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HawaiiAlert.jp

Real-time disaster alerts in Hawaii — delivered automatically to LINE in Japanese

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What is HawaiiAlert.jp?

Real-time notifications

Real-Time Notifications

Automatically fetches official disaster alerts issued by the State of Hawaii and delivers real-time updates for your safety.

AI Japanese translation

AI-Powered Japanese Translation

Official English alerts are automatically summarized and translated into easy-to-read Japanese by AI (ChatGPT).

LINE integration

Receive on LINE

Get notifications directly on LINE — no need to install new apps. Just add the account to start receiving updates instantly.

About the Project

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.

How It Works (3 Steps)

1

Scan the QR Code

Open your smartphone camera and scan the QR code below.

2

Add on LINE

Add “HawaiiAlert.jp” as a friend on LINE.

3

Receive Notifications

When a disaster alert is issued, you’ll receive a Japanese-language notification on LINE.

Get Alerts via LINE

Scan the QR code below to add us on LINE.
Notifications include disaster alerts only — no ads or promotions.

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Latest Disaster Alerts

Alert Summary Issued Expires
Coastal Flood Statement
Location: Niihau; Kauai Southwest; Waianae Coast; Oahu North Shore; Olomana; Kahoolawe; Maui Windward West; Maui Leeward West; Kona; Kohala; Kauai North; Kauai East; Kauai South; East Honolulu; Honolulu Metro; Ewa Plain; Koolau Windward; Molokai Windward; Molokai Southeast; Molokai North; Molokai West; Molokai Leeward South; Lanai Windward; Lanai Leeward; Lanai South; Maui Central Valley North; Maui Central Valley South; Windward Haleakala; Kipahulu; South Maui/Upcountry; South Haleakala; Big Island South; Big Island Southeast; Big Island East; Big Island North
Severity: Minor
Description: The Coastal Flood Statement has been cancelled and is no longer in effect. 		Dec 7, 11:23 Dec 7, 11:38
Coastal Flood Statement
Location: Niihau; Kauai Southwest; Waianae Coast; Oahu North Shore; Olomana; Kahoolawe; Maui Windward West; Maui Leeward West; Kona; Kohala; Kauai North; Kauai East; Kauai South; East Honolulu; Honolulu Metro; Ewa Plain; Koolau Windward; Molokai Windward; Molokai Southeast; Molokai North; Molokai West; Molokai Leeward South; Lanai Windward; Lanai Leeward; Lanai South; Maui Central Valley North; Maui Central Valley South; Windward Haleakala; Kipahulu; South Maui/Upcountry; South Haleakala; Big Island South; Big Island Southeast; Big Island East; Big Island North
Severity: Minor
Description: ...MINOR COASTAL FLOODING FOR ALL LOW LYING AREAS DURING EARLY
MORNING HIGH TIDE TODAY...

Peak monthly high tides combined with water levels that are
running higher than predicted will lead to brief periods of minor
flooding along the shoreline and in low lying coastal areas
during the peak high tide this morning.

* WHAT...Isolated minor coastal flooding.

* WHERE...Vulnerable low-lying coastal roadways, docks, boat
ramps and other coastal infrastructure.

* WHEN...Until noon HST today.

* IMPACTS...Flooding of beaches that are normally dry, minor
coastal erosion, and saltwater inundation. 		Dec 7, 3:37 Dec 7, 12:00
Coastal Flood Statement
Location: Niihau; Kauai Southwest; Waianae Coast; Oahu North Shore; Olomana; Kahoolawe; Maui Windward West; Maui Leeward West; Kona; Kohala; Kauai North; Kauai East; Kauai South; East Honolulu; Honolulu Metro; Ewa Plain; Koolau Windward; Molokai Windward; Molokai Southeast; Molokai North; Molokai West; Molokai Leeward South; Lanai Windward; Lanai Leeward; Lanai South; Maui Central Valley North; Maui Central Valley South; Windward Haleakala; Kipahulu; South Maui/Upcountry; South Haleakala; Big Island South; Big Island Southeast; Big Island East; Big Island North
Severity: Minor
Description: ...MINOR COASTAL FLOODING FOR ALL LOW LYING COASTAL AREAS DURING
EARLY MORNING HIGH TIDE THROUGH SUNDAY...

