Moderate mag. 5.0 earthquake - 4.7 km west of Tsukuba, Ibaraki, Japan, on Thursday, Dec 2, 2021 1:58 am (GMT +9) -

Moderate mag. 5.0 earthquake - 4.7 km west of Tsukuba, Ibaraki, Japan, on Thursday, Dec 2, 2021 1:58 am (GMT +9)

Moderate magnitude 5.0 earthquake at 68 km depth

1 Dec 17:01 UTC: First to report: VolcanoDiscovery after 2 minutes.
1 Dec 17:05: Now using data updates from NIED
1 Dec 17:26: Now using data updates from USGS
Update Wed, 1 Dec 2021, 17:09
Magnitude 5.3 earthquake strikes near Tsukuba, Tsukuba-shi, Ibaraki, Japan
5.3 quake 2 Dec 1:58 am (GMT +9)
5.3 quake 2 Dec 1:58 am (GMT +9)
A moderately shallow magnitude 5.3 earthquake was reported early morning near Tsukuba, Tsukuba-shi, Ibaraki, Japan.
According to Japan's National Research Institute for Earth Science and Disaster Resilience (NIED), the quake hit on Thursday, December 2nd, 2021, at 1:58 am local time at a moderately shallow depth of 64.9 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.
A second report was later issued by the German Research Centre for Geosciences (GFZ), which listed it as a magnitude 5.1 earthquake.
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 Shimodate (pop. 63,700) located 9 km from the epicenter, Tsukuba (pop. 175,600) 10 km away, Yūki (pop. 51,600) 13 km away, Oyama (pop. 159,900) 19 km away, Iwai (pop. 42,500) 21 km away, Koga (pop. 58,000) 25 km away, Ushiku (pop. 80,000) 31 km away, Mito (pop. 246,500) 44 km away, Tokyo (pop. 8,336,600) 65 km away, and Yokohama (pop. 3,574,400) 93 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

Date & time: Dec 1, 2021 16:58:38 UTC -
Local time at epicenter: Thursday, Dec 2, 2021 1:58 am (GMT +9)
Magnitude: 5
Depth: 68.1 km
Epicenter latitude / longitude: 36.2037°N / 140.0476°E (Tsukuba-shi, Ibaraki, Japan)
Antipode: 36.204°S / 39.952°W
Nearest volcano: Nantai (79 km / 49 mi)
Nearby towns and cities:
5 km (3 mi) W of Tsukuba (pop: 175,600) --> See nearby quakes!
12 km (8 mi) SSE of Shimodate (pop: 63,700) --> See nearby quakes!
18 km (11 mi) SE of Yūki (pop: 51,600) --> See nearby quakes!
20 km (12 mi) W of Ishioka (pop: 52,300) --> See nearby quakes!
20 km (13 mi) NNW of Naka (pop: 46,800) --> See nearby quakes!
27 km (17 mi) NNW of Ushiku (pop: 80,000) --> See nearby quakes!
34 km (21 mi) N of Toride (pop: 80,700) --> See nearby quakes!
40 km (25 mi) WSW of Mito (pop: 246,500) --> See nearby quakes!
66 km (41 mi) NNE of Tokyo (pop: 8,336,600) --> See nearby quakes!
93 km (58 mi) NNE of Yokohama (Kanagawa) (pop: 3,574,400) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 8.2°C (47 F), humidity: 39%, wind: 6 m/s (11 kts) from NW
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2 x 1012 joules (554 megawatt hours, equivalent to 477 tons of TNT) | 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
5.068 km4 Km W of Tsukuba, JapanUSGS
5.164 kmEastern Honshu, JapanGFZ
5.080 kmEASTERN HONSHU, JAPANEMSC
5.068 kmEastern Honshu, JapanRaspberryShake
5.185 kmJapan: Near TokyoRENASS
5.365 kmNear Tokyo, Tokyo, JapanNIED
5.173 kmEastern Honshu, JapanGeoAu

