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Light mag. 4.2 earthquake - Chiba, 32 km east of Tokyo, Japan, on Tuesday, May 24, 2022 at 12:43 pm (GMT +9) -

Light mag. 4.2 earthquake - Chiba, 32 km east of Tokyo, Japan, on Tuesday, May 24, 2022 at 12:43 pm (GMT +9) Light mag. 4.2 earthquake - Chiba, 32 km east of Tokyo, Japan, on Tuesday, May 24, 2022 at 12:43 pm (GMT +9)

Light magnitude 4.2 earthquake at 33 km depth

24 May 03:46 UTC: First to report: VolcanoDiscovery after 3 minutes.
24 May 03:50: Now using data updates from NIED
24 May 04:06: Now using data updates from USGS
25 May 01:58: Hypocenter depth recalculated from 35.2 to 32.8 km (from 22 to 20 mi). Epicenter location corrected by 0.9 km (0.6 mi) towards E.
Update Tue, 24 May 2022, 04:09
Magnitude 4.2 earthquake strikes near Tokyo, Japan
4.2 quake Chiba, 31 km east of Tokyo, Japan, May 24, 2022 12:43 pm (GMT +9)
4.2 quake Chiba, 31 km east of Tokyo, Japan, May 24, 2022 12:43 pm (GMT +9)
The United States Geological Survey reported a magnitude 4.2 quake in Japan near Tokyo, only 26 minutes ago. The earthquake hit around noon on Tuesday, May 24th, 2022, at 12:43 pm local time at a moderately shallow depth of 35.2 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 citizen-seismograph network of RaspberryShake which listed the quake at magnitude 4.2 as well. Other agencies reporting the same quake include Japan's National Research Institute for Earth Science and Disaster Resilience (NIED) at magnitude 3.8, and the European-Mediterranean Seismological Centre (EMSC) at magnitude 4.2.
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 Shiroi (pop. 55,300) located 7 km from the epicenter, Matsudo (pop. 470,300) 12 km away, Abiko (pop. 131,800) 13 km away, Kashiwa (pop. 340,200) 13 km away, Nagareyama (pop. 156,000) 16 km away, Yotsukaidō (pop. 86,700) 17 km away, Chiba (pop. 919,700) 19 km away, and Sakura (pop. 182,500) 19 km away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Tokyo (pop. 8,336,600) located 31 km from the epicenter, and Yokohama (pop. 3,574,400) 49 km away.

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Earthquake data

Earthquake details

Date & timeMay 24, 2022 03:43:24 UTC -
Local time at epicenterTuesday, May 24, 2022 at 12:43 pm (GMT +9)
StatusConfirmed
Magnitude4.2
Depth32.8 km
Epicenter latitude / longitude35.7512°N / 140.0356°E (Funabashi-shi, Chiba, Japan)
Antipode35.751°S / 39.964°W
Shaking intensityWeak shaking
Felt4 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoHakone (108 km / 67 mi)
Nearby towns and cities6 km (4 mi) SSW of Shiroi (pop: 55,300) | Show on map | Quakes nearby
13 km (8 mi) ESE of Matsudo (pop: 470,300) | Show on map | Quakes nearby
13 km (8 mi) S of Abiko (pop: 131,800) | Show on map | Quakes nearby
13 km (8 mi) SSE of Kashiwa (pop: 340,200) | Show on map | Quakes nearby
17 km (10 mi) SE of Nagareyama (pop: 156,000) | Show on map | Quakes nearby
18 km (11 mi) NNW of Chiba (pop: 919,700) | Show on map | Quakes nearby
32 km (20 mi) ENE of Tokyo (pop: 8,336,600) | Show on map | Quakes nearby
50 km (31 mi) NE of Yokohama (Kanagawa) (pop: 3,574,400) | Show on map | Quakes nearby
Weather at epicenter at time of quakeFew Clouds 25.1°C (77 F), humidity: 50%, wind: 5 m/s (10 kts) from S
Estimated seismic energy released1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 tons of TNT) | about seismic energy
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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
4.233 km6 Km SSW of Shiroi, JapanUSGS
4.235 kmNEAR EAST COAST OF HONSHU, JAPANEMSC
3.849 km6 Km SW of Shiroi, JapanNIED
4.233 kmNear East Coast of Honshu, JapanRaspberryShake

User reports for this quake (4)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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tokyo (36 km WSW of epicenter) [Map] / Very weak shaking (MMI II) : just a swinging motion  
Tokyo (27.4 km WSW of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s
Tokyo (27.4 km WSW of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s
tokyo (36 km WSW of epicenter) [Map] / Very weak shaking (MMI II) : just a swinging motion  
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