While the weather has largely been sunny, warm and humid across flood-ravaged portions of North and South Carolina, an incoming round of tropical downpours could exacerbate flooding and delay cleanup efforts.
While crests will continue to work downstream along the major rivers in the eastern part of the Carolinas into next week, some unprotected areas may stay flooded until the end of September or early October.
The Carolinas continue to deal with Florence's aftermath while flooding inundated other parts of the U.S. this week.
A round of severe weather will threaten communities across part of the interior Northeast with damaging winds and downpours into Friday evening.
Advances in weather science and technology and cooperation between government weather services and the American Weather Industry, have resulted in increasingly accurate tornado warnings. This has led to greatly reduced risk for such tragedies when warnings provide enough time to move people to safety when severe weather threatens.
Ahead of a sweep of October-like air, damaging thunderstorms, including the risk of tornadoes, will march across the midwestern United States into Thursday night.
About 3.4 million chickens and turkeys and 5,500 hogs have been killed in floodwaters from Florence in North Carolina. Health and environmental concerns have been raised as flooded power plants, industrial sites, and animal-manure lagoons may leak toxic waste into drinking water.
The northeastern United States will be in the middle of an atmospheric battle zone into the end of September as waves of cool air begin to push out of Canada and tropical air fights back.