Big Island, Hawaiʻi – The TSUNAMI WARNING for the State of Hawaiʻi remains in effect. The Pacific Tsunami Warning Center (PTWC) has confirmed a broader pattern of tsunami activity, with new measurements from both deep ocean buoys and coastal gauges in Japan.
The warning was issued following a major 8.7 magnitude earthquake off the Coast of Kamchatka, Russia. The PTWC’s latest bulletin confirms that a tsunami has been generated and could cause damage along Hawaiʻi’s coastlines.
Tsunami Wave Activity Detected: The PTWC is now reporting measurements from several locations across the Pacific:
- Hanasaki, Hokkaido, Japan: A coastal measurement of 0.32 meters (1.0 feet).
- Kushiro, Japan: A coastal measurement of 0.33 meters (1.1 feet).
- DART 21416 (deep ocean): A measurement of 0.90 meters (3.0 feet).
- Other deep ocean buoys: Measurements of 0.19 to 0.28 meters (0.6 to 0.9 feet) were also recorded from other DART buoys.
The PTWC reminds the public that deep ocean DART measurements are generally much smaller than what would be measured at the coast.
The estimated time of arrival of the first tsunami wave in Hawaiʻi remains 07:17 PM HST today, Tuesday, July 29, 2025.
Hawaiʻi County Civil Defense previously issued a message with an evacuation deadline of 6:15 p.m. for those in the Tsunami Evacuation Zone.
Residents in all coastal areas are urged to continue following official instructions and take immediate action. Further messages will be issued hourly or sooner as conditions warrant.