Peak monthly high tides combined with water levels that are
running higher than predicted will lead to brief periods of minor
flooding along the shoreline and in low lying coastal areas during
the early morning peak high tide through Sunday.

* WHAT...Isolated minor coastal flooding.

* WHERE...Vulnerable low-lying coastal roadways, docks, boat
ramps and other coastal infrastructure.

* WHEN...Through Sunday morning.

* IMPACTS...Flooding of beaches that are normally dry, minor
coastal erosion, and saltwater inundation. 		Dec 6, 15:26 Dec 7, 4:30
High Surf Advisory
Location: Niihau; Kauai Southwest; Waianae Coast; Oahu North Shore; Maui Windward West; Kauai North; Molokai Windward; Molokai North; Molokai West; Maui Central Valley North; Windward Haleakala
Severity: Minor
Description: The High Surf Advisory has been cancelled and is no longer in effect. 		Dec 6, 3:34 Dec 6, 3:49
Coastal Flood Statement
Location: Niihau; Kauai Southwest; Waianae Coast; Oahu North Shore; Maui Windward West; Kauai North; Molokai Windward; Molokai North; Molokai West; Maui Central Valley North; Windward Haleakala
Severity: Minor
Description: ...MINOR COASTAL FLOODING NOW IN EFFECT THROUGH SUNDAY MORNING FOR
ALL LOW LYING COASTAL AREAS DURING EARLY MORNING HIGH TIDE...
...HIGH SURF ADVISORY IS CANCELLED FOR ALL ISLANDS...

.Moderate surf will will continue to impact north and west facing
shores of Niihau, Kauai, Oahu, and Molokai, and north facing
shores of Maui through Sunday. Surf heights have fallen just
below High Surf Advisory (HSA) thresholds today, and thus the HSA
was cancelled for all islands.

A combination of surf and peak monthly tides that are rising
higher than predicted will lead to brief periods of minor flooding
along the shoreline and in low lying coastal areas during the
early morning peak high tide through Sunday.

* WHAT...Isolated minor coastal flooding.

* WHERE...Vulnerable low-lying coastal roadways, docks, boat
ramps and other coastal infrastructure.

* WHEN...Through Sunday morning.

* IMPACTS...Flooding of beaches that are normally dry, minor
coastal erosion, and saltwater inundation. 		Dec 6, 3:34 Dec 6, 16:45

Frequently Asked Questions (FAQ)

Is the service free? ▼
Yes, HawaiiAlert.jp is completely free to use.
What kind of notifications will I receive? ▼
Only Japanese translations of official disaster alerts (tsunami, hurricane, flood, high surf, strong wind, wildfire) for Oʻahu are sent. No ads or unrelated notifications.
Which islands are covered? ▼
Currently, only alerts for the island of Oʻahu are delivered.
How often will I get alerts? ▼
You’ll only receive messages when an alert is officially issued. Some weeks may have multiple alerts, while others may have none.
Can I stop the notifications? ▼
Yes. You can stop notifications anytime by blocking or removing the account on LINE.
What are your data sources? ▼
Official alerts from PTWC (Pacific Tsunami Warning Center), NWS (National Weather Service), CPHC (Central Pacific Hurricane Center), and HI-EMA (Hawaii Emergency Management Agency).
Is the translation accurate? ▼
Alerts are summarized and translated by AI for clarity. While accuracy is prioritized, minor differences may occur — always confirm with official English sources when possible.
I’m not receiving any notifications ▼
Try blocking and re-adding the account on LINE. This usually resets the connection and restores delivery.
How do you handle privacy? ▼
We do not collect any personal information. Only your LINE account ID (anonymous) is used for notification delivery.
Is Japanese the only supported language? ▼
Currently, yes. English support is under development for future expansion.
How can I contact you? ▼
Please reach out via the Contact page on this website. Response times may vary depending on inquiries.

Message from the Developer

HawaiiAlert.jp was created to help Japanese visitors and students in Hawaii access accurate disaster information and take safe action during emergencies.

The system automatically retrieves official alerts issued by the State of Hawaii, summarizes them with AI, and delivers Japanese translations directly to LINE.

We hope this service helps more people stay safe and informed while in Hawaii.

Wishing you a safe and enjoyable stay in the islands.