It seems certain that Tropical Depression 9 will become TS Isaac as it bears down on the Windward Islands ... in fact, this could become a Hurricane as it passes through the Islands and churns into the Caribbean Sea.
The windfield is relatively small but the moisture covers an expansive area, particularly to the south and east of the centre.
There is alot of thunderstorm activity and if Isaac successfully wraps all this activity up then he will be a rather large storm.
It is not just the Islands north of Barbados that should watch this Storm ... Barbados, Grenada, Trinidad & Tobago and even parts of Venezuela should be prepared for significant rainfall from Wednesday for at least 48 hours.
Haiti is a particular worry further on ... Isaac is a very dangerous system.
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