Real-time disaster alerts in Hawaii — delivered automatically to LINE in Japanese
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Automatically fetches official disaster alerts issued by the State of Hawaii and delivers real-time updates for your safety.
Official English alerts are automatically summarized and translated into easy-to-read Japanese by AI (ChatGPT).
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HawaiiAlert.jp is a free service that automatically collects official disaster alerts in Hawaii — including tsunami, hurricane, flood, high surf, strong wind, and wildfire — and translates them into Japanese with AI. It's designed to help Japanese tourists, residents, and students stay safe and informed during emergencies.
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When a disaster alert is issued, you'll receive a Japanese-language notification on LINE.
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LINE notifications cover major warnings requiring protective action. Watches, advisories and routine time updates are not sent.
| Alert Summary | Issued | Expires |
|---|---|---|
| Ended Flood Watch Location (Oʻahu): Waianae Coast; Oahu North Shore; Olomana; Central Oahu; Waianae Mountains; East Honolulu; Honolulu Metro; Ewa Plain; Koolau Windward; Koolau Leeward Severity: Minor Description (excerpt): The Flood Watch has been cancelled and is no longer in effect. | Oct 8, 17:03 | Oct 8, 17:18 |
| Ended Flash Flood Warning Location (Oʻahu): Oahu Severity: Severe Description (excerpt): The heavy rain has ended. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. A Flood Watch remains in effect until 600 PM HST for Oahu. | Oct 8, 16:06 | Oct 8, 16:16 |
| Ended Flash Flood Warning Location (Oʻahu): Oahu Severity: Severe Description (excerpt): FFWHFO The National Weather Service in Honolulu has extended the * Flash Flood Warning for... The island of Oahu in Honolulu County * Until 415 PM HST. * At 110 PM HST, Moderate to locally heavy rain continues to develop and move over the island with the majority occurring over the western half of the island. Rain rates range from 0.5 to 2 inches per hour. Flash flooding is ongoing or expected to begin shortly. Additional showers with embedded heavier rain could develop to the south and move over the island for the next few hours, especially the western half. HAZARD...Flash flooding caused by heavy rain. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... the entire island of Oahu. | Oct 8, 13:10 | Oct 8, 16:15 |
| Ended Flood Advisory Location (Oʻahu): Oahu Severity: Minor Description (excerpt): The Flood Advisory has been cancelled and is no longer in effect. | Oct 8, 10:21 | Oct 8, 10:37 |
| Ended Flash Flood Warning Location (Oʻahu): Oahu Severity: Severe Description (excerpt): FFWHFO The National Weather Service in Honolulu has issued a * Flash Flood Warning for... The island of Oahu in Honolulu County * Until 115 PM HST. * At 1021 AM HST, emergency management reported water flowing over portions of Kamehameha Highway on the North Shore between Turtle Bay and Sharks's Cove, making passage through the area dangerous. Moderate to locally heavy rain continues to develop and move over the island with the majority occurring over the western half of the island. Rain rates range from 0.5 to 2 inches per hour. Flash flooding is ongoing or expected to begin shortly. Additional showers with embedded heavier rain are expected to move over the island for the next few hours, especially the western half. HAZARD...Flash flooding caused by heavy rain. SOURCE...Emergency management reported. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... the entire island of Oahu. | Oct 8, 10:21 | Oct 8, 13:15 |