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Moderate mag. 5.1 earthquake - Savu Sea, 160 km north of Kupang, East Nusa Tenggara, Indonesia, on Thursday, Mar 23, 2023 at 4:23 am (GMT +8) -

Moderate mag. 5.1 earthquake - Savu Sea, 160 km north of Kupang, East Nusa Tenggara, Indonesia, on Thursday, Mar 23, 2023 at 4:23 am (GMT +8) Moderate mag. 5.1 earthquake - Savu Sea, 160 km north of Kupang, East Nusa Tenggara, Indonesia, on Thursday, Mar 23, 2023 at 4:23 am (GMT +8)

Moderate magnitude 5.1 earthquake at 110 km depth

22 Mar 20:33 UTC: First to report: GFZ after 10 minutes.
22 Mar 20:41: Now using data updates from USGS
28 Mar 16:52: Hypocenter depth recalculated from 110.2 to 109.5 km (from 68 to 68 mi). Epicenter location corrected by 0.9 km (0.6 mi) towards NE.
Update Wed, 22 Mar 2023, 20:48

Magnitude 5.1 earthquake strikes near Maumere, East Nusa Tenggara, Indonesia

5.1 quake 23 Mar 4:23 am (GMT +8)
5.1 quake 23 Mar 4:23 am (GMT +8)
Indonesia was shaken near Maumere, East Nusa Tenggara, by an earthquake of magnitude 5.1 only 24 minutes ago, the United States Geological Survey reported.
The quake hit at an intermediate depth of 110.2 km beneath the epicenter near Maumere, East Nusa Tenggara, Indonesia, early morning on Thursday, March 23rd, 2023, at 4:23 am local time. The strength of the earthquake may have been tempered by its relative great depth below the surface, which makes it feel weaker in absolute terms. 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 European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 5.1 as well. Other agencies reporting the same quake include the German Research Centre for Geosciences (GFZ) at magnitude 4.8, and the citizen-seismograph network of RaspberryShake at magnitude 5.1.
Generally quakes of this magnitude are recorded by more than one agency and the results can vary, with subsequent reports that come in after the first one often showing more accuracy.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Maumere (pop. 47,600) located 106 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.

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Earthquake details

Date & timeMar 22, 2023 20:23:45 UTC -
Local time at epicenterThursday, Mar 23, 2023 at 4:23 am (GMT +8)
Depth109.5 km
Epicenter latitude / longitude8.8035°S / 123.1609°E (Savu Sea, Indonesia)
Antipode8.804°N / 56.839°W
Shaking intensityWeak shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoIlilabalekan (37 km / 23 mi)
Nearby towns and cities106 km (66 mi) E of Maumere (pop: 47,600) | Show on map | Quakes nearby
160 km (99 mi) NNW of Kupang (pop: 282,400) | Show on map | Quakes nearby
161 km (100 mi) WNW of Kefamenanu (Kabupaten Timor Tengah Utara) (pop: 29,500) | Show on map | Quakes nearby
165 km (102 mi) E of Ende (pop: 77,200) | Show on map | Quakes nearby
170 km (106 mi) NW of Soe (Kabupaten Timor Tengah Selatan) (pop: 27,700) | Show on map | Quakes nearby
193 km (120 mi) W of Atambua (Kabupaten Belu) (pop: 35,800) | Show on map | Quakes nearby
267 km (166 mi) W of Delhi (Timor-Leste) (pop: 150,000) | Show on map | Quakes nearby
362 km (225 mi) E of Labuan Bajo (pop: 188,700) | Show on map | Quakes nearby
142 km (88 mi) WSW of Pura Island (pop: 5,350) | Show on map | Quakes nearby
224 km (139 mi) E of Flores Island (pop: 1,831,000) | Show on map | Quakes nearby
312 km (194 mi) W of Timor Island (pop: 3,182,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 27.8°C (82 F), humidity: 77%, wind: 3 m/s (7 kts) from N
Estimated seismic energy released2.8 x 1012 joules (783 megawatt hours, equivalent to 674 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.
5.1110 km106 Km E of Maumere, IndonesiaUSGS
5.1110 kmFlores Region, IndonesiaRaspberryShake
4.7101 kmFlores Region, IndonesiaGFZ
5.0173 kmIndonesia: Near UjungpandangRENASS

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.


[More info]

Recorded aftershocks, latest first (0 quake)

So far, no aftershocks have been registered.

Earlier earthquakes in the same area

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