Light mag. 4.4 earthquake - North Pacific Ocean, 46 km east of Namie, Futaba-gun, Fukushima, Japan, on Tuesday, 23 Feb 2021 6:22 am (GMT +9) -
This quake was likely an aftershock of the 7.1 quake North Pacific Ocean, 88 km southeast of Sendai, Miyagi, Japan, 13 Feb 2021 11:07 pm (GMT +9), which had occurred 9 days earlier.
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Light magnitude 4.4 earthquake at 60 km depth
22 Feb 21:31 UTC: First to report: EMSC after 8 minutes.
22 Feb 22:59: Magnitude recalculated from 4.3 to 4.4. Hypocenter depth recalculated from 50.0 to 60.0 km (from 31 to 37 mi). Epicenter location corrected by 6.6 km (4.1 mi) towards WSW.
22 Feb 22:59: Magnitude recalculated from 4.3 to 4.4. Hypocenter depth recalculated from 50.0 to 60.0 km (from 31 to 37 mi). Epicenter location corrected by 6.6 km (4.1 mi) towards WSW.
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Local time at epicenter: Tuesday, 23 Feb 2021 6:22 am (GMT +9)
Magnitude: 4.4
Depth: 60.0 km
Epicenter latitude / longitude: 37.58°N / 141.43°E
(North Pacific Ocean, Japan)Nearest volcano: Adatara (107 km / 66 mi)
Nearby towns and cities:
39 km (24 mi) ENE of Namie (Futaba-gun) (pop: 21,900) --> See nearby quakes!
69 km (43 mi) ESE of Marumori (Igu District) (pop: 16,800) --> See nearby quakes!
76 km (47 mi) NE of Iwaki (pop: 357,300) --> See nearby quakes!
87 km (54 mi) ESE of Fukushima (pop: 294,200) --> See nearby quakes!
89 km (55 mi) SSE of Shiogama (pop: 59,500) --> See nearby quakes!
91 km (57 mi) SE of Sendai (pop: 1,063,100) --> See nearby quakes!
94 km (58 mi) S of Ishinomaki (pop: 117,200) --> See nearby quakes!
95 km (59 mi) ENE of Kōriyama (pop: 340,600) --> See nearby quakes!
244 km (152 mi) NE of Saitama (pop: 1,193,400) --> See nearby quakes!
261 km (162 mi) NE of Tokyo (pop: 8,336,600) --> See nearby quakes!
Weather at epicenter at time of quake:
Broken Clouds
7.8°C (46 F), humidity: 61%, wind: 16 m/s (30 kts) from NW
Primary data source: EMSC (European-Mediterranean Seismological Centre)Broken Clouds
7.8°C (46 F), humidity: 61%, wind: 16 m/s (30 kts) from NWEstimated released energy: 2.5 x 1011 joules (69.8 megawatt hours, equivalent to 60 tons of TNT) More info
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Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!
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.
| Magnitude | Depth | Location | Source |
| M 4.4 | 60 km | NEAR EAST COAST OF HONSHU, JAPAN | EMSC |
| M 4.2 | 48 km | E OFF FUKUSHIMA PREF, Japan | NIED |
| M 4.4 | 51 km | 46 Km ENE of Namie, Japan | USGS |
User reports for this quake
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Earlier earthquakes in the same area
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