The heavy rainfall poses a significant risk of flash flooding, particularly in low-lying areas, small streams, and urban locations prone to poor drainage. Drivers may encounter flooded roadways, water-covered underpasses, and reduced visibility during periods of intense rain. Residents in the affected areas should remain vigilant, as water levels can rise quickly in areas experiencing persistent downpours. The evening commute in Boston and Providence is expected to be particularly challenging due to the shifting flood risk.