More than 230 people rescued as flash flooding hits Hawaii and fears dam could fail

Heavy rains have pummeled the Hawaiian island of Oahu and triggered the worst flooding the island has in 20 years

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Towering flash floods and an imminent dam failure in the northern part of Oahu triggered mass rescues and evacuation warnings in Hawaii on Friday, as the state continued contending with a powerful storm this week.

The waters came on quickly in the middle of the night, and videos on social media captured inundated streets and cars being swallowed by the muddy flood waters.