日本語 | English

HawaiiAlert.jp

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

Add on LINE for Free

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.

LINE QR Code
Add on LINE

Latest Disaster Alerts

Alert Summary Issued Expires
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Description: The High Surf Advisory has been cancelled and is no longer in effect. 		Jan 28, 11:21 Jan 28, 11:37
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: ...HIGH SURF ADVISORY FOR NORTH AND WEST FACING SHORES OF NIIHAU
KAUAI OAHU AND MOLOKAI AND NORTH FACING SHORES OF MAUI...

.Surf along exposed north- and west-facing shores will remain
around the advisory levels through the early morning hours today,
then gradually lower by this afternoon.

* WHAT...Surf of 10 to 15 feet along north facing shores. Surf of
8 to 12 feet along west facing shores.

* WHERE...North and west facing shores of Niihau, Kauai, Oahu, and
Molokai, and north facing shores of Maui.

* WHEN...Until noon HST today.

* IMPACTS...Moderate. Strong breaking waves and strong currents
will make swimming dangerous. 		Jan 28, 3:55 Jan 28, 12:00
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: ...HIGH SURF ADVISORY FOR NORTH AND WEST FACING SHORES OF NIIHAU
KAUAI OAHU AND MOLOKAI...
...HIGH SURF ADVISORY FOR NORTH FACING SHORES OF MAUI...

.Afternoon buoy observations from NW Hawaii offshore buoy 51001
suggest that an incoming north northwest (330-340 degree) swell
will likely result in advisory-level surf along exposed north and
west facing shores as it moves into the islands. This swell is
expected to peak during the overnight hours, then will gradually
decline on Wednesday.

* WHAT...Surf heights of up to 12 to 16 feet along north facing
shores of Niihau, Kauai, Oahu, and Molokai. Surf heights of up
to 10 to 15 feet along north facing shores of Maui. Surf heights
of up to 8 to 12 feet along exposed west facing shores.

* WHERE...North and west facing shores of Niihau, Kauai, Oahu, and
Molokai, and north facing shores of Maui.

* WHEN...Until 6 AM HST Wednesday.

* IMPACTS...Moderate. Strong breaking waves and strong currents
will make swimming dangerous. 		Jan 27, 15:05 Jan 28, 4:15
High Surf Advisory
Location: Niihau; Kauai Southwest; Waianae Coast; Oahu North Shore; Kauai North
Severity: Minor
Description: The High Surf Advisory has been cancelled and is no longer in effect. 		Jan 23, 15:00 Jan 23, 15:15
High Surf Advisory
Location: Niihau; Kauai Southwest; Waianae Coast; Oahu North Shore; Kauai North
Severity: Minor
Description: ...HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM HST THIS EVENING FOR
NORTH AND WEST FACING SHORES OF NIIHAU KAUAI AND OAHU...

.Surf heights along exposed north and west facing shores will
hold above advisory thresholds through this afternoon. A High
Surf Advisory was extended in time for north and west facing
shores of Niihau, Kauai and Oahu until this evening.

* WHAT...North facing shores, large breaking waves of 12 to 16
feet. West facing shores, large breaking waves of 8 to 12 feet.

* WHERE...North and west facing shores of Niihau, Kauai and Oahu.

* WHEN...Until 6 PM HST this evening.

* IMPACTS...Moderate. Strong breaking waves and strong currents
will make swimming dangerous. 		Jan 23, 9:01 Jan 23, 18:00

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.