Terremoto moderato mag. 4.9 - Ceram Sea, 166 km a nord da Tual, Maluku, Indonesia, mercoledí, 17 febbraio 2021 -
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Terremoto moderato magnitudine 4.9 at 10 km depth
17 Feb 20:36 UTC: Primo a segnalare: EMSC dopo 7 minuti.
17 Feb 20:40: Ora utilizzando nuova fonte di dati: BMKG
18 Feb 04:50: Magnitudine ricalcolata da 4.8 a 4.9.
17 Feb 20:40: Ora utilizzando nuova fonte di dati: BMKG
18 Feb 04:50: Magnitudine ricalcolata da 4.8 a 4.9.
Update Wed, 17 Feb 2021, 20:42
Moderate earthquake of magnitude 4.8 just reported 83 km southeast of Mas, Indonesia4.8 quake 18 Feb 5:28 am (GMT +9)
A magnitude 4.8 earthquake near Mas, Indonesia, was reported only 13 minutes ago by Indonesia's Meteorology, Climatology, and Geophysical Agency, considered the main national agency that monitors seismic activity in Indonesia. The earthquake occurred at a shallow depth of 10 km beneath the epicenter early morning on Thursday 18 February 2021 at 5:28 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.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.8 earthquake as well.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Mas (pop. 320) located 83 km from the epicenter.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you’re in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.8 earthquake as well.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Mas (pop. 320) located 83 km from the epicenter.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you’re in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.
Earthquake data:
Data & ora: 17 Feb 2021 20:28:55 UTC -
Ora locale a epicentro: Thursday, 18 Feb 2021 05:28 (GMT +9)
Magnitudine: 4.9
Profondità: 10.0 km
Epicentro latitudine / longitudine: 4.16°S / 133.02°E

Nearby towns and cities:
83 km SSE da Mas (pop: 320) --> Vedi sismi vicini
166 km N da Tual (pop: 39,500) --> Vedi sismi vicini
289 km OSO da Nabire (pop: 43,900) --> Vedi sismi vicini
385 km SSO da Manokwari (pop: 53,200) --> Vedi sismi vicini
414 km SSE da Sorong (pop: 125,500) --> Vedi sismi vicini
Weather at epicenter at time of quake:
Overcast Clouds
27.1°C (81 F), humidity: 72%, wind: 3 m/s (6 kts) from NW
Fonte dati primaria: BMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)Overcast Clouds

Stima dell'energia sismica liberata: 1.4 x 1012 joules (392 megawatt hours, equivalent to 338 tons of TNT) More info
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.
Magnitudine | Profondità | Ubicazione | Fonte |
4.9 | 10 km | Irian Jaya Region, Indonesia | BMKG |
4.7 | 2 km | Irian Jaya Region, Indonesia | EMSC |
4.8 | 10 km | 149 Km N of Tual, Indonesia | USGS |
4.8 | 10 km | Irian Jaya Region, Indonesia | GFZ |
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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There are no user reports for this quake yet. If you felt it Earlier earthquakes in the same area since 1900
- Date / time UTC| Mag |Profondità|Age|Distanza| Details
- 01 Feb 1938 19:04| 8.5 |25km / 16mi|83 anni fa|184km / 115mi| Banda Sea, 42 km SW of Pulau Uran Island, Maluku, Indonesia
- 06 Nov 1943 08:31| 7.7 |15km / 9.3mi|77 anni fa|195km / 121mi| Aru Sea, 140 km E of Tual, Maluku, Indonesia
- 07 Feb 2004 02:42| 7.3 |10km / 6.2mi|17 anni fa|223km / 139mi| West Papua, 89 km SW of Nabire, Papua, Indonesia
- 27 Jan 1942 13:29| 7.2 |17.5km / 10.9mi|79 anni fa|227km / 141mi| 105 km SW of Nabire, Papua, Indonesia
- 15 Feb 1936 12:46| 7.1 |15km / 9.3mi|85 anni fa|33km / 21mi| Ceram Sea, 40 km SE of Pulau Nasaulang Island, West Papua, Indonesia
- 29 Sep 2010 17:11| 7.0 |26km / 16mi|11 anni fa|121km / 75mi| Aru Sea, 134 km NE of Tual, Maluku, Indonesia
- 25 Jul 1988 06:46| 7.0 |28km / 17mi|33 anni fa|225km / 140mi| Aru Sea, 113 km SE of Tual, Maluku, Indonesia
- 07 Dec 1928 09:14| 7.0 |15km / 9.3mi|92 anni fa|91km / 56mi| Aru Sea, 2 km NE of Tual, Maluku, Indonesia
- 12 Oct 2012 00:31| 6.7 |25km / 15mi|9 anni fa|140km / 87mi| Aru Sea, 172 km NE of Tual, Maluku, Indonesia
- 04 Apr 2001 07:44| 6.4 |33km / 21mi|20 anni fa|134km / 83mi| Banda Sea, 66 km NW of Tual, Maluku, Indonesia
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