31. The first was a tropical wave that existed over the Caribbean Sea from September 23 26. 32. Andrew originated from a tropical wave over the central frontal system over the southern Appalachian Mountains. 33. Floyd formed earlier this week off Africa's Cape Verdi Islands as a typical September tropical wave . 34. Central Africa will continue to experience showers and thunderstorms as tropical waves move across the continent. 35. Hurricane Irene formed from a tropical wave on August 21, 2011 in the tropical Atlantic Ocean. 36. Early on the following day, Joyce degenerated into a tropical wave over the southeast Caribbean Sea. 37. At this time there is a tropical wave about 200 miles east of the Lesser Antilles. 38. Do you mind clarifying " A tropical wave exited the coast of Africa on September 26. 39. The season produced 13 Hurricane Kay, all of the storms of the season originated from tropical waves . 40. A tropical wave formed on February 10.