User reports for this quake (64)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Tomisato (57.7 km SSE of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 20-30 s : The shaking woke me up as my bed was swinging sideways. I was at the 9th floor of a hotel. 8 out 10 of my colleagues felt it. It subdued after about 25 seconds.  
Noda-Shi / Light shaking (MMI IV) / rattling, vibrating / 15-20 s : I Felt my Bed Was Moving Until I Realized It Was An Earthquake My Mom Was Sleeping | 2 users found this interesting.  
Shinagawa (71.5 km SSW of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 10-15 s : Light shaking | One user found this interesting. (reported through our app)  
yokosuka japan (106.1 km SSW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s : I was in bed, and my entire room and bed was shaking. | One user found this interesting.  
Saitama (49.4 km SW of epicenter) [Map] / Light shaking (MMI IV) : 1 minute | One user found this interesting.  
On a mountain top it Tokigawa Village (Saitama) / Moderate shaking (MMI V) / both vertical and horizontal swinging / 20-30 s : I was camping out, so directly on the ground, on a mountain in Okumusahi. Some gentle shaking then one slightly intense shake.The epicenter in the Tsukuba area was very visible in the morning about 100k away  
portland oregon / Weak shaking (MMI III) / single vertical bump / very short : light vibration like someone lit a stick of tnt 23 foot under the ground, an the air got scared an that distress smell up to now but there was a very light hum like feeling on the floor for a few seconds  
Нарита, Narita-shi, Chiba-ken (54.7 km SSE of epicenter) [Map] / Moderate shaking (MMI V) / 5-10 s : Yes, I felt it quite strong | One user found this interesting.  
Wako, Saitama (62.6 km SW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s : In bed and things were shaking side to side | One user found this interesting.  
Tokyo (65.4 km SSW of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 5-10 s : Woke up and bed was shaking sideways | One user found this interesting.  
Narita (54.1 km SSE of epicenter) [Map] / Light shaking (MMI IV) / vibration and rolling
Narita Airport (56 km SE of epicenter) [Map] / Weak shaking (MMI III) / single vertical bump / 2-5 s : Short shaking of the hotel (12th floor)  
Koto-ku (62.9 km SSW of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s
near Kawasaki (82.2 km SSW of epicenter) [Map] / Light shaking (MMI IV) / vertical swinging (up and down) / 2-5 s
near Kawasaki (82.2 km SSW of epicenter) [Map] / Light shaking (MMI IV) / vertical swinging (up and down) / 2-5 s
Meguro (73 km SSW of epicenter) [Map] / Light shaking (MMI IV) / single vertical bump / 1-2 s : Two bumps.  
Nishigaoka, Kita city (56.9 km SSW of epicenter) [Map] / Light shaking (MMI IV) / complex motion difficult to describe / 5-10 s
Nishitokyo (69.2 km SW of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 10-15 s
Tokyo minato city (5.4 km W of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 10-15 s : Light shaking  
Нарита, Narita-shi, Chiba-ken (54.3 km SSE of epicenter) [Map] / not felt / 2-5 s
Hôtel Hilton Shinjuku Tokyo (65.3 km SSW of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 30-60 s
Yokohama, Kanagawa (94 km SSW of epicenter) [Map] / Light shaking (MMI IV) / vibration and rolling / 15-20 s
Tokyo, japan (60.9 km SSW of epicenter) [Map] / Light shaking (MMI IV) / 30-60 s
Tokyo (64 km SSW of epicenter) [Map] / Light shaking (MMI IV) / simple rolling (tilting sideways along one direction) / 15-20 s : I was sleeping  
Hotel Nikko Narita, 9th floor / Very weak shaking (MMI II) / horizontal (sideways) swinging / 5-10 s : Gradual increase in shaking over several seconds to a short crescendo, and then 5+ seconds of reverberations.  
Narit (58.2 km SSE of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / 2-5 s
Adachi-ku (55 km SSW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / several minutes
Tokyo (67.4 km SSW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 5-10 s
Tokyo (65.3 km SSW of epicenter) [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 15-20 s
Chiba (53.7 km S of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 5-10 s
Utsunomiya, Tochigi (45.8 km NNW of epicenter) [Map] / Light shaking (MMI IV) / 5-10 s
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Aftershocks

[More info]

Recorded aftershocks, latest first (15 quakes)

Date and timeMag
Depth
LocationDetails
Jan 10, 2022 08:22
5 days ago
2.8

74 km
Chikusei-shi, Ibaraki, 76 km NE of Tokyo, JapanMore
Jan 9, 2022 02:33
6 days ago
2.8

68 km
Jōsō-shi, Ibaraki, 56 km NE of Tokyo, JapanMore
Jan 6, 2022 08:33
9 days ago
3.7

108 km
Chikusei-shi, Ibaraki, 74 km N of Tokyo, JapanMore
Jan 6, 2022 07:42
9 days ago
2.7

63 km
Chikusei-shi, Ibaraki, 64 km NE of Tokyo, JapanMore
Jan 5, 2022 12:34
10 days ago - felt
4.4

58 km
Tsukuba-shi, Ibaraki, 57 km NE of Tokyo, JapanMore
Jan 5, 2022 11:29
10 days ago
2.6

69 km
Jōsō-shi, Ibaraki, 56 km NE of Tokyo, JapanMore
Dec 14, 2021 14:20
5 weeks ago
2.6

69 km
9.7 km SW of Tsukuba, Ibaraki, JapanMore
Dec 13, 2021 02:40
5 weeks ago
2.8

64 km
Shimotsuma-shi, 10.2 km W of Tsukuba, Ibaraki, JapanMore
Dec 12, 2021 13:36
5 weeks ago
3.0

45 km
2.5 km NE of Iwai, Bandō-shi, Ibaraki, JapanMore
Dec 12, 2021 12:22
5 weeks ago
2.5

52 km
Shimotsuma-shi, 6.5 km W of Tsukuba, Ibaraki, JapanMore
Dec 10, 2021 08:26
5 weeks ago
2.8

70 km
Shimotsuma-shi, 8.7 km SW of Tsukuba, Ibaraki, JapanMore
Dec 10, 2021 02:56
5 weeks ago
2.5

115 km
Yūki Shi, Ibaraki, 10 km E of Oyama, Prefectura de Tochigi, JapanMore
Dec 4, 2021 23:22
6 weeks ago
2.8

67 km
1.2 km W of Tsukuba, Ibaraki, JapanMore
Dec 3, 2021 21:43
6 weeks ago
2.5

64 km
Chikusei-shi, 9 km W of Tsukuba, Ibaraki, JapanMore
Dec 1, 2021 23:58
6 weeks ago
3.7

64 km
Chikusei-shi, 9.8 km W of Tsukuba, Ibaraki, JapanMore

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