Active Weather Alerts
Flood Advisory
Issued: 5:09 PM Sep. 17, 2026 – National Weather Service
...FLOOD ADVISORY WILL EXPIRE AT 715 AM HST THIS MORNING... Weather radar shows that the heavy rain has diminished. Therefore, the Flood Advisory will be allowed to expire at 715 AM. Flooding is no longer expected to pose a threat. &&
Small Craft Advisory
Issued: 1:21 PM Sep. 17, 2026 – National Weather Service
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM HST SATURDAY... * WHAT...East winds 10 to 20 kt with gusts up to 30 kt and seas 4 to 6 feet expected. * WHERE...Big Island Windward Waters. * WHEN...Until 6 AM HST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in these conditions. &&
Flood Watch
Issued: 1:15 PM Sep. 17, 2026 – National Weather Service
...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...All main Hawaiian Islands. * WHEN...Through late tonight. * 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... - A band of remnant moisture from Norbert will move west across the islands through Friday, bringing moderate to locally heavy showers to mainly windward sides of the islands. There is a slight chance of thunderstorms as well, which could produce briefly higher rain rates, increasing the risk of flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. &&
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