Heartbreaking photos show Houston's devastating flooding from the sky

Harvey has pummeled Texas with rain since the storm made landfall on Friday, leaving Houston and other areas underwater.

By Tuesday, more than 49 inches of rain had fallen in parts of Houston. Tens of thousands of people have taken refuge in shelters while they wait for the floodwaters to recede. The coastal areas of Rockport and Port Aransas, which are close to where the storm made its first landfall, were heavily damaged; the second landfall caused dramatic flooding in Beaumont and Port Arthur as well.

The Associated Press flew over the Houston area Tuesday - here's what the destruction looked like from the air.