Tropical Storm Harvey "intensified quickly" Thursday morning. : Tropical Storm Harvey is en route to becoming Texas' first full-fledged hurricane in nearly a decade, posing major flooding risks for cities as far inland as Houston while threatening the energy industry and oil production. The National Hurricane Center issued a warning Thursday morning that Harvey has "intensified quickly" and is expected to devolve into a hurricane by the time it makes landfall. The federal agency warns of surge flooding that could bring 12 to 20 inches of rain—and, in some instances, as much as 30 inches—to parts of the Texas coast.