Flash flooding caused by heavy rains has devastated the Northeast, with New Jersey and New York City bearing the brunt of the storm. At least two fatalities have been confirmed in New Jersey, where vehicles were swept away by surging waters, prompting a state of emergency declaration. The New York City subway system was severely impacted, with numerous stations flooded and passengers stranded. Authorities warn of continued rain and potential for further flooding, raising concerns over infrastructure vulnerability. Commuters faced delays and road closures as the region copes with the aftermath of the extreme weather event.