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Light mag. 4.0 earthquake - North Pacific Ocean, 54 km southeast of Samanai, Samani-gun, Hokkaido, Japan, on Tuesday, Aug 16, 2022 at 2:32 pm (GMT +9) -

Light mag. 4.0 earthquake - North Pacific Ocean, 54 km southeast of Samanai, Samani-gun, Hokkaido, Japan, on Tuesday, Aug 16, 2022 at 2:32 pm (GMT +9) Light mag. 4.0 earthquake - North Pacific Ocean, 54 km southeast of Samanai, Samani-gun, Hokkaido, Japan, on Tuesday, Aug 16, 2022 at 2:32 pm (GMT +9)

Light magnitude 4.0 earthquake at 40 km depth

16 Aug 05:40 UTC: First to report: EMSC after 8 minutes.
Update Tue, 16 Aug 2022, 05:48

Moderate 4.0 quake hits near Samanai, Samani-gun, Hokkaido, Japan

4.0 quake 16 Aug 2:32 pm (GMT +9)
4.0 quake 16 Aug 2:32 pm (GMT +9)
An earthquake of magnitude 4.0 occurred early afternoon on Tuesday, August 16th, 2022, at 2:32 pm local time near Samanai, Samani-gun, Hokkaido, Japan, as reported by the European-Mediterranean Seismological Centre (EMSC).
According to preliminary data, the quake was located at a moderately shallow depth of 40 km. 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.
Our monitoring service identified a second report from the citizen-seismograph network of RaspberryShake which listed the quake at magnitude 4.0 as well.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Samanai (pop. 4,500) located 54 km from the epicenter.

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Earthquake details

Date & timeAug 16, 2022 05:32:30 UTC -
Local time at epicenterTuesday, Aug 16, 2022 at 2:32 pm (GMT +9)
Depth40.0 km
Epicenter latitude / longitude41.8°N / 143.4°E (North Pacific Ocean, Japan)
Antipode41.8°S / 36.6°W
Shaking intensityWeak shaking near epicenter
Felt0 reports
Primary data sourceEMSC (European-Mediterranean Seismological Centre)
Nearest volcanoAkan (183 km / 114 mi)
Nearby towns and cities54 km (34 mi) SE of Samanai (pop: 4,480) | Show on map | Quakes nearby
104 km (65 mi) SE of Shizunai-furukawachō (pop: 22,400) | Show on map | Quakes nearby
125 km (78 mi) S of Obihiro (pop: 173,900) | Show on map | Quakes nearby
134 km (83 mi) S of Otofuke (pop: 40,900) | Show on map | Quakes nearby
153 km (95 mi) SSW of Kushiro (pop: 183,600) | Show on map | Quakes nearby
175 km (109 mi) ESE of Tomakomai (pop: 174,800) | Show on map | Quakes nearby
219 km (136 mi) SE of Sapporo (pop: 1,883,000) | Show on map | Quakes nearby
752 km (467 mi) NNE of Tokyo (pop: 8,336,600) | Show on map | Quakes nearby
Weather at epicenter at time of quakeLight Rain 22.6°C (73 F), humidity: 92%, wind: 14 m/s (28 kts) from SSW
Estimated seismic energy released6.3 x 1010 joules (17.5 megawatt hours, equivalent to 15.1 tons of TNT) | about seismic energy
Show interactive Map
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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.
4.040 kmHokkaido, Japan RegionRaspberryShake


Seismic station: Erimo, Hokkaido Island, Japan (ERM/II network) | Distance from quake: 31 km / 19 mi | Show on map | Station Info
Seismic station Erimo, Hokkaido Island, 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. Source: IRIS Buffer of Uniform Data (BUD) webtool
Show more

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.

Earlier earthquakes in the same area

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