Light mag. 4.5 earthquake - North Pacific Ocean, 29 km southwest of Tateyama, Chiba, Japan, on Tuesday, May 17, 2022 at 10:46 pm (GMT +9) -
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Light magnitude 4.5 earthquake at 144 km depth
17 May 13:54 UTC: First to report: NIED after 8 minutes.
17 May 14:13: Now using data updates from USGS
17 May 14:32: Hypocenter depth recalculated from 143.3 to 144.1 km (from 89 to 90 mi). Epicenter location corrected by 0.5 km (0.3 mi) towards SSE.
17 May 14:13: Now using data updates from USGS
17 May 14:32: Hypocenter depth recalculated from 143.3 to 144.1 km (from 89 to 90 mi). Epicenter location corrected by 0.5 km (0.3 mi) towards SSE.
Update Tue, 17 May 2022, 14:09
Moderate 4.4 quake hits near Tateyama, Tateyama-shi, Chiba, Japan4.4 quake 17 May 10:46 pm (GMT +9)
An intermediate magnitude 4.4 earthquake was reported late at night near Tateyama, Tateyama-shi, Chiba, Japan.
According to Japan's National Research Institute for Earth Science and Disaster Resilience (NIED), the quake hit on Tuesday, May 17th, 2022, at 10:46 pm local time at an intermediate depth of 141.4 km. The strength of the earthquake may have been tempered by its relative great depth below the surface, which makes it feel weaker in absolute terms. 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.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.1 earthquake.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Tateyama (pop. 50,100) located 37 km from the epicenter, Miura (pop. 51,500) 44 km away, Itō (pop. 71,600) 51 km away, Yokosuka (pop. 429,000) 60 km away, Kamakura (pop. 166,000) 62 km away, Chigasaki (pop. 231,700) 67 km away, Fujisawa (pop. 394,600) 67 km away, Odawara (pop. 203,000) 68 km away, and Yokohama (pop. 3,574,400) 76 km away. In Tokyo (pop. 8,336,600, 105 km away), the quake was probably not felt.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.
According to Japan's National Research Institute for Earth Science and Disaster Resilience (NIED), the quake hit on Tuesday, May 17th, 2022, at 10:46 pm local time at an intermediate depth of 141.4 km. The strength of the earthquake may have been tempered by its relative great depth below the surface, which makes it feel weaker in absolute terms. 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.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.1 earthquake.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Tateyama (pop. 50,100) located 37 km from the epicenter, Miura (pop. 51,500) 44 km away, Itō (pop. 71,600) 51 km away, Yokosuka (pop. 429,000) 60 km away, Kamakura (pop. 166,000) 62 km away, Chigasaki (pop. 231,700) 67 km away, Fujisawa (pop. 394,600) 67 km away, Odawara (pop. 203,000) 68 km away, and Yokohama (pop. 3,574,400) 76 km away. In Tokyo (pop. 8,336,600, 105 km away), the quake was probably not felt.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.
Earthquake data
Earthquake details
| Date & time | May 17, 2022 13:46:30 UTC - |
| Local time at epicenter | Tuesday, May 17, 2022 at 10:46 pm (GMT +9) |
| Status | Confirmed |
| Magnitude | 4.5 |
| Depth | 144.1 km |
| Epicenter latitude / longitude | 34.7864°N / 139.6559°E  (North Pacific Ocean, Japan) |
| Antipode | 34.786°S / 40.344°W |
| Shaking intensity | Very weak shaking |
| Felt | 0 reports |
| Primary data source | USGS (United States Geological Survey) |
| Nearest volcano | Oshima (25 km / 16 mi) |
| Nearby towns and cities | 29 km (18 mi) SW of Tateyama (pop: 50,100) | Show on map | Quakes nearby 39 km (25 mi) S of Miura (pop: 51,500) | Show on map | Quakes nearby 55 km (34 mi) S of Yokosuka (pop: 429,000) | Show on map | Quakes nearby 59 km (37 mi) S of Kamakura (pop: 166,000) | Show on map | Quakes nearby 65 km (40 mi) SSE of Fujisawa (pop: 394,600) | Show on map | Quakes nearby 65 km (41 mi) SSE of Chigasaki (pop: 231,700) | Show on map | Quakes nearby 72 km (45 mi) S of Yokohama (pop: 3,574,400) | Show on map | Quakes nearby 101 km (62 mi) S of Tokyo (pop: 8,336,600) | Show on map | Quakes nearby 65 km (41 mi) NE of Shikine-jima Island (pop: 600) | Show on map | Quakes nearby 202 km (125 mi) SE of Honshu Island (pop: 104,000,000) | Show on map | Quakes nearby |
| Weather at epicenter at time of quake | Overcast Clouds  17°C (63 F), humidity: 84%, wind: 3 m/s (6 kts) from SW |
| Estimated seismic energy released | 3.5 x 1011 joules (98.6 megawatt hours, equivalent to 84.8 tons of TNT) | about seismic energy |
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. | Depth | Location | Source |
| 4.5 | 144 km | Japan: NEAR IZU-OSHIMA ISLAND | USGS |
| 4.5 | 136 km | NEAR S. COAST OF HONSHU, JAPAN | EMSC |
| 4.4 | 141 km | 28 Km SW of Tateyama, Japan | NIED |
| 4.5 | 144 km | Near S. Coast of Honshu, Japan | RaspberryShake |
| 4.5 | 136 km | Near S. Coast of Honshu, Japan | GFZ |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Earlier earthquakes in the same area
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