12:30 p.m. — Officials in the Florida Keys are gearing up to get tourists and residents out of the possible path of Hurricane Irma.
Monroe County spokeswoman Cammy Clark says in a news release that a mandatory evacuation for tourists will begin at sunrise Wednesday. An evacuation plan for residents is also under way but a timetable hasn’t been determined.
Clark says government offices, parks and schools will close and there will be no shelters in Monroe County. The county’s three hospitals are also beginning evacuation plans.
U.S. 1 is only route in and out of the island chain off the southern peninsula of Florida.
Clark says residents and tourists should begin filling their tanks with fuel to prepare to drive to the mainland.
12:10 p.m. — Florida Gov. Rick Scott is activating 100 members of the Florida National Guard to prepare for Hurricane Irma.
Scott says in a statement that the initial 100 troops will be stationed throughout the state. Some 7,000 National Guard members will report to duty Friday, when the storm could be bearing down on Florida.
Scott said Tuesday that the exact path of the storm is still unknown but officials “must prepare for the worst.”
On Monday he declared a state of emergency in all of Florida’s 67 counties.
Two hurricanes hit the state last year but neither was as powerful as Category 5 Irma is right now.
11:25 a.m. — Antigua’s airport has closed with an ominous statement from local authorities as Hurricane Irma approaches the Caribbean island.
The statement from the V.C. Bird International Airport says it is shutting down Tuesday and advises all visitors and residents of the two-island nation of Antigua and Barbuda to seek protection from the “onslaught” of the Category 5 storm.
It closes with: “May God protect us all.”
The center of the storm was expected to start passing north of Antigua and near or over Barbuda on Tuesday night.
11:05 a.m. — Tropical Storm Jose has formed in the open Atlantic far from land.
Jose is located to the east of Hurricane Irma, which is a powerful and dangerous storm heading toward Antigua and perhaps the U.S.
Jose is the 10th tropical storm of the season. It has maximum sustained winds of 40 mph (65 kph) and is about 1505 miles (2420 kilometers) east of the Lesser Antilles.
10:55 a.m. — The Dutch government says it is sending about 100 marines to the Caribbean island of St. Maarten to help prepare it and two other small islands for the arrival of Category 5 Hurricane Irma.
The government said Tuesday that the first marines were flown from the island of Aruba to St. Maarten in a coast guard plane. Some then traveled on to St. Eustatius and Saba.
Two Dutch navy ships based in the Caribbean also are sailing toward the islands to provide help assessing damage and repairing vital infrastructure after Irma has passed.
St. Maarten is an independent former Dutch colony that still relies on the Netherlands for defense and foreign relations issues. St. Eustatius and Saba are overseas municipalities of the Netherlands.
St. Maarten has a population of around 37,000, Saba has 2,000 residents and St. Eustatius has about 3,200.
10:45 a.m. — Puerto Rico Gov. Ricardo Rossello says he has spoken to White House Chief of Staff John Kelly as he seeks to have a state of emergency declared in the U.S. island territory due to Hurricane Irma.
Rossello thanks Kelly in a tweet for “the attention given to Puerto Rico” as the storm approaches.
Puerto Rico has announced a number of steps in preparation for the storm, including a 24-hour ban on the sale of alcohol starting 6 a.m. Wednesday.
The government has also dispatched inspectors to stores throughout the territory to check for possible price-gouging.
9:50 a.m. — The governor of the U.S. Virgin Islands says he has submitted an emergency declaration to the White House due to the approach of Hurricane Irma and is urging residents of the territory to take the storm seriously.
Gov. Kenneth Mapp says in a news briefing that he doesn’t want to frighten anyone but that forecasters predict the storm could skirt the territory or even pass directly over it.
Mapp says people in the islands may start to feel the storm’s effects around midmorning Wednesday.
8:35 a.m. — American Airlines has added extra flights out of two Caribbean islands to get people out of the path of Hurricane Irma, a powerful Category 5 storm.
The flights were added in St. Maarten and St. Kitts and Nevis. Those are in addition to regularly scheduled flights Tuesday and Wednesday to Miami.
Both islands are part of the northern Leeward Islands and are under a hurricane warning as Irma approaches the region Tuesday.
American says it expects to make additional flight changes as it monitors the storm.
8:00 A.M. — Hurricane Irma has strengthened into a Category 5 storm as it roared toward the northeast Caribbean on a path toward the U.S.
Irma’s maximum sustained winds increased to 175 mph early Tuesday. It was centered about 270 miles east of Antigua and moving west at 14 mph.
Authorities warned that the storm could dump up to 10 inches of rain, cause landslides and flash floods and generate waves of up to 23 feet. Government officials began evacuations in certain islands.
Puerto Rico Gov. Ricardo Rossello warned that all decisions taken in the next couple of hours would make a difference between life and death.
States of emergency were declared in Puerto Rico, the U.S. Virgin Islands and all of Florida.
SAN JUAN, Puerto Rico (AP) — Hurricane Irma has strengthened into a Category 4 storm as it approaches the northeast Caribbean.
The storm’s center is 490 miles east of the Leeward Islands late Monday afternoon. It has maximum sustained winds of 130 mph and is moving west at 13 mph.
Emergency officials are warning that Irma could dump up to 10 inches of rain, unleash landslides and dangerous flash floods and generate waves of up to 23 feet as the storm draws closer.
A hurricane warning has been issued for Antigua and Barbuda, Anguilla, Montserrat, St. Kitts and Nevis, St. Martin, Saba, St. Eustatius, St. Maarten and St. Barts.
A hurricane watch is in effect for Puerto Rico, Vieques, Culebra, the British and U.S. Virgin islands and Guadeloupe.