Remnants of Hurricane Isaias continued to impact the southeastern United States on Sunday, leaving almost 396,000 customers in the Florida Panhandle and southern Alabama without electricity. The National Weather Service warns that moderate to heavy rainfall, now moving across the central Appalachians and mid-Atlantic region, poses a threat of isolated flash flooding and strong winds. These conditions could lead to further scattered power outages and downed trees. Dangerous surf and rip currents are expected to persist along the Gulf and southeastern Atlantic coasts. At least four deaths have been linked to the storm as it moved north. Authorities urge residents, particularly near the southern Appalachians, to remain vigilant.