News

Flash Flood Watch in Effect Island-wide

December 21, 2021, 12:45 PM HST
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A flash flood watch is currently in effect island-wide through late tonight, according to the National Weather Service in Honolulu this afternoon.

Recent rainfall has produced nearly saturated conditions, especially over the windward slopes of the Big Island. A passing upper disturbance is expected to produce additional heavy showers and thunderstorms that could lead to flash flooding this afternoon and tonight. The highest flood risk will be across windward slopes, though heavy rainfall could affect the entire island.

Flood-prone roads and other low-lying areas may be closed due to elevated runoff and overflowing streams. Urban areas may receive more significant flooding and property damage due to rapid runoff.

You should monitor later forecasts and be prepared to take action should flash flood warnings be issued.

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