Tens of millions of people are at risk of dangerous flash floods in pockets of nearly every region of the contiguous United States Friday, as the nation’s summer of flooding continues.

Relentless rain began on Wednesday, causing flooding in several cities and across vast rural stretches in the province of Punjab.

The Kansas City metro remains under a flash flood warning through 1 p.m. Thursday following overnight thunderstorms that brought a record-breaking downpour.