“Rescuers set out in hundreds of boats and helicopters to reach people trapped by floodwaters Monday, and utility repair crews rushed in, after a furious Hurricane Ida swamped the Louisiana coast and made a shambles of the electrical grid in the sticky, late-summer heat.” Hurricane Ida traps Louisianans, shatters the power grid. Here are photos, a video of a roof being torn off a hospital, and the latest from CNN.

+ Ida forced the Mississippi River to reverse flow.

+ One big part of the Ida story was how quickly it became dangerous. That speed makes evacuating impossible in some cases. Robinson Meyer in The Atlantic: We’re Hitting the Limits of Hurricane Preparedness.