Light mag. 4.0 earthquake - North Pacific Ocean, 59 km east of Namie, Futaba-gun, Fukushima, Japan, on Apr 18, 2021 10:00:58.59 -

This quake was likely an aftershock of the 7.0 quake 16 km northeast of Ishinomaki, Miyagi, Japan, 20 Mar 2021 6:09 pm (GMT +9), which had occurred 4 weeks earlier.
Light mag. 4.0 earthquake - North Pacific Ocean, 59 km east of Namie, Futaba-gun, Fukushima, Japan, on Apr 18, 2021 10:00:58.59

Light magnitude 4.0 earthquake at 44 km depth

18 Apr 01:07 UTC: First to report: NIED after 6 minutes.
Date & time: 18 Apr 2021 01:00:58 UTC -
Local time at epicenter: Apr 18, 2021 10:00:58.59
Magnitude: 4
Depth: 44.2 km
Epicenter latitude / longitude: 37.608°N / 141.654°E (North Pacific Ocean, Japan)
Nearest volcano: Adatara (121 km / 75 mi)
Nearby towns and cities:
59 km (37 mi) ENE of Namie (Futaba-gun) (pop: 21,900) --> See nearby quakes!
85 km (53 mi) ESE of Watari (pop: 36,300) --> See nearby quakes!
88 km (54 mi) ESE of Kakuda (pop: 33,200) --> See nearby quakes!
89 km (55 mi) SE of Iwanuma (pop: 42,400) --> See nearby quakes!
92 km (57 mi) NE of Iwaki (pop: 357,300) --> See nearby quakes!
95 km (59 mi) SSE of Ishinomaki (pop: 117,200) --> See nearby quakes!
96 km (60 mi) SE of Shiogama (pop: 59,500) --> See nearby quakes!
100 km (62 mi) SE of Rifu (pop: 35,000) --> See nearby quakes!
260 km (161 mi) NE of Saitama (pop: 1,193,400) --> See nearby quakes!
276 km (172 mi) NE of Tokyo (pop: 8,336,600) --> See nearby quakes!
Weather at epicenter at time of quake:
Overcast Clouds 12.4°C (54 F), humidity: 68%, wind: 9 m/s (17 kts) from WNW
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
4.044 kmE OFF FUKUSHIMA PREF, JapanNIED
4.150 kmNEAR EAST COAST OF HONSHU, JAPANEMSC

User reports for this quake (2)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
230.5 km SW of epicenter [Map] / Weak shaking (MMI III) / single lateral shake / 2-5 s (reported through our app)
261.6 km SSW of epicenter [Map] / Light shaking (MMI IV) / 15-20 s (reported through our app)
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