Light mag. 4.6 earthquake - North Pacific Ocean, 31 km south of Nemuro, Hokkaido, Japan, on Wednesday, 7 Apr 2021 1:44 am (GMT +9) -

Light mag. 4.6 earthquake - North Pacific Ocean, 31 km south of Nemuro, Hokkaido, Japan, on Wednesday, 7 Apr 2021 1:44 am (GMT +9)

Séisme faible magnitude 4.6 at 54 km depth

6 Apr 16:51 UTC: Premier à signaler: EMSC après 7 minutes.
6 Apr 17:19: Magnitude recalculée de 4.2 à 4.6. Profondeur recalculée de 50.0 à 57.0 km (de 31 à 35 mi). Emplacement de l'épicentre corrigé de 3.3 km (2.1 mi) au SO.
6 Apr 18:02: Profondeur recalculée de 57.0 à 54.0 km (de 35 à 34 mi). Emplacement de l'épicentre corrigé de 5.9 km (3.7 mi) au SE.
Update Tue, 6 Apr 2021, 16:57
Magnitude 4.2 earthquake strikes near Nemuro, Nemuro-shi, Hokkaido, Japan
4.2 quake 7 Apr 1:44 am (GMT +9)
4.2 quake 7 Apr 1:44 am (GMT +9)
A magnitude 4.2 earthquake near Nemuro, Nemuro-shi, Hokkaido, Japan, was reported only 13 minutes ago by the European-Mediterranean Seismological Centre (EMSC), considered one of the key international agencies that monitor seismic activity worldwide. The earthquake occurred at a moderately shallow depth of 50 km beneath the epicenter early morning on Wednesday 7 April 2021 at 1:44 am local time. 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 Japan's National Research Institute for Earth Science and Disaster Resilience (NIED) which listed the quake at magnitude 4.7.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Nemuro (pop. 31,200) located 25 km from the epicenter, Shibetsu (pop. 21,700) 73 km away, and Kushiro (pop. 183,600) 101 km away.
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Earthquake data:

Date & time: 6 Apr 2021 16:44:15 UTC -
Local time at epicenter: mercredi, 7 avril 2021 01:44 (GMT +9)
Magnitude: 4.6
Profondeur: 54.0 km
Epicenter latitude / longitude: 43.05°N / 145.63°E (Océan Pacifique Nord, Japon)
Volcan le plus près: Golovnin (83 km / 52 mi)
Nearby towns and cities:
31 km S de Nemuro (pop: 31,200) --> Voir les séismes à proximité!
79 km SSE de Shibetsu (pop: 21,700) --> Voir les séismes à proximité!
102 km E de Kushiro (pop: 183,600) --> Voir les séismes à proximité!
151 km SE de Motomachi (Abashiri District) (pop: 23,000) --> Voir les séismes à proximité!
154 km SE de Abashiri (pop: 42,500) --> Voir les séismes à proximité!
164 km ESE de Kitami (pop: 113,100) --> Voir les séismes à proximité!
198 km E de Otofuke (pop: 40,900) --> Voir les séismes à proximité!
198 km E de Obihiro (pop: 173,900) --> Voir les séismes à proximité!
348 km E de Sapporo (pop: 1,883,000) --> Voir les séismes à proximité!
964 km NNE de Tokyo (pop: 8,336,600) --> Voir les séismes à proximité!
237 km ESE de Hokkaido Island (pop: 5,500,000) --> Voir les séismes à proximité!
124 km S de Kunajiri Island (pop: 7,000) --> Voir les séismes à proximité!
122 km SO de Shikotan Island (pop: 2,100) --> Voir les séismes à proximité!
Weather at epicenter at time of quake:
Overcast Clouds 1.2°C (34 F), humidity: 72%, wind: 4 m/s (9 kts) from SE
Primary data source: EMSC (European-Mediterranean Seismological Centre)
Estimated released energy: 5 x 1011 joules (139 megawatt hours, equivalent to 120 tons of TNT) Plus d'infos
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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.
MagnitudeProfondeurLieuSource
4.654 kmHOKKAIDO, JAPAN REGIONEMSC
4.745 kmOFF NEMURO PENINSULA, JapanNIED
4.657 km27 Km S of Nemuro, JapanUSGS

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Akan-chou / Very weak shaking (MMI II) / 2-5 s : It woke me up  
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