One of the most powerful Atlantic hurricanes in recent years is expected to cause flooding and landslides when it passes by Jamaica and Haiti. The fast-approaching Matthew, a Category Four storm, could bring up to 102cm of rain. Heavy rain and winds have already hit parts of Jamaica, with floodwaters blocking roads in the capital Kingston. <br/><br/>Haiti could be more seriously affected when the hurricane passes over the country's south-west later today. The Haitian authorities have urged people to stock food and water and secure their homes. Thousands are still living in tents following the huge earthquake in 2010. Matthew is later expected to reach eastern Cuba.