Eastern Caribbean south of DR
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AJC3
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Re: Eastern Caribbean south of DR
Just an FYI, peeps...Not every convective blowup in the tropics is a "wave". Before you start calling an area of disturbed weather a "wave", or title a thread as such, make sure that it's actually the case. Check the latest TWDAT to find the position of the tropical waves placed by TAFB.
In this case, this was simply a massive area of convection that erupted from strong upper level forcing in an area of highly divergent flow aloft just to the east of a sharp TUTT axis. There never was, nor is there now, a "tropical wave" associated with the earlier blowup around 70W. African easterly waves (AEW), commonly referred to as "tropical waves", are generally spaced pretty regularly, and their westward progress through the MDR is easily trackable, using satellite imagery, reading the TWDs, MIMIC, CIMSS WAVETRAK, etc.
As such, the thread title (and a few of the posts) have been edited to reflect this.
In this case, this was simply a massive area of convection that erupted from strong upper level forcing in an area of highly divergent flow aloft just to the east of a sharp TUTT axis. There never was, nor is there now, a "tropical wave" associated with the earlier blowup around 70W. African easterly waves (AEW), commonly referred to as "tropical waves", are generally spaced pretty regularly, and their westward progress through the MDR is easily trackable, using satellite imagery, reading the TWDs, MIMIC, CIMSS WAVETRAK, etc.
As such, the thread title (and a few of the posts) have been edited to reflect this.
7 likes
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floridasun78
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Re: Eastern Caribbean south of DR
Upper level low chewing its way down into Jamaica is shearing this area, but as noted further back under the anticyclone there is some wave energy in a lower shear environment. Nice quiet early September.
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Emmett_Brown
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Re: Eastern Caribbean south of DR
AJC3 wrote:Just an FYI, peeps...Not every convective blowup in the tropics is a "wave". Before you start calling an area of disturbed weather a "wave", or title a thread as such, make sure that it's actually the case. Check the latest TWDAT to find the position of the tropical waves placed by TAFB.
In this case, this was simply a massive area of convection that erupted from strong upper level forcing in an area of highly divergent flow aloft just to the east of a sharp TUTT axis. There never was, nor is there now, a "tropical wave" associated with the earlier blowup around 70W. African easterly waves (AEW), commonly referred to as "tropical waves", are generally spaced pretty regularly, and their westward progress through the MDR is easily trackable, using satellite imagery, reading the TWDs, MIMIC, CIMSS WAVETRAK, etc.
As such, the thread title (and a few of the posts) have been edited to reflect this.
Great point, thanks for clearing that up. Here is a great old school chart to view tropical waves: https://www.nhc.noaa.gov/tafb_latest/USA_latest.gif
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