Hurricane Irma continued to strengthen Tuesday as an "extremely dangerous" Category 5 storm, prompting states of emergency in Puerto Rico, the U.S. Virgin Islands and Florida, sending residents to stores to prepare for the worst.
Irma's maximum sustained winds had increased to near 180 mph, and the storm was located about 225 miles east of Antigua, moving west at 14 mph, the National Hurricane Center said in its 11 a.m. ET advisory.
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This Monday, Sept. 4, 2017, satellite image provided by the National Oceanic and Atmospheric Administration shows Hurricane Irma nearing the eastern Caribbean. (NOAA via AP)
"Some fluctuations in intensity are likely during the next day or two, but Irma is forecast to remain a powerful category 4 or 5 hurricane during the next couple of days," the NHC said.
Irma's center was expected to move near or over the northern Leeward Islands late Tuesday and early Wednesday before affecting Puerto Rico by Wednesday, the hurricane center said.
Fox News Senior Meterologist Janice Dean said Irma is now "one of the strongest hurricanes we have witnessed in the last decade."
Outside of the Caribbean and Gulf of Mexico, the NHC said Irma is the strongest hurricane in history in the Atlantic basin according to agency records.
Hurricane warnings were issued for 12 island groups in the Caribbean, including the British Virgin Islands, where the governor urged those who could to evacuate the tiny island of Anegada ahead of the storm.
TRACK HURRICANE IRMA AT MYFOXHURRICANE.COM
The forecast for Irma remains ticky for over the weekend as it approaches South Florida by Saturday night into Sunday, as the storm is expected to make a sharp turn to the north as a trough moves into the region, according to Dean.
"Florida and the Southeast U.S. should be paying close attention to the forecast and any changes over the coming days, while South Florida and the Florida Keys should be preparing for potential impacts from a dangerous Category 4 hurricane this weekend."
– Janice Dean, Fox News Senior Meteorologist
"Florida and the Southeast U.S. should be paying close attention to the forecast and any changes over the coming days, while South Florida and the Florida Keys should be preparing for potential impacts from a dangerous Category 4 hurricane this weekend," she said.
Puerto Rico Gov. Ricardo Rossello warned that all decisions taken in the next couple of hours would make a difference between life and death.
Authorities warned the storm could dump up to 10 inches of rain on parts of the Caribbean, cause landslides and dangerous flash floods and generate waves of up to 23 feet.
"This is not an opportunity to go outside and try to have fun with a hurricane," U.S. Virgin Islands Gov. Kenneth Mapp warned. "It's not time to get on a surfboard."
While Irma's potential impact on the U.S. mainland is not yet fully known, Florida Gov. Rick Scott declared a state of emergency Monday to ensure "local governments have ample time, resources and flexibility to get prepared for this dangerous storm."
"In Florida, we always prepare for the worst and hope for the best and while the exact path of Irma is not absolutely known at this time, we cannot afford to not be prepared," Scott said in a statement.
FLORIDA GOV. RICK SCOTT DECLARES STATE OF EMERGENCY AHEAD OF HURRICANE IRMA
Some residents across South Florida spent Labor Day stocking up on supplies in case Irma nears, instead of buying items for barbecues.
“Obviously, get ready ahead of time. We have food, as you can see," shopper Jacqueline Kimbrough told WSVN of her preparations. "We have our music. We just have a good time. We don’t worry about it and we pray."
Some supermarkets reported being out of water as of late Monday, WSVN reported.
At a Home Depot in Hollywood, Fla., shoppers stocked up on hardware and supplies such as batteries and flashlights.
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Some supermarkets in the Tampa Bay area ran low on water Monday. (FOX 13 Tampa)
“Better to be safe than sorry,” shopper Jeff Davis told WSVN. “It could potentially be a Category 4 or 5, and I can’t prepare Thursday or Friday, so now’s the day to do it.”
Further north on Florida's Gulf Coast, residents weren't taking any chances, and spent Monday making sure their disaster kits are ready for whatever the storm brings.
"Definitely better now than when it's too late," Chance Burnett told FOX 13 Tampa as he loaded cases of water bottles into his trunk.
"We've got a lot of cases of water and a lot of canned foods, tuna, Chef Boyardees," said Burnett. "And then, we are on our way to Home Depot and we are going to stock up on flashlights and batteries."
At Home Depot in Tampa, tarps, gas containers and generators were among the most popular items being bought by shoppers. The generator shelves were restocked on Monday morning, but were already sold out by the afternoon
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Some residents across Florida spent their Labor Day getting supplies in case Hurricane Irma nears. (FOX 13 Tampa)
Assistant store manager Chrissy Lenze told FOX 13 the store expects a new shipment this week, and they have plenty of other supplies.
"Mostly plywood, water, flashlights, tarps for afterwards, sandbags to prepare," Lenze said. "We want to be the last ones to close, first ones to open during a storm."
On Puerto Rico, which will feel Irma's effects by Wednesday, residents braced for electricity outages after the director of the island's power company said that storm damage could leave some areas without electricity for four to six months.
Ricardo Ramos told radio station Notiuno 630 AM "some areas will have power [back] in less than a week." The utility's infrastructure has deteriorated greatly during a decade-long recession, and Puerto Ricans experienced an island-wide outage last year.
Both Puerto Rico and the U.S. Virgin Islands expected 4 inches to 8 inches of rain and winds of 40-50 mph with gusts of up to 60 mph.
The last Category 5 storm to hit the United States was Hurricane Andrew in 1992. An estimated 250,000 were left homeless and the storm caused more than $20 billion in damage in the Bahamas, Florida and Louisiana. Fifty-five people were killed.
The Associated Press contributed to this report.