Tropical Storm Irma expected to become hurricane, heading west over the Atlantic towards the Americas

EASTERN ATLANTIC OCEAN, Earth - August 31, 2017: Hurricane Irma photographed by the NASA MODIS satellite instruments Terra, Aqua and Suomi NPP in the central eastern Atlantic Ocean on August 31, 2017 (latest data available). Irma is now a Category 2 hurricane with sustained winds of up to 100mph. US scientists are predicting the hurricane could be a Category 4 (winds up to 130mph) by next Tuesday - Picture by Atlas Photo Archive/NASA