Hurricane Ike strengthened rapidly into an extremely dangerous category-four hurricane in the open Atlantic on Wednesday and Tropical Storm Hanna intensified to a lesser degree as it swirled over the Bahamas toward the south-east United States coast.
Ike posed no immediate threat to land but strengthened explosively, growing in the space of a few hours from a tropical storm to an intense category-four hurricane on the five-step Saffir-Simpson intensity scale.
Ike had top sustained winds of 215km/h as it swept across the open Atlantic 980km northeast of the Leeward Islands, the US National Hurricane Centre said. It was moving west-northwest at 28km/h.
It was forecast to strengthen further as it moves toward the southern Bahamas early next week but it was too early to tell whether it would threaten land, the forecasters said.
It was also too soon to say whether Ike would threaten US oil and natural gas producers in the Gulf of Mexico.
Hanna’s torrential rains had already submerged parts of Haiti, stranding residents on rooftops and prompting President Rene Preval to warn of an ”extraordinary catastrophe” to rival a storm that killed more than 3 000 people in the flood-prone Caribbean country four years ago.
Hanna was forecast to move over the central and northern Bahamas on Thursday, strengthening back into a hurricane with winds of at least 119km/h before hitting the US coast near the North Carolina-Virginia border on Saturday.
The government of the Bahamas had ended a hurricane warning for the north-western part of the islands, meaning a tropical storm warning was now in effect for all of the Bahamas and for the Turks and Caicos Islands, the hurricane centre said.
‘Tenacious cyclone’
Hanna has been a ”tenacious tropical cyclone” that is forecast to regain hurricane force in a day or two, but possibly sooner, the centre said. ”A hurricane watch may be required for a portion of the south-eastern US coast early Thursday,” it said.
Tropical Storm Josephine also marched across the Atlantic on a westward course behind Ike, but it had begun to weaken.
The burst of storm activity follows Hurricane Gustav, which slammed into Louisiana near New Orleans on Monday after a course that also took it through Haiti, where it killed more than 75 people.
The US government has forecast 14 to 18 tropical storms will form during the six-month season that began on June 1, more than the historical average of 10. Josephine was already the 10th of the year, forming before the statistical peak of the season on September 10.
The record-busting 2005 season, which included deadly Hurricane Katrina, had 28 storms.
In Haiti, officials were still counting the scores of people killed by Gustav when Hanna struck the impoverished nation on Monday night.
Authorities said Hanna caused flooding and mudslides that killed at least 61 people across Haiti, including 22 in the low-lying port of Gonaives. The death toll was expected to rise as floodwaters receded and rescuers reached remote areas.
”We are in a really catastrophic situation,” said Preval, who planned to hold emergency talks with representatives of international donor countries to appeal for aid.
”It is believed that compared to Jeanne, Hanna could cause even more damage,” he said, referring to a storm that sent floodwaters and mud cascading into Gonaives and other parts of Haiti’s north and north-west in September 2004, killing more than 3 000 people.
Gonaives residents were still stranded on their rooftops two days after the floodwaters rose and the government did not know the fate of those who had been in hospitals and prisons.
”There are a lot of people on rooftops and there are prisoners that we cannot guard,” Preval said.
Hanna had hovered off Haiti’s coast since Monday, drowning crops in a desperately poor nation already struggling with food shortages. It also triggered widespread flooding in the neighbouring Dominican Republic.
The Miami-based hurricane centre said it was too early to say where Ike might go, after it churns through the Caribbean, but the storm has drawn the attention of energy companies running the 4 000 offshore platforms in the Gulf of Mexico that provide the US with a quarter of its crude oil and 15% of its natural gas.
By late Wednesday, Josephine was swirling over the far eastern Atlantic about 6ookm west of the Cape Verde Islands. It was moving west but had begun to weaken, with top sustained winds dropping to 95km/h. — Reuters