A magnitude 4.6 earthquake near Mito, Mito-shi, Ibaraki, Japan, was reported only 16 minutes ago by Japan's National Research Institute for Earth Science and Disaster Resilience (NIED), considered the main national agency that monitors seismic activity in this part of the world. The earthquake occurred at a moderately shallow depth of 55 km beneath the epicenter in the morning on Sunday, September 19th, 2021, at 8:07 am local time. 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 European-Mediterranean Seismological Centre (EMSC) which listed the quake 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 Funaishikawa (pop. 35,300) located 4 km from the epicenter, Hitachi-Naka (pop. 156,800) 11 km away, Katsuta (pop. 156,000) 12 km away, Hitachi (pop. 186,300) 15 km away, Ōmiya (pop. 27,600) 19 km away, Mito (pop. 246,500) 20 km away, Okunoya (pop. 34,600) 27 km away, and Kitaibaraki (pop. 50,800) 37 km away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Saitama (pop. 1,193,400) located 106 km from the epicenter.
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
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