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Very strong mag. 6.0 Earthquake - Indian Ocean on Monday, Nov 15, 2021 07:23 am (GMT +3)

Very strong mag. 6.0 Earthquake - Indian Ocean on Monday, Nov 15, 2021 07:23 am (GMT +3) Very strong mag. 6.0 Earthquake - Indian Ocean on Monday, Nov 15, 2021 07:23 am (GMT +3)

Very strong magnitude 6.0 earthquake at 10 km depth

15 Nov 04:35 UTC: First to report: GFZ after 12 minutes.
15 Nov 04:36: Epicenter location corrected by 5.4 km (3.4 mi) towards E.
15 Nov 04:44: Now using data updates from USGS

Earthquake details

Date & timeNov 15, 2021 04:23:30 UTC
Local time at epicenterMonday, Nov 15, 2021 07:23 am (GMT +3)
Depth10.0 km
Epicenter latitude / longitude37.4942°S / 51.269°E
Antipode37.4942°N / 128.731°W
Shaking intensityStrong shaking near epicenter
Felt3 reports
Primary data sourceUSGS (United States Geological Survey)
Weather at epicenter at time of quakeClear Sky 16.2°C (61 F), humidity: 81%, wind: 7 m/s (14 kts) from SW
Estimated seismic energy released6.3 x 1013 joules (17.5 gigawatt hours, equivalent to 15080 tons of TNT or 0.9 atomic bombs!) | about seismic energy
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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
6.0 10 km (6.2 mi) (*) 2021-11-15 04:23:30 South Indian Ocean USGS (United States Geological Survey)
5.9 10 km (6.2 mi) (*) 2021-11-15 04:23:31 Southwest Indian Ridge
28 km (18 mi) epicenter difference with USGS
BMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)
6.0 10 km (6.2 mi) (*) 2021-11-15 04:23:30 SOUTH INDIAN OCEAN
12 km (7.5 mi) epicenter difference with USGS
EMSC (European-Mediterranean Seismological Centre)
5.3 10 km (6.2 mi) (*) 2021-11-15 04:23:32 Near Fianarantsoa
17 km (10.4 mi) epicenter difference with USGS
RENASS (Réseau National de Surveillance Sismique (RéNaSS))
6.0 10 km (6.2 mi) (*) 2021-11-15 04:23:31 South Indian Ocean
10.9 km (6.8 mi) epicenter difference with USGS
GFZ (German Research Centre for Geosciences)
6.1 0.8 km (0.5 mi) 2021-11-15 04:23:30 South Indian Ocean [Sea]
16 km (9.7 mi) epicenter difference with USGS
INGV (Istituto Nazionale di Geofisica e Vulcanologia)
6.0 10 km (6.2 mi) (*) 2021-11-15 04:23:31 South Indian Ocean
3 km (1.8 mi) epicenter difference with USGS
GeoAu (Geoscience Australia )
(*) A depth given as 10 km often means that the the depth of the quake could not determined with sufficient accuracy.


Seismic station: Lobatse, Botswana (LBTB/GT network) | Distance from quake: 2794 km / 1736 mi | Show on map | Station Info
Seismic station Lobatse, Botswana: 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: 0.02-2.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User-reports for this quake (5)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Indian Ocean (1270.5 km NNW of epicenter) [Map] / Very weak shaking (MMI II)
Kolkata / not felt
Chipley Florida / Weak shaking (MMI III) / simple rolling (tilting sideways along one direction) / very short
Durban / not felt (reported through our app)
Duisburg / Weak shaking (MMI III) / single lateral shake / 5-10 s


[More info]

Recorded aftershocks, latest first (4 quakes)

Date and Time GMTMag
Nov 15, 2021 20:48
2 years ago

10 km
Indian OceanMore
Nov 15, 2021 07:12
2 years ago

10 km
Indian OceanMore
Nov 15, 2021 06:13
2 years ago

10 km
Indian OceanMore
Nov 15, 2021 04:52
2 years ago

10 km
Indian OceanMore

Earlier earthquakes in the same area

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