Information on the earthquake: moderate mag. 4.0 earthquake

Earthquake of medium magnitude 4.0 at 11 km depth

20 October 19:00 UTC: First to report: BMKG after 7 minutes.
20 October 19:20: Magnitude recalculated from 4.2 to 4.0.

Update Wed 20 October 2021, 19:06

Moderate 4.2 magnitude earthquake just reported 93 km south of Pelabuhanratu, Indonesia

Earthquake 4.2 21 October 01:53 (GMT +7)

Earthquake 4.2 21 October 01:53 (GMT +7)

The Indonesian Agency for Meteorology, Climatology and Geophysics reported a 4.2 magnitude earthquake in Indonesia near Pelabuhanratu in West Java just 13 minutes ago. The earthquake struck early in the morning of Thursday, October 21, 2021 at 1:53 a.m. local time at a shallow depth of 11 km. The exact magnitude, epicenter and depth of the quake could be revised in the next few hours or minutes, as seismologists review the data and refine their calculations, or when other agencies release their report.
Our monitoring service identified a second report from the Euro-Mediterranean Seismological Center (EMSC) which also listed the 4.2 magnitude earthquake.
Cities near the epicenter where the quake could have been felt as very weak tremors include Pelabuhanratu (population 43,000) located 93 km from the epicenter.

If you were or still are in this area during the earthquake help others with your comments and report it here.

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Earthquake data

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Date and hour : October 20, 2021 18:53:19 UTC –
Local time at epicenter: Thursday 21 October 2021 01:53 (GMT +7)
Size: 4
Depth: 11.0 km

Latitude / longitude of epicenter: 7.82 ° S / 106.48 ° E↗ (Indian Ocean, Indonesia)
Antipode: 7.82 ° N / 73.52 ° W↗
Nearest volcano: Perbakti (121 km / 75 mi)

Nearby towns and villages:
93 km (58 mi) south of Pelabuhanratu (pop: 43,000) -> Watch the earthquakes nearby!
112 km (69 mi) SSO of Sukabumi (pop: 276,400) -> Observe the earthquakes nearby!
120 km (75 mi) SSO of Cicurug (pop: 89,000) -> Watch the earthquakes nearby!
129 km (80 mi) SSO of Benevolent (pop: 91,800) -> Watch the earthquakes nearby!
141 km (87 mi) SSO of bogoleu (pop: 800,000) -> See earthquakes nearby!
143 km (89 mi) south of Ciampea (pop: 207,200) -> See nearby earthquakes!
144 km (90 mi) southwest of Soreang (pop: 150,900) -> Observe the earthquakes nearby!
159 km (99 mi) southwest of Bandung (pop: 1,699,700) -> See nearby earthquakes!
183 km (114 mi) SSO of Jakarta (pop: 8,540,100) -> Watch the earthquakes nearby!
302 km (188 mi) NNE of Flying Fish Cove (Christmas Island) (pop: 500) -> See nearby earthquakes!

Weather at the epicenter at the time of the earthquake:
Clouds covered 27.6 ° C (82 F), humidity: 81%, wind: 7 m / s (14 kts) from ESE

Main data source: BMKG (Meteorological, Climatological and Geophysical Agency of Indonesia)

Estimated energy released: 6.3 x 10ten joules (17.5 megawatt hours, equivalent to 15.1 tonnes of TNT) More info

If you felt this earthquake (or were near the epicenter), please share your experience and submit a short “I felt it” report! Other users would love to hear about it!
If you did NOT feel the earthquake although you are in the area, please report it! Your contribution is valuable to earthquake science, seismic risk analysis and mitigation efforts. You can use your device’s location or the map to show where you were during the earthquake. Thank you!

Data for the same earthquake reported by different agencies

Info: The more agencies report the same earthquake and publish similar data, the more confidence you can have in the data. It normally takes up to a few hours for the seismic parameters to be calculated with near optimum accuracy.

Mag. Depth Site Source
4.0 11 km Java, Indonesia BMKG
4.2 11 km JAVA, INDONESIA EMSC

Previous earthquakes in the same region

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