Quake info: Moderate mag. 4.6 earthquake – Philippines Sea, 85 km southeast of Taipei, Taiwan, on Thursday, 4 Mar 2021 11:24 pm (GMT +9)

Moderate magnitude 4.6 earthquake at 10 km depth

4 Mar 14:33 UTC: First to report: EMSC after 9 minutes.
4 Mar 15:55: Magnitude recalculated from 4.7 to 4.6. Hypocenter depth recalculated from 11.0 to 10.0 km (from 6.8 to 6.2 mi). Epicenter location corrected by 10 km (6.2 mi) towards S.

Update Thu, 4 Mar 2021, 14:39

Moderate 4.7 quake hits near Taipei, Taipei City, Taiwan

4.7 quake 4 Mar 11:24 pm (GMT +9)

4.7 quake 4 Mar 11:24 pm (GMT +9)

An earthquake of magnitude 4.7 occurred only 14 minutes ago 81 km southeast of Taipei, Taiwan, the European-Mediterranean Seismological Centre (EMSC) reported.
The quake hit at a shallow depth of 11 km beneath the epicenter near Taipei, Taipei City, Taiwan, late at night on Thursday 4 March 2021 at 11:24 pm local time. 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 Yilan (pop. 94,200) located 53 km from the epicenter, Keelung (pop. 397,500) 67 km away, and Taipei (pop. 7,871,900) 81 km away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Banqiao (pop. 543,300) located 86 km from the epicenter, Daxi (pop. 84,500) 101 km away, Taoyuan City (pop. 402,000) 102 km away, and Hualien City (pop. 350,500) 113 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 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 data:

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Date & time: 4 Mar 2021 14:24:58 UTC –
Local time at epicenter: Thursday, 4 Mar 2021 11:24 pm (GMT +9)
Magnitude: 4.6
Depth: 10.0 km
Epicenter latitude / longitude: 24.69°N / 122.28°E (
Philippines Sea, Taiwan)
Nearest volcano: Kueishantao (40 km / 25 mi)
Nearby towns and cities:
54 km (33 mi) E of Yilan (pop: 94,200) –> See nearby quakes!
73 km (45 mi) SE of Keelung (pop: 397,500) –> See nearby quakes!
85 km (53 mi) ESE of Taipei (pop: 7,871,900) –> See nearby quakes!
90 km (56 mi) ESE of Banqiao (pop: 543,300) –> See nearby quakes!
102 km (64 mi) E of Daxi (pop: 84,500) –> See nearby quakes!
105 km (65 mi) NE of Hualien City (pop: 350,500) –> See nearby quakes!
105 km (65 mi) ESE of Taoyuan City (pop: 402,000) –> See nearby quakes!
133 km (83 mi) E of Hsin-chu (pop: 404,100) –> See nearby quakes!
155 km (96 mi) ENE of Puli (pop: 86,400) –> See nearby quakes!
306 km (190 mi) NE of Kaohsiung City (pop: 1,519,700) –> See nearby quakes!
76 km (48 mi) WNW of Yonaguni Island (pop: 1,680) –> See nearby quakes!
286 km (178 mi) SE of Matsu Island (pop: 4,000) –> See nearby quakes!

Weather at epicenter at time of quake:
Overcast Clouds 20°C (68 F), humidity: 99%, wind: 7 m/s (14 kts) from N

Primary data source: EMSC (European-Mediterranean Seismological Centre)
Estimated released energy: 5 x 1011 joules (139 megawatt hours, equivalent to 120 tons of TNT) More info

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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.

Magnitude Depth Location Source
M 4.3 10 km 台湾宜兰县海域, Taiwan CEIC
M 4.6 10 km 53 Km E of Yilan, Taiwan USGS

User reports for this quake (1)

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