It's a probably still a bit early for a Cape Verde system to fully develop and / or make it all the way across, but it HAS been declared an Invest.
Also, from what Dr Jeff Masters said about SST's (Sea Surface Temperatures) in his blog yesterday, the waters where it is NOW are quite warm enough for development, but out in the middle of the Atlantic, they are a couple of degrees cooler.
Well, the NHC thinks enough of it to talk about it:
ZCZC MIATWOAT ALL
TTAA00 K
NHC DDHHMM
CCATROPICAL WEATHER OUTLOOK
...CORRECTED NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
800 PM EDT TUE JUL 1 2008
...CORRECTED TIME OF PRODUCT...FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO...
1. A STRONG TROPICAL WAVE IS LOCATED OVER THE EXTREME EASTERN ATLANTIC OCEAN ABOUT 150 MILES WEST OF THE WEST COAST OF AFRICA. THIS SYSTEM IS ACCOMPANIED BY A BROAD AREA OF SHOWERS AND THUNDERSTORMS AND A WEAK SURFACE LOW. SLOW DEVELOPMENT OF THIS SYSTEM IS POSSIBLE DURING THE NEXT COUPLE OF DAYS AS IT MOVES WESTWARD AT ABOUT 15 TO 20 MPH.
ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THENEXT 48 HOURS.
1. THE WELL-DEFINED TROPICAL WAVE IN THE FAR EASTERN ATLANTIC...ABOUT 300 MILES SOUTHEAST OF THE CAPE VERDE ISLANDS...HAS NOT BECOME ANY BETTER ORGANIZED THIS MORNING AS IT CONTINUES WESTWARD AT ABOUT 15 MPH. HOWEVER...ENVIRONMENTAL CONDITIONS APPEAR FAVORABLE FOR SOME ADDITIONAL DEVELOPMENT...AND THIS SYSTEM HAS THE POTENTIAL TO BECOME A TROPICAL DEPRESSION OVER THE NEXT COUPLE OF DAYS.