After making landfall in the Florida Panhandle as a Category 2 hurricane, Isaias weakened considerably and headed north. Now, parts of the Southeast are at risk of flash floods.

© Zack Wittman for The New York Times

After making landfall in the Florida Panhandle as a Category 2 hurricane, Isaias weakened considerably and headed north. Now, parts of the Southeast are at risk of flash floods.

© Zack Wittman for The New York Times

Hundreds of thousands of people lost power, but towns near the landfall site in Florida were relieved that the hurricane damage was not worse.

© Zack Wittman for The New York Times

Ukraine showed European partners what it said were intercepted Russian plans to cut off major cities from power, heat and water this winter.