On the topic of the new Atlantic wave...here is the 8:05 PM TWD take...

TROPICAL WAVE LOCATED ABOUT 100 NM W OF THE AFRICAN COAST ALONG
18W/19W S OF 19N MOVING W 5-10 KT. A 1008 MB LOW IS LOCATED
ALONG THE WAVE ABOUT 70 NM NW OF DAKAR NEAR 15N18.5W BASED ON
WIND AND PRES OBSERVATIONS FROM NEARBY SHIPS AND LAND STATIONS.
THE WAVE IS DEVELOPING A WELL-DEFINED SIGNATURE WITH MID-LEVEL
CLOUDINESS BEGINNING TO "SPILL OVER" THE WAVE AXIS FROM THE
E...AND CONVECTION BEING ORIENTED ALONG A LINE FROM S OF THE
CAPE VERDES NEWD INTO W/CNTRL MAURITANIA. SCATTERED
MODERATE/STRONG INLAND OVER WRN MAURITANIA AND SENEGAL FROM
13N-22N BETWEEN 11W-17W. OTHER DEEP CONVECTION IS FARTHER W
ALONG THE ITCZ. SHOWERS/TSTMS ARE EXPECTED TO MOVE OVER THE CAPE
VERDE ISLANDS ON FRI AND SAT AS THE WAVE PASSES BY.

Already shows an area of developing low pressure. I'd expect an invest on this wave, provided that it holds together well enough.