Active Weather Alerts
Flood Advisory
Issued: 9:03 AM Dec. 18, 2025 – National Weather Service
...FLOOD ADVISORY REMAINS IN EFFECT UNTIL 115 AM HST THURSDAY FOR THE ISLAND OF OAHU IN HONOLULU COUNTY... * WHAT...Flooding caused by excessive rainfall continues. * WHERE...The island of Oahu in Honolulu County. * WHEN...Until 115 AM HST. * IMPACTS...Minor flooding on roads, poor drainage areas, and in streams. * ADDITIONAL DETAILS... - At 1059 PM HST, radar and automated rain gauges continue to show heavy rain moving from the southwest to northeast over the entire island of Oahu. Rain was falling at a rate of 1 to 2 inches per hour with the heaviest showers over the western end of Oahu from Makakilo to Kahuku. - Some locations that will experience flooding include... the entire island of Oahu. PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay away from streams, drainage ditches and low lying areas prone to flooding. A Flood Watch is also in effect for Kauai and Oahu until 6 PM HST Thursday. && This advisory may need to be extended beyond 115 AM HST if flooding; persists.
Flood Watch
Issued: 1:45 AM Dec. 18, 2025 – National Weather Service
* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Kauai, Oahu, and Niihau. * WHEN...Through Thursday afternoon. * IMPACTS...Significant flooding may occur due to the overflow of streams and drainages. Roads in several areas may be closed, along with property damage in urban or low lying spots due to runoff. Landslides may also occur in areas with steep terrain. * ADDITIONAL DETAILS... - A weakening cold front stalling out near Kauai and Oahu will continue to produce southerly winds, drawing up additional unstable and deep tropical moisture across the western half of the state. Expect periods of moderate to locally heavy showers and isolated thunderstorms through Thursday with potential flooding impacts over the islands of Niihau, Kauai, and Oahu. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. &&
Small Craft Advisory
Issued: 1:14 AM Dec. 18, 2025 – National Weather Service
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM HST FRIDAY... * WHAT...Seas 7 to 10 feet. * WHERE...Kauai Northwest Waters, Kauai Windward Waters, Kauai Leeward Waters, Kauai Channel, Oahu Windward Waters, Oahu Leeward Waters and Kaiwi Channel. * WHEN...Until 6 AM HST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in these conditions. &&
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