an awesome pic!

This is much more impressive looking than the other 2 documented systems from this region. Hopefully some official word will come out on this system soon.

#8 Postby **Hurricanehink** » Thu Mar 25, 2004 3:46 pm

Wow! Another South Atlantic Storm! IMO they should get names. Why is the South Atlantic the only place where cyclones "do not form"? They obviously do...

Anonymous · #9 Postby **Anonymous** » Thu Mar 25, 2004 4:16 pm

Umm, normally they don't hink lol...

#10 Postby **hurricanemike** » Thu Mar 25, 2004 4:53 pm

Hinker,

They hardly ever form there (S. Atlantic) because of unfavorable upper level winds. Thats why its not considered a basin.

weatherluvr · #11 Postby **weatherluvr** » Thu Mar 25, 2004 5:21 pm

It seems to be imbedded in a much larger cyclonic circulation, which may be shielding it from the upper-level shear. In fact, it seems somewhat reminiscent of the 1991 "Perfect" storm (after the center became warm-core), and Hurricane Karl in November 1980, which both formed under similar circumstances.

rainstorm · #12 Postby **rainstorm** » Thu Mar 25, 2004 6:27 pm

history in the making

#13 Postby **wxman57** » Thu Mar 25, 2004 8:38 pm

http://manati.wwb.noaa.gov/dataimages21 ... MBds28.png

The latest quickscat would suggest strongest winds are near the center (about 45 kts). Definitely not a true eye on satellite, just a circulation center.

Here's a bigger MODIS image:
http://rapidfire.sci.gsfc.nasa.gov/real ... 9.500m.jpg

ColdFront77 · #14 Postby **ColdFront77** » Thu Mar 25, 2004 9:44 pm

mf_dolphin wrote:I can't help it but these south of the equator systems are just plain backwards lol I know they spin the wrong way but it just looks funny

Spinning the wrong way? :lol:

mf_dolphin · #15 Postby **mf_dolphin** » Thu Mar 25, 2004 10:05 pm

low pressure systems south of the equator spin clockwise versus counter-clockwise north of the equator. As a "North American" they're backwards from what we're used to seeing :-)

ColdFront77 · #16 Postby **ColdFront77** » Thu Mar 25, 2004 10:24 pm

I am well aware of that, Marshall. "they spin the wrong way" struck me funny.

#17 Postby **wxman57** » Thu Mar 25, 2004 10:30 pm

Got a new image here, just a few minutes old.

<img src="http://myweb.cableone.net/nolasue/sastorm5.gif">

Typhoon_Willie · #18 Postby **Typhoon_Willie** » Thu Mar 25, 2004 10:30 pm

yeah it does look funny and this is incredible that we have our second system in the South Atlantic this year!

OtherHD · #19 Postby **OtherHD** » Thu Mar 25, 2004 10:33 pm

Wxman57, do you have access to any upper air data that will tell us if this is warm core or cold core? As weatherluvr said, it looks a bit like the unnamed hurricane of 1991, at least to me.

Stormsfury · #20 Postby **Stormsfury** » Fri Mar 26, 2004 12:58 am

IMHO, it's looking very subtropical ... but I don't have any soundings/datasets to support such a claim except for the many satellite views that are posted on this thread ...

When the security certificate pops up, just click on yes, and the 3 hour loop will pop up ... looks very much stationary ... (from around 9 pm to 12 Midnight) ... SST's in the region are running just marginal ... between 24ºC to 26ºC ... and the system is definitely in a very odd place ... located around 29ºS ...

Another S. Atlantic Tropical System???

Another S. Atlantic Tropical System???

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