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Light mag. 4.1 earthquake - 32 km northeast of Asahikawa, Hokkaido, Japan, on Thursday, Nov 11, 2021 at 7:07 pm (GMT +9) -

Light magnitude 4.1 earthquake at 231 km depth

11 Nov 10:16 UTC: First to report: NIED after 8 minutes.

Update Thu, 11 Nov 2021, 10:21

Moderate tremor of magnitude 4.1 just reported 32 km northeast of Asahikawa, Japan

4.1 quake 11 Nov 7:07 pm (GMT +9)

An intermediate to deep magnitude 4.1 earthquake was reported early evening near Asahikawa, Asahikawa City, Hokkaido, Japan.
According to Japan's National Research Institute for Earth Science and Disaster Resilience (NIED), the quake hit on Thursday, November 11th, 2021, at 7:07 pm local time at an intermediate to considerable depth of 230.7 km. The strength of the earthquake may have been tempered by its relative great depth below the surface, which makes it feel weaker in absolute terms. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
According to preliminary calculations, we do not expect that the quake was felt by many people and did not cause any damage. In Kamikawa (pop. 5,300, 10 km away), Asahikawa (pop. 356,600, 32 km away), Nayoro (pop. 26,500, 53 km away), Fukagawa (pop. 26,200, 58 km away), Ashibetsu (pop. 19,100, 61 km away), Shimo-furano (pop. 25,900, 68 km away), Takikawa (pop. 45,100, 76 km away), and Kitami (pop. 113,100, 96 km away), the quake was probably not felt.

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Earthquake details

Date & time	Nov 11, 2021 10:07:59 UTC -
Local time at epicenter	Thursday, Nov 11, 2021 at 7:07 pm (GMT +9)
Status	Confirmed
Magnitude	4.1
Depth	230.7 km
Epicenter latitude / longitude	43.913°N / 142.706°E (Kamikawa-gun (Ishikari), Hokkaido, Japan)
Antipode	43.913°S / 37.294°W
Shaking intensity	Not felt
Felt
Primary data source	NIED (National Research Institute for Earth Science and Disaster Resilience)
Nearest volcano	Daisetsu (31 km / 19 mi)
Nearby towns and cities	10 km (6 mi) NNW of Kamikawa (pop: 5,290) \| Show on map \| Quakes nearby 32 km (20 mi) ENE of Asahikawa (pop: 356,600) \| Show on map \| Quakes nearby 53 km (33 mi) SSE of Nayoro (pop: 26,500) \| Show on map \| Quakes nearby 58 km (36 mi) ENE of Fukagawa (pop: 26,200) \| Show on map \| Quakes nearby 61 km (38 mi) NE of Ashibetsu (pop: 19,100) \| Show on map \| Quakes nearby 68 km (42 mi) NNE of Shimo-furano (Furano) (pop: 25,900) \| Show on map \| Quakes nearby 76 km (47 mi) ENE of Takikawa (pop: 45,100) \| Show on map \| Quakes nearby 96 km (60 mi) W of Kitami (pop: 113,100) \| Show on map \| Quakes nearby 144 km (90 mi) NE of Sapporo (pop: 1,883,000) \| Show on map \| Quakes nearby 950 km (590 mi) NNE of Tokyo (pop: 8,336,600) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Broken Clouds 3.4°C (38 F), humidity: 82%, wind: 7 m/s (13 kts) from SSW
Estimated seismic energy released	8.9 x 10¹⁰ joules (24.8 megawatt hours, equivalent to 21.3 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
4.1	231 km	Japan: KAMIKAWA-SORACHI REGION	NIED

Most recent quakes Top 20 past 24 hrs Quakes in Japan

Seismograms

Seismic station: Eniwa (JEW/JP network) | Distance from quake: 157 km / 97 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: 214 km / 133 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: Kamikawa Asahi (JKA/JP network) | Distance from quake: 311 km / 193 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: Miyagi Marumori (JMM/JP network) | Distance from quake: 691 km / 429 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: Gifu Kurokawa (JGF/JP network) | Distance from quake: 1030 km / 640 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: 0.2-5.0 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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