This NOAA image obtained August 16, 2016, captured by the GOES-East satellite on the morning of August 15, 2016, shows a stalled front, stretching from the US Texas Coast to the Ohio Valley. According to NOAA's National Weather Service,a large amount of tropical moisture is expected to pool along the quasi-stationary front causing showers and thunderstorms to develop along and near the boundary through the evening of August 16 into August 17, 2016. As many as 30,000 people have been rescued following unprecedented floods in the southern US state of Louisiana, including a 78-year-old woman who spent a night stranded in a tree, police said late Monday. / AFP PHOTO / NOAA / Handout / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / NOAA" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS HANDOUT/AFP/Getty Images