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Light mag. 4.2 earthquake - 39 km west of Asahikawa, Hokkaido, Japan, on Friday, Dec 9, 2022 at 10:57 am (GMT +9) -

Light magnitude 4.2 earthquake at 203 km depth

9 Dec 02:05 UTC: First to report: NIED after 8 minutes.
9 Dec 02:17: Now using data updates from USGS

Earthquake details

Date & time	Dec 9, 2022 01:57:12 UTC -
Local time at epicenter	Friday, Dec 9, 2022 at 10:57 am (GMT +9)
Status	Confirmed
Magnitude	4.2
Depth	203.3 km
Epicenter latitude / longitude	43.8107°N / 141.8775°E (Uryū Gun, Hokkaido, Japan)
Antipode	43.811°S / 38.123°W
Shaking intensity	Very weak shaking
Felt	0 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Tokachi (79 km / 49 mi)
Nearby towns and cities	17 km (11 mi) NW of Fukagawa (pop: 26,200) \| Show on map \| Quakes nearby 23 km (14 mi) SE of Rumoi (pop: 26,500) \| Show on map \| Quakes nearby 29 km (18 mi) N of Takikawa (pop: 45,100) \| Show on map \| Quakes nearby 36 km (22 mi) N of Sunagawa (pop: 20,100) \| Show on map \| Quakes nearby 39 km (24 mi) W of Asahikawa (pop: 356,600) \| Show on map \| Quakes nearby 69 km (43 mi) N of Iwamizawa (pop: 85,100) \| Show on map \| Quakes nearby 93 km (58 mi) NNE of Sapporo (pop: 1,883,000) \| Show on map \| Quakes nearby 922 km (573 mi) N of Tokyo (pop: 8,336,600) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Light Snow -3.4°C (26 F), humidity: 75%, wind: 4 m/s (7 kts) from W
Estimated seismic energy released	1.3 x 10¹¹ joules (35 megawatt hours, equivalent to 30.1 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
4.2	203 km	Japan: KAMIKAWA-SORACHI REGION	USGS
4.4	198 km	Hokkaido, Japan Region	GFZ
4.2	200 km	HOKKAIDO, JAPAN REGION	EMSC
4.2	203 km	Hokkaido, Japan Region	RaspberryShake
4.3	207 km	Hokkaido, Japan Region	NIED
4.2	10 km	Hokkaido, Japan Region	IRIS

Most recent quakes Top 20 past 24 hrs Quakes in Japan

Seismograms

Seismic station: Eniwa (JEW/JP network) | Distance from quake: 113 km / 70 mi | Show on map | Station Info

Seismic station Eniwa: 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: 0.2-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

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

Seismic station Eniwa: 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: Erimo (JEM/JP network) | Distance from quake: 225 km / 140 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: Aomori Tenma (JTM/JP network) | Distance from quake: 343 km / 213 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: Miyagi Marumori (JMM/JP network) | Distance from quake: 667 km / 414 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: 0.2-5.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

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

Seismic station: Inuyama, Japan (INU/G network) | Distance from quake: 1028 km / 639 mi | Show on map | Station Info

Seismic station Inuyama, Japan: 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: 0.2-5.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

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

Seismic station Inuyama, Japan: 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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