By SHOKO RIKIMARU/ Staff Writer
July 31, 2025 at 15:47 JST
As of 10:45 a.m. on July 31, tsunami advisories remain in effect in the areas highlighted in yellow. (Captured from JMA’s website)
Tsunami advisories issued along the Pacific coast from Hokkaido to Okinawa following the massive earthquake off Russia’s Kamchatka Peninsula were lifted in some parts at 10:45 a.m. on July 31.
Advisories have been removed for the Sea of Japan coast of Aomori Prefecture, as well as Shizuoka, Osaka, Wakayama and Kochi prefectures on the Pacific coast.
However, advisories remain in effect for some areas along the Pacific coast from Hokkaido to Chiba Prefecture, Tokyo and parts of Kagoshima Prefecture.
Even after midnight on July 30, some parts of Hokkaido and Kagoshima prefectures continued to record high tsunami waves.
The earthquake struck off the Kamchatka Penninsula at around 8:25 a.m. on July 30 with an estimated magnitude of 8.7. The epicenter was approximately 1,500 kilometers northeast of Nemuro, Hokkaido, according to the Japan Meteorological Agency.
Following the earthquake, the JMA issued tsunami warnings to the Pacific coastal area of Tokyo and 12 prefectures, from Hokkaido to Wakayama prefectures, along with tsunami advisories to the Shikoku and Kyushu regions and Okinawa and other prefectures.
According to the JMA, tsunami waves of up to 1.3 meters high were observed across Tokyo and 21 prefectures from Hokkaido to Okinawa. Even after midnight on July 30, tsunami waves continued to be recorded including 20 centimeters in Otaru, Hokkaido, and 50 cm in Shibushi, Kagoshima Prefecture.
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