Moderate mag. 4.7 earthquake - North Pacific Ocean, 63 km northeast of Iwaki, Fukushima, Japan, on Saturday, 23 Jan 2021 1:03 am (GMT +9) -

Moderate mag. 4.7 earthquake - North Pacific Ocean, 63 km northeast of Iwaki, Fukushima, Japan, on Saturday, 23 Jan 2021 1:03 am (GMT +9)

Moderate magnitude 4.7 earthquake at 12 km depth

22 Jan 16:16 UTC: First to report: EMSC after 12 minutes.
22 Jan 17:40: Magnitude recalculated from 4.6 to 4.7. Hypocenter depth recalculated from 30.0 to 32.0 km (from 18.6 to 19.9 mi). Epicenter location corrected by 2.4 km (1.5 mi) towards NNW.
22 Jan 18:01: Hypocenter depth recalculated from 32.0 to 26.0 km (from 19.9 to 16.2 mi). Epicenter location corrected by 3.5 km (2.1 mi) towards SSE.
22 Jan 18:02: Hypocenter depth recalculated from 26.0 to 12.0 km (from 16.2 to 7.5 mi). Epicenter location corrected by 10.4 km (6.5 mi) towards WNW.
Update Fri, 22 Jan 2021, 16:21
Light magnitude 4.6 quake hits 69 km northeast of Iwaki, Japan early morning
4.6 quake 23 Jan 1:04 am (GMT +9)
4.6 quake 23 Jan 1:04 am (GMT +9)
Just 17 minutes ago, a 4.6-magnitude earthquake struck near Iwaki, Iwaki-shi, Fukushima, Japan. The tremor was recorded early morning on Saturday 23 January 2021 at 1:04 am local time, at a moderately shallow depth of 30 km below the surface.
The event was filed by the European-Mediterranean Seismological Centre (EMSC), the first seismological agency to report it.
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 Namie (pop. 21,900) located 57 km from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Iwaki (pop. 357,300) located 69 km from the epicenter, Funehikimachi-funehiki (pop. 23,500) 92 km away, Kitaibaraki (pop. 50,800) 95 km away, Miharu (pop. 19,700) 100 km away, Kōriyama (pop. 340,600) 108 km away, Fukushima (pop. 294,200) 112 km away, and Hitachi (pop. 186,300) 115 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: 22 Jan 2021 16:03:56 UTC -
Local time at epicenter: Saturday, 23 Jan 2021 1:03 am (GMT +9)
Magnitude: 4.7
Depth: 12.0 km
Epicenter latitude / longitude: 37.34°N / 141.5°E (North Pacific Ocean, Japan)
Nearest volcano: Adatara (122 km / 76 mi)
Nearby towns and cities:
47 km (29 mi) ESE of Namie (Futaba-gun) (pop: 21,900) --> See nearby quakes!
63 km (39 mi) ENE of Iwaki (pop: 357,300) --> See nearby quakes!
91 km (56 mi) NE of Kitaibaraki (pop: 50,800) --> See nearby quakes!
95 km (59 mi) SE of Kakuda (pop: 33,200) --> See nearby quakes!
96 km (60 mi) SE of Watari (pop: 36,300) --> See nearby quakes!
98 km (61 mi) ESE of Nihommatsu (pop: 36,300) --> See nearby quakes!
99 km (61 mi) E of Kōriyama (pop: 340,600) --> See nearby quakes!
99 km (62 mi) E of Sukagawa (pop: 68,800) --> See nearby quakes!
229 km (142 mi) NE of Saitama (pop: 1,193,400) --> See nearby quakes!
245 km (152 mi) NE of Tokyo (pop: 8,336,600) --> See nearby quakes!
Weather at epicenter at time of quake:
Scattered Clouds 9°C (48 F), humidity: 72%, wind: 8 m/s (15 kts) from N
Primary data source: EMSC (European-Mediterranean Seismological Centre)
Estimated released energy: 7.1 x 1011 joules (197 megawatt hours, equivalent to 169 tons of TNT) More info
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If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
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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.
MagnitudeDepthLocationSource
M 4.712 kmNEAR EAST COAST OF HONSHU, JAPANEMSC
M 5.224 kmNear East Coast of Honshu, JapanGeoAu
M 4.732 km55 Km ESE of Namie, JapanUSGS
M 4.726 kmNear East Coast of Honshu, JapanGFZ

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
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Earlier earthquakes in the same area since 1900


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