Flash flood warnings are issued for parts of New York City and the Northeast as multiple rounds of storms move through the region. Several outlets report Monday warnings affecting areas across New York, including New York City, and parts of the broader tri-state area, with Philadelphia and New Jersey also mentioned. The warnings come as heavy rain and flooding begin to break a heat wave that recently gripped New York City and much of the Northeast. The heat wave had brought sustained high temperatures during the preceding week, and the shift in weather is accompanied by storm activity capable of producing flooding on short notice. Reports indicate that the threat is driven by periods of intense rainfall, which increase the risk of flash flooding in affected locations. While the warnings are tied to the passage of storms, outlets do not provide specific rainfall totals, emergency actions, or damage assessments in the provided summaries. Overall, the coverage focuses on the combination of changing conditions—heat easing—and the issuance of flash flood alerts due to incoming rain and flooding.