A tropical storm warning was issued Wednesday for parts of North Florida, from Mexico Beach to the Steinhatchee River, after Tropical Storm Mindy formed off the coast, the National Hurricane Center said. Mindy was expected to make landfall Wednesday night and cross the state before moving into the Atlantic Ocean on Thursday. At 5 p.m. Wednesday, Mindy was moving northeast near 21 mph with maximum sustained winds about 40 mph. “Little intensification is expected prior to landfall, with land interaction resulting in Mindy weakening back to a depression by 24 hours,” the center’s forecast said. Mindy is expected to produce heavy rain from the Panhandle into southern Georgia and South Carolina through Thursday morning. The rain could lead to scattered flooding, the forecast said.