Light mag. 4.4 earthquake - 3 km east of Yotsukaidō, Chiba, Japan, on Friday, 22 Jan 2021 7:04 am (GMT +9) -

Light mag. 4.4 earthquake - 3 km east of Yotsukaidō, Chiba, Japan, on Friday, 22 Jan 2021 7:04 am (GMT +9)

Light magnitude 4.4 earthquake at 68 km depth

21 Jan 22:11 UTC: First to report: EMSC after 7 minutes.
21 Jan 23:03: Magnitude recalculated from 3.8 to 4.4. Hypocenter depth recalculated from 70.0 to 68.0 km (from 43 to 42 mi). Epicenter location corrected by 5.6 km (3.5 mi) towards S.
Date & time: 21 Jan 2021 22:04:24 UTC -
Local time at epicenter: Friday, 22 Jan 2021 7:04 am (GMT +9)
Magnitude: 4.4
Depth: 68.0 km
Epicenter latitude / longitude: 35.65°N / 140.2°E (Yotsukaidō-shi, Chiba, Japan)
Nearest volcano: Hakone (119 km / 74 mi)
Nearby towns and cities:
3 km (2 mi) E of Yotsukaidō (pop: 86,700) --> See nearby quakes!
8 km (5 mi) SSW of Sakura (pop: 182,500) --> See nearby quakes!
9 km (6 mi) NE of Chiba (pop: 919,700) --> See nearby quakes!
11 km (7 mi) W of Yachimata (pop: 83,300) --> See nearby quakes!
18 km (11 mi) SW of Narita (pop: 100,600) --> See nearby quakes!
18 km (11 mi) NE of Ichihara (pop: 283,500) --> See nearby quakes!
19 km (12 mi) NW of Tōgane (pop: 66,300) --> See nearby quakes!
20 km (13 mi) ESE of Funabashi (pop: 560,700) --> See nearby quakes!
46 km (29 mi) E of Tokyo (pop: 8,336,600) --> See nearby quakes!
55 km (34 mi) ENE of Yokohama (Kanagawa) (pop: 3,574,400) --> See nearby quakes!
Weather at epicenter at time of quake:
Scattered Clouds 2.4°C (36 F), humidity: 86%, wind: 2 m/s (3 kts) from NW
Primary data source: EMSC (European-Mediterranean Seismological Centre)
Estimated released energy: 2.5 x 1011 joules (69.8 megawatt hours, equivalent to 60 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.
MagnitudeDepthLocationSource
M 4.468 kmNEAR EAST COAST OF HONSHU, JAPANEMSC
M 4.170 kmCENTRAL CHIBA PREF, JapanNIED
M 4.468 km3 Km E of Yotsukaidō, JapanUSGS
M 4.571 kmNear East Coast of Honshu, JapanGFZ

User reports for this quake (2)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
64.5 km SW of epicenter [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s
55.9 km W of epicenter [Map] / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s
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Earlier earthquakes in the same area since 1900


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