 Images posted on social media from Grenada's Carriacou Island show homes with their roofs blown off, debris spread across the streets and residents picking through the rubble to salvage their possessions. In half an hour, Carriacou was flattened, said Grenada's Prime Minister, Dickon Mitchell. As communications return, a full picture of the extent of the damage across Grenada, St Vincent and the Grenadines and St Lucia will become clearer to the authorities.