The National Weather Service has issued a Flash Flood Watch for the Big Island through tonight.
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.
Recent rainfall has produced nearly saturated conditions, especially over 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 effect the entire island.
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.