Moderate mag. 4.8 earthquake - Flores Sea, 52 km north of Ruteng, Indonesia, on 26 Apr 2:34 am (GMT +8) -
Moderate magnitude 4.8 earthquake at 16 km depth
25 Apr 18:40 UTC: First to report: BMKG after 6 minutes.
25 Apr 18:45: Magnitude recalculated from 5.0 to 4.9. Hypocenter depth recalculated from 11.0 to 12.0 km (from 6.8 to 7.5 mi). Epicenter location corrected by 3.3 km (2.1 mi) towards S.
25 Apr 18:50: Magnitude recalculated from 4.9 to 5.1. Hypocenter depth recalculated from 12.0 to 11.0 km (from 7.5 to 6.8 mi). Epicenter location corrected by 3.3 km (2.1 mi) towards N.
25 Apr 18:55: Magnitude recalculated from 5.1 to 4.8. Hypocenter depth recalculated from 11.0 to 16.0 km (from 6.8 to 9.9 mi). Epicenter location corrected by 6.7 km (4.1 mi) towards S.
Update Sun, 25 Apr 2021, 18:45Significant earthquake of magnitude 5.0 just reported 91 km northeast of Labuan Bajo, Indonesia
5.0 quake 26 Apr 2:34 am (GMT +8)
An earthquake of magnitude 5.0 occurred early morning on Monday 26 April 2021 at 2:34 am local time near Labuan Bajo, East Nusa Tenggara, Indonesia, as reported by Indonesia's Meteorology, Climatology, and Geophysical Agency.
According to preliminary data, the quake was located at a shallow depth of 11 km. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. 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.
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 Ruteng (pop. 34,600) located 58 km from the epicenter, and Labuan Bajo (pop. 188,700) 91 km away.
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
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Date & time: 25 Apr 2021 18:34:26 UTC -
Local time at epicenter:
26 Apr 2:34 am (GMT +8)
Depth: 16.0 km
Epicenter latitude / longitude: 8.17°S / 120.62°E
Nearest volcano: Ranakah
(58 km / 36 mi)
Nearby towns and cities:52 km (32 mi) NNE of Ruteng (Kabupaten Manggarai)
(pop: 34,600) --> See nearby quakes!88 km (55 mi) ENE of Labuan Bajo
(pop: 188,700) --> See nearby quakes!137 km (85 mi) WNW of Ende
(pop: 77,200) --> See nearby quakes!170 km (106 mi) NNE of Waingapu
(pop: 48,800) --> See nearby quakes!182 km (113 mi) WNW of Maumere
(pop: 47,600) --> See nearby quakes!211 km (131 mi) E of Bima
(pop: 67,000) --> See nearby quakes!241 km (150 mi) E of Dompu
(pop: 49,000) --> See nearby quakes!346 km (215 mi) SSE of Galesong
(pop: 83,100) --> See nearby quakes!361 km (224 mi) SSE of Makassar
(pop: 1,321,700) --> See nearby quakes!396 km (246 mi) WNW of Kupang
(pop: 282,400) --> See nearby quakes!75 km (47 mi) NW of Flores Island
(pop: 1,831,000) --> See nearby quakes!185 km (115 mi) NNE of Pulau Sumba Island
(pop: 686,100) --> See nearby quakes!
Weather at epicenter at time of quake:
Overcast Clouds 27.1°C
(81 F), humidity: 71%, wind: 2 m/s (4 kts) from SE
Primary data source: BMKG
(Meteorological, Climatological, and Geophysical Agency of Indonesia)
Estimated released energy: 1 x 1012
joules (278 megawatt hours, equivalent to 239 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.
|4.8||16 km||Flores Region, Indonesia||BMKG|
|4.7||10 km||Flores Region, Indonesia||GFZ|
|4.8||40 km||FLORES REGION, INDONESIA||EMSC|
|4.8||49 km||49 Km N of Ruteng, Indonesia||USGS|
User reports for this quake (3)
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Labuan Bajo (88.1 km WSW of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s : Woke up due to shaking. | 2 users found this interesting.
Nagekeo Regency, Boawae District (89.8 km SE of epicenter) [Map]
/ Light shaking (MMI IV) / rattling, vibrating / 20-30 s : About MMI III scale of earthquake | One user found this interesting. (reported through our app)
Mbay (84.4 km ESE of epicenter) [Map]
/ Light shaking (MMI IV) / rattling, vibrating / 15-20 s (reported through our app)
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