More than 2.5 million people across the mid-Atlantic are still with out power from a massive storm on Friday, MSNBC said.
The unique storm, called a derecho, doesn't give much a warning, sending straight-lined winds over a large area, MSNBC said.
The area is also under a heat advisory and temperatures are expected to reach 104 degrees, MSNBC said.
President Obama has authorized FEMA to coordinate relief efforts, the Chicago Tribune said.
Ohio, Virginia and Maryland are calling the damage to their utilities "catastrophic," the Chicago Tribune said.