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Strong mag. 6.1 earthquake - Philippine Sea, 33 km southeast of Yilan, Taiwan, on Sunday, Oct 24, 2021 at 1:11 pm (GMT +8) -

Strong mag. 6.1 earthquake - Philippine Sea, 33 km southeast of Yilan, Taiwan, on Sunday, Oct 24, 2021 at 1:11 pm (GMT +8) Strong mag. 6.1 earthquake - Philippine Sea, 33 km southeast of Yilan, Taiwan, on Sunday, Oct 24, 2021 at 1:11 pm (GMT +8)

Strong magnitude 6.1 earthquake at 66 km depth

24 Oct 05:17 UTC: First to report: GFZ after 6 minutes.
24 Oct 05:19: Magnitude recalculated from 6.3 to 6.1. Hypocenter depth recalculated from 57.0 to 66.0 km (from 35 to 41 mi). Epicenter location corrected by 3.8 km (2.3 mi) towards NE.
Update Sun, 24 Oct 2021, 05:24

Magnitude 6.1 earthquake strikes near Yilan, Taiwan

6.1 quake 24 Oct 1:11 pm (GMT +8)
6.1 quake 24 Oct 1:11 pm (GMT +8)
An earthquake of magnitude 6.1 occurred around noon on Sunday, October 24th, 2021, at 1:11 pm local time near Yilan, Taiwan, as reported by the German Research Centre for Geosciences (GFZ).
According to preliminary data, the quake was located at a moderately shallow depth of 66 km. 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 France's Réseau National de Surveillance Sismique (RéNaSS) which listed the quake at magnitude 6.1 as well. Other agencies reporting the same quake include the European-Mediterranean Seismological Centre (EMSC) at magnitude 5.4, and the European-Mediterranean Seismological Centre (EMSC) at magnitude 6.5.
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.
Based on the preliminary seismic data, the quake was probably felt by many people in the area of the epicenter. It should not have caused significant damage, other than objects falling from shelves, broken windows, etc.
In Yilan (pop. 94,200) located 33 km from the epicenter, Hualien City (pop. 350,500) 63 km away, Taipeh (pop. 7,871,900) 72 km away, Banciao (pop. 543,300) 73 km away, Keelung (pop. 397,500) 73 km away, Daxi (pop. 84,500) 75 km away, Taoyuan City (pop. 402,000) 82 km away, Hsinchu (pop. 404,100) 99 km away, and Puli (pop. 86,400) 109 km away, the quake should have been felt as light shaking.
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 & timeOct 24, 2021 05:11:34 UTC -
Local time at epicenterSunday, Oct 24, 2021 at 1:11 pm (GMT +8)
StatusConfirmed
Magnitude6.1
Depth66.0 km
Epicenter latitude / longitude24.48°N / 121.88°E (Philippine Sea, Taiwan)
Antipode24.48°S / 58.12°W
Shaking intensityModerate shaking
Felt46 reports
Primary data sourceGFZ (German Research Centre for Geosciences)
Nearest volcanoKueishantao (41 km / 25 mi)
Nearby towns and cities33 km (21 mi) SSE of Yilan (pop: 94,200) | Show on map | Quakes nearby
63 km (39 mi) NNE of Hualien City (pop: 350,500) | Show on map | Quakes nearby
72 km (45 mi) SSE of Taipei (pop: 7,871,900) | Show on map | Quakes nearby
73 km (45 mi) SE of Banciao (pop: 543,300) | Show on map | Quakes nearby
73 km (46 mi) S of Keelung (pop: 397,500) | Show on map | Quakes nearby
75 km (46 mi) SE of Daxi (pop: 84,500) | Show on map | Quakes nearby
82 km (51 mi) SE of Taoyuan City (pop: 402,000) | Show on map | Quakes nearby
99 km (61 mi) ESE of Hsinchu (pop: 404,100) | Show on map | Quakes nearby
109 km (67 mi) ENE of Puli (pop: 86,400) | Show on map | Quakes nearby
262 km (163 mi) NE of Kaohsiung City (pop: 1,519,700) | Show on map | Quakes nearby
270 km (168 mi) SE of Matsu Island (pop: 4,000) | Show on map | Quakes nearby
355 km (220 mi) E of Kinmen Island (pop: 127,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 21.5°C (71 F), humidity: 92%, wind: 5 m/s (10 kts) from N
Estimated seismic energy released8.9 x 1013 joules (24.8 gigawatt hours, equivalent to 21301 tons of TNT or 1.3 atomic bombs!) | about seismic energy
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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.
Mag.DepthLocationSource
6.166 kmTaiwanGFZ
6.060 kmTAIWANEMSC
6.059 kmTaiwan: Near TaipeiRENASS
6.060 kmTaiwanBMKG
6.177 kmTaiwan [Sea]INGV
6.265 km21 Km SSE of Yilan, TaiwanUSGS
6.262 kmTaiwanGeoAu

