New research from Wits University shows tropical storms are not becoming more frequent but they are moving south - resulting in increased rainfall.
The death toll from tropical storm Washi in the Phillipines is now said to have killed at least 436 people, many caught in their beds.
Tropical Storm Lee has made landfall in Louisiana, bringing with it torrential rains threatening floods in parts of the country.
The remnants of Tropical Storm Agatha dumped more rain across Central America on Sunday after killing at least 96 people in the region.
Hurricane Norbert weakened to a category-three storm early on Thursday on a path expected to take it to Mexico's southern Baja California peninsula.
Cuba raised its hurricane alert level to maximum on Monday for Havana as deadly Hurricane Ike raged westward across the island.
Barely a week after Hurricane Gustav devastated western Cuba, the island was battening down the hatches again on Sunday for another killer storm.
Hurricane Ike barrelled toward Cuba as an extremely dangerous category-four storm on Sunday.
Fierce Hurricane Ike weakens slightly as Tropical Storm Hanna buffets the Carolinas after killing at least 529 people in Haiti.
Corpses surfaced in the sodden Haitian city of Gonaives on Friday following Tropical Storm Hanna -- as fierce Hurricane Ike neared from the Atlantic.
Specially equipped C-130 Hurricane Hunters help forecasters know where tropical storms and hurricanes will go and when.
The solemn ceremonies for the third anniversary of Hurricane Katrina on Friday for the most part were blown away by Tropical Storm Gustav.
Tropical Storm Gustav was blamed on Thursday for at least 68 deaths in the Caribbean and forecasters said it could hit oil fields as a hurricane.
Tropical Storm Gustav took a turn on Thursday, moving south as it crept toward Jamaica on a new track that could spare New Orleans.
Tropical Storm Gustav stalled over Haiti on Wednesday, lashing the impoverished country with heavy rain and killing at least 13 people.
Tropical Storm Fay is predicted to strike Florida a second time, while Typhoon Nuri brings death and destruction to the Philippines.
Tropical Storm Fay, which killed at least 57 people in Caribbean countries over the weekend, moved slowly on Monday along Cuba's south-western coast.
Wind and rain buffet eastern Cuba as Tropical Storm Fay nears the island after killing at least five people in Haiti and the Dominican Republic.
The sixth tropical storm of the 2008 Atlantic hurricane season was heading for Haiti on Saturday where heavy rains could cause mudslides.
China evacuated nearly 400 000 people as its southern coast braced on Wednesday for an approaching tropical storm.