text:  Hurricane Beryl has strengthened into an extremely dangerous Category 5 hurricane after devastating the Windward Islands in the Caribbean. Grenada's prime minister said the small island of Cariaco had been flattened by the immense storm. A quarter of Barbados residents were left without power. Meanwhile, at least two people were killed in St. Vincent and the Grenadines, where Prime Minister Ralph Gonsalves said 90% of the houses on Union Island were severely damaged or destroyed.