Active Weather Alerts
Flood Watch
Issued: 1:29 PM Aug. 21, 2026 – National Weather Service
...FLOOD WATCH IN EFFECT FROM LATE SATURDAY NIGHT THROUGH MONDAY AFTERNOON... * WHAT...Flash flooding caused by excessive rainfall is possible for windward and southeast Big Island. * WHERE...The Big Island. * WHEN...From late Saturday night through Monday afternoon. * IMPACTS...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. * ADDITIONAL DETAILS... - Tropical Depression Two-C is forecast to bring periods of heavy rain to the Big Island from late Saturday night through Monday afternoon. Rainfall totals of 5 to 10 inches, locally up to 15 inches, are possible on windward and southeast Big Island. It will not take a significant amount of rain to cause flash flooding due to saturated grounds from recent heavy rains. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. &&
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