Magnitude 4.8 earthquake in northeastern Chiba brings shindo 4 to Asahi, no tsunami risk
In short
An earthquake with an estimated magnitude of 4.8 struck northeastern Chiba Prefecture at about 04:13 on 8 October, registering shindo 4 on Japan's seismic intensity scale in the city of Asahi. The Japan Meteorological Agency said there was no risk of a tsunami, and the focus was about 50 km deep.
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An earthquake struck at about 04:13 local time on 8 October with its epicentre in northeastern Chiba Prefecture, recording shindo 4 on Japan's seismic intensity scale in the city of Asahi. According to the Japan Meteorological Agency, the focus was about 50 km deep and the magnitude was estimated at 4.8. The agency said there was no risk of a tsunami from the earthquake, as reported by the Yomiuri Shimbun, Nishi-Nippon Shimbun and Sankei Shimbun. NHK also reported that there was no risk of a tsunami. [ 3 , 4 , 5 , 9 , 10 ]
Shindo 3 was recorded in Narita, Sosa, Katori, Sanmu, Tako and Shibayama in Chiba Prefecture, and in Itako and Inashiki in Ibaraki Prefecture. Nishi-Nippon Shimbun and Sankei Shimbun listed shindo 2 readings in Tsuchiura, Omitama and Kawachi in Ibaraki, and in Chiba City's Chuo Ward, Ichinomiya, Shirako, Nagara and Chonan in Chiba, among other places. [ 4 , 9 , 10 ]
Nippon TV News reported shindo 4 in the Kanto region at 04:17, and NHK News issued its earthquake bulletin at 04:18. Jiji Press and Tokyo Shimbun also reported shindo 4 in Chiba. None of the documents mentions damage or injuries. [ 2 , 3 , 7 , 8 ]
Why it matters
The quake was felt across parts of Chiba and Ibaraki prefectures, with shindo 3 recorded in eight municipalities including Narita. Outlets reported no tsunami risk, and the documents do not mention damage or injuries.
Key facts
- The earthquake occurred at about 04:13 local time on 8 October. [ 1 , 3 , 4 , 5 , 9 , 10 ]
- The epicentre was in northeastern Chiba Prefecture. [ 4 , 5 , 9 , 10 ]
- The magnitude was estimated at 4.8. [ 4 , 5 , 9 , 10 ]
- The focus was about 50 km deep. [ 4 , 9 , 10 ]
- The strongest shaking, shindo 4, was recorded in Asahi, Chiba Prefecture. [ 4 , 9 , 10 ]
- The Japan Meteorological Agency said there was no risk of a tsunami. [ 4 , 9 , 10 ]
- Shindo 3 was recorded in Narita, Sosa, Katori, Sanmu, Tako and Shibayama in Chiba, and in Itako and Inashiki in Ibaraki. [ 4 , 9 , 10 ]
Confirmed by several sources
- An earthquake at about 04:13 on 8 October produced shindo 4 shaking in Chiba Prefecture. [ 3 , 4 , 5 , 9 , 10 ]
- The epicentre was in northeastern Chiba Prefecture and the magnitude was estimated at 4.8. [ 4 , 5 , 9 , 10 ]
- The focus was about 50 km deep. [ 4 , 9 , 10 ]
- There was no risk of a tsunami. [ 3 , 4 , 5 , 8 , 9 , 10 ]
- Shindo 4 was recorded in Asahi. [ 4 , 9 , 10 ]
Still unclear
- Whether the earthquake caused any damage or injuries. None of the documents mentions damage, injuries or disruption either way.
What local media are saying
Timeline, local time
- An earthquake with its epicentre in northeastern Chiba Prefecture strikes, recording shindo 4 in Asahi. [ 1 , 3 , 4 , 5 , 9 , 10 ]
- Nippon TV News reports shindo 4 in the Kanto region. [ 2 ]
- NHK News issues an earthquake bulletin saying there is no risk of a tsunami. [ 3 ]
- Yomiuri Shimbun and Yahoo! News Japan report the magnitude estimate of 4.8 and no tsunami risk. [ 4 , 5 ]