KINGSTON, Jamaica &#8212 Jamaicans headed inland and tourists fled the country as Hurricane Dean headed for a direct hit on the island Sunday after a deadly and destructive march across the eastern Caribbean. Coastal Texas and Mexico began evacuations, with many Texans hoping to avoid the disastrous last-minute exodus before Hurricane Rita in 2005.

Jamaica converted schools, churches and the indoor national sports arena into shelters and authorities urged people to take cover from a storm that could rake the country with winds of 145 mph and dump up to 20 inches of rain.

“It’s going to be very, very serious,” said Lawrence Samuel as he shopped for emergency groceries while his wife and son went to the hardware store for plywood and other supplies.

The National Hurricane Center in Miami said the first hurricane of the Atlantic season was projected to reach the most dangerous hurricane classification, Category 5, with winds of 160 mph before crashing into the Mexican coastline near Cancun on Monday night or Tuesday.

In the Texas coastal city of Galveston, residents remembered the 2005 Hurricane Rita evacuation, when motorists from the coast ran into residents fleeing Houston, clogging evacuation routes for miles in sweltering heat. State officials say they’ve worked out the kinks in the system, but many Galveston residents were skeptical.

“I’ve talked to a lot of people about this,” said Chuck Lee, a resident. “They’d rather die in their homes than die in their cars on some highway.”

On Saturday, lighted signs along the highways usually reserved for Amber Alerts flashed an ominous message: “HURRICANE FORMING NEAR GULF. KEEP YOUR GAS TANKS FULL.”

Playing it safe, NASA shortened the last spacewalk for astronauts aboard the shuttle Endeavour and ordered the spacecraft to return to Earth on Tuesday – a day early – fearing the storm might threaten the Houston home of Mission Control.

Jamaican Prime Minister Portia Simpson Miller said late Saturday the country was confronting a national emergency and urged people in flood-prone areas to head for shelter.

“Do not wait for the last minute to make the decision to move from where you are,” Simpson Miller said. “Decide now and begin to make arrangements to leave now.”

Thousands of alarmed tourists were not waiting. They jammed Caribbean airports for flights out of Hurricane Dean’s path as the fierce storm that has claimed at least seven lives.

Jamaican officials closed the airports late Saturday ordered all businesses shuttered until Tuesday to prevent the looting that occurred during Hurricane Ivan in 2004.

The first hurricane of the Atlantic season rolled through the Caribbean to the south of Hispaniola, the island shared by Haiti and the Dominican Republic, where heavy rain and surging seas caused flooding Saturday in coastal areas.

The storm’s wrath could be felt Saturday in Santo Domingo, the capital of the Dominican Republic, where a boy was pulled into the ocean and drowned while watching waves strike an oceanfront boulevard, the Dominican emergency operations center reported. Rough surf churned by Dean destroyed five houses and damaged 15 others along the coast, emergency officials said.

People jammed supermarkets and hardware stores in Kingston to stock up on canned food, bottled water, flashlights, batteries, lamps and plywood. In malls in the Jamaican capital, storeowners hammered plywood over windows.

Elaine Russell recalled Ivan’s destruction three years ago.

“I can’t take it,” she said. “The storm is bad enough but it’s what happens afterwards – there’s no light, no water.”

Farther west, the low-lying Cayman Islands were expected to take a direct hit on Monday. Tourists there jammed Owens International Airport in snaking lines that stretched outside onto a lawn. A police officer with a bullhorn kept order.

The government ordered a mandatory evacuation of Little Cayman by noon Sunday, which is the smallest of the territory’s three islands and has a population of about 150.

Authorities in the eastern Caribbean were assessing the damage after Dean hit on Friday as a Category 2 storm with winds near 100 mph.

At 11 a.m. EDT the center of the storm was about 130 miles east-southeast of Kingston and expected to be very near Jamaica later in the day, with maximum sustained winds near 145 mph.