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Mag. 4.5 earthquake - Savu Sea, 196 km west of Kupang, East Nusa Tenggara, Indonesia, on Friday, May 7, 2021 09:17 pm (Makassar time)

Moderate magnitude 4.5 earthquake at 18 km depth

7 May 13:25 UTC: First to report: BMKG after 8 minutes.

Earthquake details

Date & time	May 7, 2021 13:17:15 UTC
Local time at epicenter	Friday, May 7, 2021 09:17 pm (Asia/Makassar GMT +8)
Status	Confirmed
Magnitude	4.5
Depth	18.0 km
Epicenter latitude / longitude	10.65°S / 121.88°E Savu Sea, Indonesia
Antipode	10.65°N / 58.12°W
Shaking intensity	Very weak shaking
Felt	2 reports
Primary data source	BMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)
Nearest volcano	Iya (197 km / 122 mi)
Weather at epicenter at time of quake	Overcast Clouds 27.7°C (82 F), humidity: 66%, wind: 6 m/s (12 kts) from ESE
Estimated seismic energy released	3.5 x 10¹¹ joules (98.6 megawatt hours, equivalent to 84.8 tons of TNT) \| about seismic energy

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Nearby places

Distance	Place	Max. shaking intensity(*)	Region	Country
196 km (122 mi) ENE of epicenter	Kupang (pop: 282,400)	II Very weak	East Nusa Tenggara	Indonesia
202 km (126 mi) N of epicenter	Ende (pop: 77,200)	II Very weak	East Nusa Tenggara	Indonesia
209 km (130 mi) WNW of epicenter	Waingapu (pop: 48,800)	II Very weak	East Nusa Tenggara	Indonesia
229 km (142 mi) N of epicenter	Maumere (pop: 47,600)	II Very weak	East Nusa Tenggara	Indonesia
275 km (171 mi) NW of epicenter	Ruteng (pop: 34,600)	II Very weak	East Nusa Tenggara	Indonesia
277 km (172 mi) ENE of epicenter	Soe (pop: 27,700)	II Very weak	East Nusa Tenggara	Indonesia
318 km (198 mi) ENE of epicenter	Pante Macassar (pop: 4,730)	II Very weak	Pante Makasar, Oecusse	East Timor
324 km (201 mi) NW of epicenter	Labuan Bajo (pop: 188,700)	II Very weak	Kabupaten Manggarai Barat, East Nusa Tenggara	Indonesia
348 km (216 mi) NW of epicenter	Komodo (pop: 2,000)	I Not felt	Kabupaten Manggarai Barat, East Nusa Tenggara	Indonesia

Notes:
(*) Shaking intensity according to the Modified Mercalli Intensity Scale (MMI) and estimated using seismic models.

Compare Quake Data

Data for the same earthquake as reported by different agencies

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	Time GMT	Epicenter	Agency
4.5	18 km (11 mi)	2021-05-7 13:17:15	Savu Sea, Indonesia	BMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)
4.5	18 km (11 mi)	2021-05-7 13:17:15	SAVU SEA, Indonesia 0 km (0 mi) epicenter difference with BMKG	EMSC (European-Mediterranean Seismological Centre)
4.4	10 km (6.2 mi) (*)	2021-05-7 13:17:11	Savu Sea, Indonesia 17 km (10.8 mi) epicenter difference with BMKG	USGS (United States Geological Survey)

Notes:
(*) A depth given as 10 km often means that the the depth of the quake could not determined with sufficient accuracy.

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Seismograms

Seismic station: Kappang, Sulawesi, Indonesia (KAPI/II network) | Distance from quake: 669 km / 416 mi | Show on map | Station Info

Seismic station Kappang, Sulawesi, Indonesia: 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

User-reports for this quake (2)

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

Translate

Tanjung Sepat, Malacca Strait (2687.1 km WNW of epicenter) [Map] / Very weak shaking (MMI II) / vibration and rolling / 30-60 s

Melbourne / Very weak shaking (MMI II) / 5-10 s

Earlier earthquakes in the same area

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