Sismo leggero mag. 4.3 - Sea of Okhotsk, 25 km a sud ovest da Shikotan, Sakhalin Oblast, Russia, lunedí, 19 aprile 2021 -

Sismo leggero mag. 4.3 - Sea of Okhotsk, 25 km a sud ovest da Shikotan, Sakhalin Oblast, Russia, lunedí, 19 aprile 2021

Sismo leggero magnitudine 4.3 at 78 km depth

19 Apr 10:36 UTC: Primo a segnalare: EMSC dopo 14 minuti.
19 Apr 11:17: Magnitudine ricalcolata da 4.2 a 4.3. Profondità ricalcolata da 50.0 a 78.0 km (da 31 a 48 mi). Posizione dell'epicentro corretta di 13 km (8.1 mi) al NO.
19 Apr 11:48: Profondità ricalcolata da 78.0 a 66.0 km (da 48 a 41 mi). Posizione dell'epicentro corretta di 19 km (12 mi) al N.
19 Apr 12:17: Profondità ricalcolata da 66.0 a 78.0 km (da 41 a 48 mi). Posizione dell'epicentro corretta di 11 km (6.9 mi) al S.
Update Mon, 19 Apr 2021, 10:42
Moderate tremor of magnitude 4.2 just reported 24 km southwest of Shikotan, Russia
4.2 quake 19 Apr 8:22 pm (GMT +10)
4.2 quake 19 Apr 8:22 pm (GMT +10)
An earthquake of magnitude 4.2 occurred in the evening on Monday 19 April 2021 at 8:22 pm local time near Shikotan, Sakhalin Oblast, Russia, as reported by the European-Mediterranean Seismological Centre (EMSC).
According to preliminary data, the quake was located at a moderately shallow depth of 50 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.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Shikotan (pop. 2,100) located 24 km from the epicenter, Yuzhno-Kurilsk (pop. 6,500) 76 km away, Otrada (pop. 3,200) 79 km away, and Nemuro (pop. 31,200) 88 km away.
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Earthquake data:

Data & ora: 19 Apr 2021 10:22:32 UTC -
Ora locale a epicentro: 19 Apr 8:22 pm (GMT +10)
Magnitudine: 4.3
Profondità: 78.0 km
Epicentro latitudine / longitudine: 43.74°N / 146.44°E (Sea of Okhotsk, Russia)
Vulcano più vicino: Mendeleev (81 km / 50 mi)
Nearby towns and cities:
24 km OSO da Shikotan (pop: 2,100) --> Vedi sismi vicini
56 km SE da Yuzhno-Kurilsk (pop: 6,470) --> Vedi sismi vicini
84 km NE da Nemuro (Giappone) (pop: 31,200) --> Vedi sismi vicini
106 km E da Shibetsu (Giappone) (pop: 21,700) --> Vedi sismi vicini
177 km E da Abashiri (Giappone) (pop: 42,500) --> Vedi sismi vicini
187 km ENE da Kushiro (Giappone) (pop: 183,600) --> Vedi sismi vicini
205 km E da Kitami (Giappone) (pop: 113,100) --> Vedi sismi vicini
277 km ENE da Obihiro (Giappone) (pop: 173,900) --> Vedi sismi vicini
431 km SE da Korsakov (pop: 35,100) --> Vedi sismi vicini
460 km SE da Južno-Sachalinsk (pop: 176,500) --> Vedi sismi vicini
25 km OSO da Shikotan Island (pop: 2,100) --> Vedi sismi vicini
64 km SE da Kunajiri Island (pop: 7,000) --> Vedi sismi vicini
Weather at epicenter at time of quake:
Overcast Clouds 3.7°C (39 F), humidity: 90%, wind: 8 m/s (15 kts) from SW
Fonte dati primaria: EMSC (European-Mediterranean Seismological Centre)
Stima dell'energia sismica liberata: 1.8 x 1011 joules (49.4 megawatt hours, equivalent to 42.5 tons of TNT) More info
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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.ProfonditàUbicazioneFonte
4.378 kmKURIL ISLANDS, RussiaEMSC
4.373 km24 Km WSW of Shikotan, RussiaUSGS
4.571 kmKuril Islands, RussiaGFZ

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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