Hurricane Laura
© YouTube/CNBC (screen capture)
Laura has strengthened into a category 3 hurricane and is expected to strengthen to category 4 later on Wednesday, the U.S. National Hurricane Center said. More than half a million people were ordered to flee the Gulf Coast on Tuesday as Laura strengthened into a hurricane that forecasters said could slam Texas and Louisiana with ferocious winds, heavy flooding and the power to push seawater miles inland.