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Minor mag. 3.1 earthquake - North Pacific Ocean, 21 km south of Ofunato, Ōfunato-shi, Iwate, Japan, on Thursday, Dec 8, 2022 at 9:36 am (GMT +9) -

Minor magnitude 3.1 earthquake at 74 km depth

8 Dec 00:42 UTC: First to report: NIED after 6 minutes.

Earthquake details

Date & time	Dec 8, 2022 00:36:13 UTC -
Local time at epicenter	Thursday, Dec 8, 2022 at 9:36 am (GMT +9)
Status	Confirmed
Magnitude	3.1
Depth	74.0 km
Epicenter latitude / longitude	38.892°N / 141.628°E (North Pacific Ocean, Japan)
Antipode	38.892°S / 38.372°W
Shaking intensity	Not felt
Felt
Primary data source	NIED (National Research Institute for Earth Science and Disaster Resilience)
Nearest volcano	Kurikoma (73 km / 45 mi)
Nearby towns and cities	21 km (13 mi) SSW of Ofunato (pop: 35,400) \| Show on map \| Quakes nearby 43 km (27 mi) E of Ichinoseki (pop: 63,000) \| Show on map \| Quakes nearby 48 km (30 mi) SSW of Kamaishi (pop: 43,100) \| Show on map \| Quakes nearby 48 km (30 mi) S of Tōno (pop: 26,800) \| Show on map \| Quakes nearby 60 km (37 mi) NNE of Ishinomaki (pop: 117,200) \| Show on map \| Quakes nearby 62 km (39 mi) SE of Kitakami (pop: 93,900) \| Show on map \| Quakes nearby 96 km (60 mi) NE of Sendai (pop: 1,063,100) \| Show on map \| Quakes nearby 395 km (246 mi) NNE of Tokyo (pop: 8,336,600) \| Show on map \| Quakes nearby 69 km (43 mi) NNE of Tashiro Jima Island (pop: 100) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Clear Sky 5.6°C (42 F), humidity: 69%, wind: 7 m/s (14 kts) from NW
Estimated seismic energy released	2.8 x 10⁹ joules (783 kilowatt hours, equivalent to 0.674 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.

Mag.	Depth	Location	Source
3.1	74 km	Japan: NORTHERN MIYAGI PREF	NIED

Most recent quakes Top 20 past 24 hrs Quakes in Japan

Seismograms

Seismic station: Miyagi Marumori (JMM/JP network) | Distance from quake: 135 km / 84 mi | Show on map | Station Info

Seismic station Miyagi Marumori: 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. Bandpass filter applied: 0.5-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

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Seismic station Miyagi Marumori: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Miyagi Marumori: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake, showing horizontal E-W and N-S ground movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Aomori Tenma (JTM/JP network) | Distance from quake: 216 km / 134 mi | Show on map | Station Info

Seismic station Aomori Tenma: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Aomori Tenma: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Aomori Tenma: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Kamikawa Asahi (JKA/JP network) | Distance from quake: 261 km / 162 mi | Show on map | Station Info

Seismic station Kamikawa Asahi: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Kamikawa Asahi: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Kamikawa Asahi: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Erimo (JEM/JP network) | Distance from quake: 371 km / 230 mi | Show on map | Station Info

Seismic station Erimo: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Erimo: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Erimo: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Gifu Kurokawa (JGF/JP network) | Distance from quake: 526 km / 327 mi | Show on map | Station Info

Seismic station Gifu Kurokawa: 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. Bandpass filter applied: 0.5-5.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station Gifu Kurokawa: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Gifu Kurokawa: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

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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