The factors Mann details include sea level rise (compounded by subsidence from oil drilling); warmer surface and deep waters in the Gulf which added to the energy/intensity of the storm, the storm surge it caused, and the amount of water it dumped on land; and the fact that it stalled over Texas, producing those all-time-record-breaking rainfall totals.
In the absence of meaningful action to control climate change, we're going to see a lot more of these "once-in-a-thousand-year" disasters.
|One of thousands of rescues in the aftermath|
of Hurricane/Tropical Storm Harvey
Credit: Dept. of Defense