Hundreds of thousands of people in the US states of Louisiana and Mississippi are still without power, gas and drinking water. Hurricane Ida slammed into the coast on Sunday, killing at least six people.
Residents are unsure about when electricity will be restored. Many need gas to power their generators. But they have run into long lines at gas stations.
Crews had to rescue hundreds of people. They have to wait for floodwaters to recede before they can bring in food, water and other supplies.
Forecasters have issued a heat advisory and expect the heat index to reach over 40 degrees Celsius. Officials in New Orleans have set up cooling centers.
Many residents recall the devastation of Hurricane Katrina 16 years ago. Some neighborhoods took years to recover.