Late on the night of the 2nd, there was a large earthquake with its epicenter near the Philippines, and a 40-centimeter tsunami was observed on Hachijo Island in the Izu Islands, and the tsunami also reached the Pacific coast from Kyushu to Kanto and the Amami region.
The Japan Meteorological Agency lifted all tsunami warnings that had been issued for a wide area, including the Pacific coast, at 9 a.m., but people should not go near the coast as a precaution as the tide level may continue to change slightly for about a day. I am calling on you to do so.
The Japan Meteorological Agency lifted all tsunami warnings that had been issued for a wide area, including the Pacific coast, at 9 a.m., but people should not go near the coast as a precaution as the tide level may continue to change slightly for about a day. I am calling on you to do so.
According to the Japan Meteorological Agency, late on the night of the 2nd, there was a large earthquake with a magnitude of 7.7 with its epicenter near Mindanao Island in the Philippines.
The Japan Meteorological Agency says the depth of the epicenter is unknown. Due to this earthquake, the Japan Meteorological Agency issued a tsunami advisory for the Miyako Island and Yaeyama regions, the Amami Islands in Kagoshima Prefecture, the Tokara Islands, the Izu Islands, the Ogasawara Islands, and the Pacific coast from Kyushu to Chiba Prefecture.
Tsunami waves were observed in various places at dawn, with a tsunami measuring 20 cm at Amami Oshima and Kominato at 3:12 a.m., and the highest 40 cm tsunami at 4:27 a.m. at Hachijojima and Yaene in the Izu Islands. I observed it.
Additionally, tsunamis ranging from several centimeters to 20 centimeters in height were observed in Kagoshima, Kochi, Tokushima, Wakayama, Mie, Shizuoka, Aichi, Chiba, and the Ogasawara Islands.
As changes in tide levels subsequently decreased, the Japan Meteorological Agency lifted the tsunami advisory for Miyakojima and Yaeyama regions at 7 a.m., and all tsunami advisories issued for other areas at 9 a.m.
The Japan Meteorological Agency warns that the tide level may continue to change slightly for about a day after this, so people are urged to stay away from the coast just in case.
Additional warning announced for “tsunami observation” Japan Meteorological Agency “Error in forecast”
This time, the Japan Meteorological Agency issued a tsunami advisory for the Pacific coast from Miyakojima and the Yaeyama region to Chiba Prefecture, but initially the Amami Islands and Tokara Islands in Kagoshima Prefecture were not included.
In the Amami Islands and Tokara Islands, a tsunami of 20 centimeters or more, which is the standard for a tsunami warning, was not expected, and it was expected that there would be only a slight change in the tide level. An additional tsunami advisory was issued seven minutes later as a tsunami was observed.
The Japan Meteorological Agency says this has something to do with the announcement system.
Since it takes time to calculate a tsunami advisory after an earthquake has occurred, the Japan Meteorological Agency searches for and announces prediction results corresponding to the location and scale of the earthquake from a pre-prepared database. That’s it.
For this reason, predictions of tsunamis of 1 meter or less can have an error of several centimeters, so the Japan Meteorological Agency urges people to check the latest information.
