Active Weather Alerts
Special Marine Warning
Issued: 1:36 AM Mar. 24, 2026 – National Weather Service
The National Weather Service in Honolulu has issued a * Special Marine Warning for... Big Island Southeast Waters... Big Island Windward Waters... * Until 500 PM HST. * At 336 PM HST, a severe thunderstorm capable of producing waterspouts was located near FAD Buoy RN, or 8 nm east of Pahala, moving east at 5 knots. HAZARD...Waterspouts and wind gusts to 40 knots. SOURCE...Radar. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... FAD Buoy KH, FAD Buoy RN, and FAD Buoy SS. PRECAUTIONARY/PREPAREDNESS ACTIONS... Prepare for gusty winds, steep and fast-building seas, and blinding downpours. Stay low or go below, and make sure all on board are wearing life jackets. Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately. Frequent lightning is occurring with this storm. If caught on the open water, stay below deck if possible. && WATERSPOUT...POSSIBLE; HAIL...0.00IN; WIND...40KTS
Small Craft Advisory
Issued: 1:31 AM Mar. 24, 2026 – National Weather Service
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM HST WEDNESDAY... * WHAT...Northeast winds 15 to 25 kt. * WHERE...Kauai Northwest Waters, Kauai Windward Waters, Kauai Leeward Waters, Kauai Channel, Oahu Windward Waters, Oahu Leeward Waters, Kaiwi Channel, Maui County Windward Waters, Maui County Leeward Waters, Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Windward Waters, Big Island Leeward Waters and Big Island Southeast Waters. * WHEN...Until 6 AM HST Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in these conditions. &&
Flash Flood Warning
Issued: 1:28 AM Mar. 24, 2026 – National Weather Service
The National Weather Service in Honolulu has extended the * Flash Flood Warning for... The island of Hawaii in Hawaii County * Until 645 PM HST. * At 328 PM HST, radar indicated areas of heavy rain continuing over portions of east and southeast Big Island. The heaviest rain is concentrated over the Kau District between Kawa Flats and Volcano, including portions of Mamalahoa Highway. Rain was falling at a rate of 2 to 4 inches per hour. The water level at the Paauau Gulch gage near Pahala continues to run high. Emergency management reports water over Mamalahoa Highway at that location. HAZARD...Heavy rain producing life threatening flash flooding. SOURCE...Emergency management. IMPACT...Significant and life threatening flooding in drainages, streams, rivers, roads, properties, and other low lying areas. Multiple public road closures expected, as well as landslides in steep terrain. * Some locations that will experience flash flooding include... Hilo, Hawaiian Paradise Park, Honokaa, Volcano, Glenwood, Mountain View, Hawaii Volcanoes National Park, Hawaiian Acres, Keaau, Wood Valley, Pohakuloa Camp, Papaikou, Pepeekeo, Pahala, Honomu, Pahoa and Hakalau. PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay away from streams, rivers, drainage ditches, and culverts, even if they are currently dry. Excessive runoff from heavy rainfall will cause flooding of drainage ditches and streams, streets, highways, properties, and other low lying spots. && This warning may need to be extended beyond 645 PM HST if flooding; persists.; FLASH FLOOD...OBSERVED; FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
Flood Watch
Issued: 1:02 AM Mar. 24, 2026 – National Weather Service
* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...The Big Island. * WHEN...Through late tonight. * IMPACTS...Flood prone roads and other low lying areas may be closed due to elevated runoff and overflowing streams due to excessive rain over saturated ground. Urban areas may receive more significant flooding and property damage due to rapid runoff. * ADDITIONAL DETAILS... - Unstable tropical moisture left from the departing kona low and troughing aloft will bring possible heavy rain and thunderstorms tonight. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. &&
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