Puerto Rico residents prepared their houses and stocked up on supplies, in San Juan, Tuesday, as the category 5 Hurricane Irma is poised to hit the northeastern Caribbean islands, threatening to churn into Puerto Rico, the Virgin Islands and Antigua by Wednesday. More than 450 shelters have been set up across Puerto Rico to accommodate up to 62,000 people. Local schools have been closed and a... Еще state of emergency has been declared. National Guard troops have also been mobilised. Earlier in the day, the Miami National Hurricane Centre reported that Irma could be «a potentially catastrophic category 5 hurricane,» while Antigua's meteorological office noted that the Irma «superstorm» was one of five other Atlantic hurricanes on record with winds reaching 180 miles per hour (290 kilometres per hour) or higher. Officials warn of «life-threatening» winds, rainfall and storm surges across the Caribbean islands, noting that Irma could be at least as strong as the category 4 Hurricane Harvey, which led to severe flooding in Houston last month. Puerto Rico is predicted to experience the worst effects of the storm. The storm is also feared to come dangerously close to Florida's southern coast by Sunday.