Tropical Storm Helene Advisory Number 3 NWS National Hurricane Center Miami FL AL082018 1100 PM AST Fri Sep 07 2018 …TROPICAL STORM HELENE FORMS BETWEEN THE COAST OF AFRICA AND THE CABO VERDE ISLANDS… …EXPECTED TO BRING TROPICAL STORM CONDITIONS TO PORTIONS OF THE CABO VERDE ISLANDS SATURDAY NIGHT AND SUNDAY. SUMMARY OF 1100 PM […]