Seismograms

Seismic station: Taipei, Taiwan (TATO/IU network) | Distance from quake: 67 km / 42 mi | Show on map | Station Info
Seismic station Taipei, Taiwan: 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. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (48)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Taipei daan / Moderate shaking (MMI V) / vertical swinging (up and down) / 15-20 s : Vertical more than horizontal enough to move the sofa scale of 5 | 19 users found this interesting. (reported through our app)  
Taipei Xinyi District (69 km NNW of epicenter) [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 20-30 s : 3rd floor. Woke me from a nap. Side to side shaking. We have been here a year, and this was the strongest and longest quake so far that we have felt. | 13 users found this interesting.  
Taipei / Moderate shaking (MMI V) / single vertical bump / 30-60 s : Felt a few small shakes to begin with and then about 10 seconds in there was a pretty big vertical bump. That was followed by the usual small shakes and rolling sensation for approximately 45 seconds | 10 users found this interesting.  
Taipeh (69.3 km NNW of epicenter) [Map] / Strong shaking (MMI VI) / horizontal (sideways) swinging / 20-30 s : taking a shower, I felt it start then intensify. girlfriend screamed in other room, held her til it ended. | 10 users found this interesting.  
Xinchuang New Taipei City (76.3 km NW of epicenter) [Map] / Moderate shaking (MMI V) / both vertical and horizontal swinging / 20-30 s : Moderate to strong shaking. We’re on the 5th floor of 5 story building. There was definite sideways dip and I was momentarily scared the building would fall that way. Also vertical movement. At first you think… OK this is a strong one… then Oh shit | 8 users found this interesting.  
Taichung (125.2 km WSW of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 20-30 s : Heard creaking, felt side to side motion, curtains moving, continued long enough felt the need to move to more secure location, no issues with walking. | 6 users found this interesting.  
Xiamen, China / Very weak shaking (MMI II) / horizontal (sideways) swinging / 20-30 s : I was lying in my bed and felt the shaking. First stonger for about 10 to 20 seconds than 2 shorter ones. | 6 users found this interesting.  
taipei / Moderate shaking (MMI V) / horizontal (sideways) swinging / 15-20 s : woke up took about 5 seconds to realise it was an earthquake,intensified for another 5 seconds then stopped,2 seconds later a lesser quake followed and lasted 5 seconds | 5 users found this interesting.  
Tianmu / Strong shaking (MMI VI) : Pictures falling. Water splashing out if dog dishes. | 6 users found this interesting.  
Taipei / Light shaking (MMI IV) / horizontal (sideways) swinging / 30-60 s : Back and forth shaking for 30-60 seconds. Much like a ship rolling on rough seas. | 6 users found this interesting.  
Taipei / Moderate shaking (MMI V) / vibration and rolling / 30-60 s : We were at the dinner table eating lunch. Right in the middle of our Yagar Schnitzel and Pork Knuckle we were rudely interrupted. Initial vibration then increase in frequency. Lasted app 10 seconds then wham! Severe jolt and building began saying moderate | 4 users found this interesting. (reported through our app)  
Taipei / Moderate shaking (MMI V) / horizontal (sideways) swinging / 30-60 s : I panick myself and go outside, but the others and neighboorhood no respond and stay at room | 5 users found this interesting.  
Taipei / Moderate shaking (MMI V) / horizontal (sideways) swinging / 15-20 s : Je rentrais des courses et ça c'est mis à trembler après un moment de surprise j'ai repris mon équilibre pour ma part c'est le tremblement le plus fort que j'ai ressenti | 3 users found this interesting.  
New Taipei city / Moderate shaking (MMI V) / single lateral shake / 1-2 minutes : Moderate shaking. Ceiling lights swinging. | 4 users found this interesting.  
Taipei Xinyi District (69 km NNW of epicenter) [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 20-30 s : 3rd floor. Woke me from a nap. Side to side shaking. We have been here a year, and this was the strongest and longest quake so far that we have felt.  
FUZHOU / Strong shaking (MMI VI) / rattling, vibrating / 1-2 minutes : Lasted longer thna usual and got more intense after 30 seconds | 2 users found this interesting.  
Taoyuan District Taoyuan City / Strong shaking (MMI VI) / 5-10 s : Strong shaking | 2 users found this interesting.  
Taipei (69.5 km NNW of epicenter) [Map] / Light shaking (MMI IV) / complex motion difficult to describe / 15-20 s
Banciao, New Taipei, Taipei (66 km NW of epicenter) [Map] / Light shaking (MMI IV) / vertical swinging (up and down) / 5-10 s
Taipei (69.8 km NNW of epicenter) [Map] / Strong shaking (MMI VI) / both vertical and horizontal swinging / 15-20 s
taipei 114, Tiding blvd (0.8 km NNE of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / 5-10 s
near Yilan (23.5 km NW of epicenter) [Map] / Light shaking (MMI IV) / vertical swinging (up and down) / 20-30 s
Wow Happy hotel Taipei (71.9 km NNW of epicenter) [Map] / Strong shaking (MMI VI) / both vertical and horizontal swinging / 10-15 s
Taichung (132.3 km WSW of epicenter) [Map] / Light shaking (MMI IV)
Nantong (846.9 km N of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 30-60 s
Banciao, New Taipei, Taipei (72.4 km NW of epicenter) [Map] / Moderate shaking (MMI V) / both vertical and horizontal swinging / 30-60 s
Fuzhou (311 km NW of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 1-2 minutes
Taipeh (67.1 km NNW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Taipei (70.1 km NNW of epicenter) [Map] / Moderate shaking (MMI V) / vertical swinging (up and down)
Taipeh (68.5 km NNW of epicenter) [Map] / Moderate shaking (MMI V) / both vertical and horizontal swinging / 5-10 s
New Taipei City / Light shaking (MMI IV) / rattling, vibrating / 5-10 s : The house was vibrating and shaking for maybe 10 seconds. (reported through our app)  
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Aftershocks

