The most intense hurricane to hit Louisiana in more than a century has left at least six people dead, hundreds of thousands of people without power and an untold number of homes and buildings in ruins.

Laura, which was downgraded to a tropical storm Thursday after making landfall as a Category 4 hurricane with 150 mph winds, was expected to weaken to a tropical depression overnight as it moves across Arkansas, the National Hurricane Center said.

“It is clear that we did not sustain and suffer the absolute, catastrophic damage that we thought was likely based on the forecast we had last night,” Louisiana Gov. John Bel Edwards told reporters Thursday. “But we have sustained a tremendous amount of damage. We have thousands and thousands of our fellow citizens whose lives are upside down.”