04 September 2009

Erika dissipates, new easterly wave developing...

Earlier today, NHC wrote their final advisory on Erika, which was downgraded to a Tropical Depression on Thursday.  In the face of strong mid-level wind shear, the low-level circulation was completely removed from the mid- and upper- level circulation and convection.  The remnant circulation is now south of Puerto Rico and will we monitored for any signs of redevelopment.

Elsewhere, a potent easterly wave is located just south of the Cape Verde islands and tracking W at 18kts.  There is a 1012mb Low associated with the wave.  On satellite imagery, it has an impressive presentation, both in the low-level circulation and attendant convection.
However, most computer models do not develop THIS wave, but rather the one behind it, currently over western Africa.

Please visit my tropical Atlantic headquarters.

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