[More info]

Recorded aftershocks, latest first (13 quakes)

Date and timeMag
Depth
LocationDetails
Apr 13, 2022 09:28
33 weeks ago
4.1

14 km
Philippine Sea, 37 km SE of Yilan, TaiwanMore
Mar 6, 2022 03:51
39 weeks ago
4.5

111 km
Philippine Sea, 50 km E of Yilan, TaiwanMore
Feb 11, 2022 16:43
42 weeks ago - felt
5.5

10 km
Philippine Sea, 69 km E of Hualien City, TaiwanMore
Feb 7, 2022 10:58
43 weeks ago - felt
5.1

30 km
Philippine Sea, 50 km SE of Yilan, TaiwanMore
Feb 6, 2022 23:52
43 weeks ago
4.2

11 km
28 km S of Yilan, TaiwanMore
Jan 25, 2022 14:35
44 weeks ago - felt
4.5

64 km
Philippine Sea, 66 km SE of Taipei, TaiwanMore
Jan 23, 2022 08:22
45 weeks ago
4.0

13 km
Philippine Sea, 77 km SE of Taipei, TaiwanMore
Jan 16, 2022 08:15
46 weeks ago - felt
5.2

51 km
Philippine Sea, 121 km SE of Taipei, TaiwanMore
Jan 3, 2022 23:17
48 weeks ago - felt
5.0

27 km
Philippine Sea, 131 km SE of Taipei, TaiwanMore
Jan 3, 2022 09:46
48 weeks ago - felt
6.2

29 km
Philippine Sea, 137 km SE of Taipei, TaiwanMore
Dec 6, 2021 13:05
52 weeks ago - felt
4.7

105 km
Philippine Sea, 59 km E of Taipei, TaiwanMore
Nov 17, 2021 02:25
1 year 2 weeks ago
4.9

10 km
Philippine Sea, 81 km SE of Taipei, TaiwanMore
Nov 14, 2021 13:05
1 year 3 weeks ago - felt
4.9

74 km
Philippine Sea, 33 km SE of Yilan, TaiwanMore

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