Storm Helene officially upgraded to hurricane as it heads straight for Florida

Hurricane Helene has been officially named with the storm strengthening as it heads across the Gulf of Mexico on a path to Florida with wind speeds of 80mph

People are being evacuated from areas of the United States as tropical storm Helene approaches and it has been upgraded to a hurricane.

It has rapidly strengthened in the Caribbean Sea as it moves north along Mexico's coast toward the US, leading residents to evacuate, schools to close, and officials to declare emergencies in Florida and Georgia.

The storm has reached hurricane strength passing near Mexico's Yucatan Peninsula on Wednesday, the US National Hurricane Center said. It intensified and grew in size as it crossed the Gulf of Mexico. Heavy rainfall was forecast for the southeastern US starting Wednesday, with a life-threatening storm surge along the entire west coast of Florida, according to the centre.

The storm is so large that rural areas roughly 90 miles north of the Georgia-Florida line are under a hurricane warning. And states as far inland as Tennessee, Kentucky and Indiana could see rainfall.

"You are going to have a major hurricane plowing inland, and storms take a little time to decay once they're inland," said Brian McNoldy, an environmental researcher at the University of Miami. Forecasters warned of possible tornadoes Wednesday night in western Florida and southern Alabama and said the tornado risk would increase Thursday, expanding across Florida and into Georgia and South Carolina.

Helene is expected to become a major hurricane - a Category 3 or higher, with winds above 110 mph - on Thursday, the day it's set to reach Florida's Gulf Coast, according to the hurricane centre. The centre has issued hurricane warnings for part of Mexico's Yucatan Peninsula and Florida's northwestern coastline, where large storm surges of up to 15 feet are expected.

Will Marx hunkered down in his double-wide mobile home 13 miles inland in Crawfordville, Florida. The 64-year-old retiree put extra jugs of water in his freezer as he watched people move boats and RVs out of the storm's projected path. "We will know tomorrow, I guess," he said. Mexico is still reeling from former Hurricane John battering its other coast. John hit the country's southern Pacific coast late Monday, killing two people, blowing tin roofs off houses, triggering mudslides and toppling scores of trees, officials said Tuesday.

John grew into a Category 3 hurricane in a matter of hours Monday and made landfall about 80 miles (128 kilometers) east of the resort city of Acapulco, near the town of Punta Maldonado, with maximum sustained winds of 120 mph (193 kph) before weakening to a tropical storm after moving inland.

Helene, which formed Tuesday in the Caribbean, is expected to move over deep, warm waters, fueling its intensification. On Wednesday morning, Helene was about 60 miles (100 kilometers) northeast of Cozumel, Mexico, and about 100 miles (160 kilometers) southwest of the western tip of Cuba as it moved northwest at 9 mph (15 kph) with maximum sustained winds of 70 mph (110 kph).

Mara Lezama, the governor of the coastal state of Quintana Roo, shared photos of rain-swept streets and videos of the normally placid, turquoise waters off the island of Cozumel being whipped into angry waves that broke over the seawall. In Cancun, heavy waves threatened to worsen the resort city's problem with beach erosion.

Tropical storm warnings were in effect for the upper Florida Keys, southern Florida and the northeast coast of Florida and were extended northward Wednesday morning to Altamaha Sound, Georgia. A tropical storm watch was in effect for the South Carolina coast north of the Savannah River to the South Santee River.

Hurricane watches, which are a step down from warnings, were also in effect for parts of western Cuba and Florida, including the Tampa Bay area, the hurricane center said.

Several counties on Florida's west and northwestern coasts have issued evacuation orders, and schools planned to close or reduce hours. Gas stations in the Tallahassee area started to run out of gas Monday, and water and other supplies flew from supermarket shelves.

President Joe Biden declared an emergency in Florida, and federal authorities postitioned generators, food and water, along with search-and-rescue and power restoration teams.

Florida Gov. Ron DeSantis, who already issued an emergency for most of the state's counties, said Wednesday that 12 health care facilities have evacuated. He urged people to prepare immediately.

Georgia Gov. Brian Kemp also declared an emergency in his state. The hurricane warning area included Valdosta, a city of 55,000. Helene approached barely a year after Hurricane Idalia inflicted more than $6 million in damage to 1,000 homes and other property.

In western Cuba, authorities moved cattle to higher ground and seven medical brigades were dispatched to communities usually cut off by storms. Helene was expected to dump heavy rain on the western part of an island already struggling with severe water shortages and chronic power outages.

The Cayman Islands were recovering after they were lashed Tuesday with heavy rains and big waves. The strong winds knocked out power in some areas, while heavy rain and waves as high as 10 feet (3 meters) unleashed flooding. Schools on the islands remained closed Wednesday as flood warnings continued and residents pumped water out of their flooded homes.

Helene is the eighth named storm of the Atlantic hurricane season, which began June 1. Since 2000, eight major hurricanes have made landfall in Florida, according to Philip Klotzbach, a Colorado State University hurricane researcher. The National Oceanic and Atmospheric Administration has predicted an above-average Atlantic hurricane season this year because of record-warm ocean temperatures.