 Map of JMA seismic intensities for the 3 July event | |
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| UTC time | 2025-07-02 06:26:49 |
|---|---|
| USGS-ANSS | ComCat |
| Local date | 21 June 2025 – ongoing |
| Local time | 15:26 JST (UTC+9) |
| Magnitude | Mw 5.6 (strongest tremor) |
| Depth | 10 km (6 mi) (USGS) 1 km (1 mi) (JMA) |
| Epicenter | Tatsugō, Kagoshima 29°13′37″N129°18′58″E / 29.227°N 129.316°E (strongest tremor) |
| Type | Strike-slip (strongest tremor) |
| Areas affected | Tokara Islands |
| Max. intensity | JMA 5− (MMI VI) [1] |
| Casualties | None |
From June 21, an intensive earthquake swarm started occurring near the lightly populated Tokara Islands, located on the Kagoshima Prefecture, Japan. [2] [3] [4] The most intense shaking registered a 6- on the JMA Shindo scale on July 4, and the most powerful earthquake was a Mw 5.6 on July 3. [5] This earthquake swarm is the most intense such since 1995. [2] 31 residents requested evacuation to Mainland Japan following several earthquakes of 5+ on the JMA scale, i.e. approximately VII on the Mercalli scale. [6] [7] Only cracks in roads and a schoolyard, [8] as well as landslides and rockfalls were reported in the islands, with no injuries reported. [9] A strange roaring from the sea before the earthquakes has also been reported, and the quakes and been strong and constant enough to substantially interrupt sleep. [10]
