Magnitude 4.9 Quake Off Fukushima, No Tsunami Warning Issued

Oct 07, 2025 | News On Japan

FUKUSHIMA, Oct 07, 2025 (News On Japan) - A magnitude 4.9 earthquake occurred off the coast of Fukushima Prefecture around 9:30 a.m. on October 7th, registering a maximum intensity of 4 on the Japanese seismic scale. According to the Japan Meteorological Agency, there is no risk of a tsunami caused by this tremor.

The quake struck at a depth of about 50 kilometers beneath the seabed off Fukushima, with strong shaking recorded in the towns of Futaba and Namie, both registering an intensity of 4. Areas across Fukushima and Miyagi Prefectures also experienced intensity-3 shaking. Reports collected by Weathernews described the tremor as a sudden jolt that felt like being pushed upward, particularly near the epicenter.

Just two days earlier, a magnitude 6.0 earthquake had occurred in nearly the same area off the coast of Fukushima in the early hours of October 5th, also recording a maximum intensity of 4. This latest quake originated slightly west of that epicenter, and while smaller in scale, it was located slightly closer to land, resulting in similar shaking levels.

The region off Fukushima is known for frequent seismic activity, as the Pacific Plate continues to subduct beneath the continental plate along the Japan Trench. Earthquakes of magnitudes between 5 and 6 occur relatively often in this zone. Experts warn that residents should remain alert for future tremors and continue taking precautions against strong quakes.

According to Weathernews, the area has seen repeated quakes at depths around 50 kilometers, consistent with the current event, reflecting the area’s geological instability. Residents are advised to stay informed through the latest updates from official weather and disaster information sources.

Source: ウェザーニュース

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