If you are looking at the eastern Atlantic satellite
loops it is quite normal for large convective (rain storm) systems to roll off the west African coast day after day. Almost all of them either join in the ITCZ system or dissipate before getting past the Cape Verde's. What you are seeing is very typical of what you see this time of year and will increase in frequency in August and September.
- - If you look at series of satellite
loops across the tropical Atlantic you will see the location of the ITCZ clearly shown by the snaking line of rain storms stretching from Africa
to South America
or Trinidad/Grenada in the summer.
- - Only storm systems above 10 degrees north, this time of year, have the potential to develop into tropical storm systems and normally they do not even do that until they are about 30 degrees west.
- - So don't get your shorts in a bunch about what is rolling off Africa
until it gets to about halfway across the tropical Atlantic. Even if those storms that do persist they will most likely curve up the middle of the Atlantic quite a way east of the Caribbean
islands - unless - the mid-Atlantic High is blocking them, which is currently the forecast
situation for the next week to 10 days.