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Weak mag. 3.8 earthquake - 4.1 km northeast of Chiba, Japan, on Monday, Oct 3, 2022 at 2:33 am (GMT +9) -

Weak mag. 3.8 earthquake - 4.1 km northeast of Chiba, Japan, on Monday, Oct 3, 2022 at 2:33 am (GMT +9) Weak mag. 3.8 earthquake - 4.1 km northeast of Chiba, Japan, on Monday, Oct 3, 2022 at 2:33 am (GMT +9)

Weak magnitude 3.8 earthquake at 71 km depth

2 Oct 17:40 UTC: First to report: NIED after 7 minutes.

Earthquake details

Date & timeOct 2, 2022 17:33:15 UTC -
Local time at epicenterMonday, Oct 3, 2022 at 2:33 am (GMT +9)
Depth71.2 km
Epicenter latitude / longitude35.614°N / 140.159°E (Chiba-shi, Chiba, Japan)
Antipode35.614°S / 39.841°W
Shaking intensityVery weak shaking
Felt0 reports
Primary data sourceNIED (National Research Institute for Earth Science and Disaster Resilience)
Nearest volcanoHakone (111 km / 69 mi)
Nearby towns and cities4 km (3 mi) S of Yotsukaidō (pop: 86,700) | Show on map | Quakes nearby
4 km (3 mi) ENE of Chiba (pop: 919,700) | Show on map | Quakes nearby
13 km (8 mi) NNE of Ichihara (pop: 283,500) | Show on map | Quakes nearby
13 km (8 mi) SSW of Sakura (pop: 182,500) | Show on map | Quakes nearby
15 km (9 mi) WSW of Yachimata (pop: 83,300) | Show on map | Quakes nearby
24 km (15 mi) SW of Нарита (Chiba-ken) (pop: 100,600) | Show on map | Quakes nearby
43 km (27 mi) E of Tokyo (pop: 8,336,600) | Show on map | Quakes nearby
50 km (31 mi) ENE of Yokohama (Kanagawa) (pop: 3,574,400) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 20.8°C (69 F), humidity: 69%, wind: 2 m/s (4 kts) from NNE
Estimated seismic energy released3.2 x 1010 joules (8.78 megawatt hours, equivalent to 7.56 tons of TNT) | about seismic energy
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
3.570 kmNear East Coast of Honshu, JapanRaspberryShake


Seismic station: Ibaraki Yasato (JYT/JP network) | Distance from quake: 69 km / 43 mi | Show on map | Station Info
Seismic station Ibaraki Yasato: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake.

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