Light mag. 4.0 earthquake - North Pacific Ocean, 48 km east of Iwaki, Fukushima, Japan, on Wednesday, Oct 27, 2021 3:27 am (GMT +9) -

Light mag. 4.0 earthquake - North Pacific Ocean, 48 km east of Iwaki, Fukushima, Japan, on Wednesday, Oct 27, 2021 3:27 am (GMT +9)

Light magnitude 4.0 earthquake at 49 km depth

26 Oct 18:34 UTC: First to report: NIED after 7 minutes.
Update Tue, 26 Oct 2021, 18:39
Moderate earthquake of magnitude 4.0 just reported 48 km northeast of Iwaki, Japan
4.0 quake 27 Oct 3:27 am (GMT +9)
4.0 quake 27 Oct 3:27 am (GMT +9)
An earthquake of magnitude 4.0 occurred early morning on Wednesday, October 27th, 2021, at 3:27 am local time near Iwaki, Iwaki-shi, Fukushima, Japan, as reported by Japan's National Research Institute for Earth Science and Disaster Resilience (NIED).
According to preliminary data, the quake was located at a moderately shallow depth of 48.6 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 the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 4.2.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Namie (pop. 21,900) located 47 km from the epicenter, Iwaki (pop. 357,300) 48 km away, Kitaibaraki (pop. 50,800) 73 km away, Funehikimachi-funehiki (pop. 23,500) 77 km away, Takahagi (pop. 33,600) 80 km away, Sukagawa (pop. 68,800) 90 km away, and Kōriyama (pop. 340,600) 92 km away. In Hitachi (pop. 186,300, 93 km away), the quake was probably not felt.

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Earthquake data

Date & time: Oct 26, 2021 18:27:09 UTC -
Local time at epicenter: Wednesday, Oct 27, 2021 3:27 am (GMT +9)
Magnitude: 4
Depth: 48.6 km
Epicenter latitude / longitude: 37.192°N / 141.391°E (North Pacific Ocean, Japan)
Antipode: 37.192°S / 38.609°W
Nearest volcano: Adatara (110 km / 68 mi)
Nearby towns and cities:
47 km (29 mi) SE of Namie (Futaba-gun) (pop: 21,900) --> See nearby quakes!
48 km (30 mi) ENE of Iwaki (pop: 357,300) --> See nearby quakes!
73 km (45 mi) NE of Kitaibaraki (pop: 50,800) --> See nearby quakes!
77 km (48 mi) ESE of Funehikimachi-funehiki (Tamura) (pop: 23,500) --> See nearby quakes!
80 km (50 mi) NE of Takahagi (pop: 33,600) --> See nearby quakes!
90 km (56 mi) E of Sukagawa (pop: 68,800) --> See nearby quakes!
92 km (57 mi) ESE of Kōriyama (pop: 340,600) --> See nearby quakes!
93 km (58 mi) NE of Hitachi (pop: 186,300) --> See nearby quakes!
128 km (80 mi) SSE of Sendai (pop: 1,063,100) --> See nearby quakes!
226 km (140 mi) NE of Tokyo (pop: 8,336,600) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 9°C (48 F), humidity: 70%, wind: 3 m/s (6 kts) from SW
Primary data source: NIED (National Research Institute for Earth Science and Disaster Resilience)
Estimated released energy: 6.3 x 1010 joules (17.5 megawatt hours, equivalent to 15.1 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.
Mag.DepthLocationSource
4.049 kmJapan: E OFF FUKUSHIMA PREFNIED
4.240 kmNEAR EAST COAST OF HONSHU, JAPANEMSC

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

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