M4.4 earthquake 184 km ENE of Miyako, Japan
A magnitude 4.4 earthquake struck 184 km ENE of Miyako, Japan on Sat, Aug 20, 2016, 6:47 PM JST (09:47 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.8 169 km ENE of Miyako, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.4 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2016-08-20 09:47:46 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 40.199° N, 143.973° E
- Region
- Japan
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 6.3 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.24
- Depth from
- Operator assigned
- Station coverage gap
- 237°, poorly surrounded by stations
- Stations used
- 21
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.4181 km ENE of Miyako, Japan · 3695 days ago · 6 km deep · 8 km away
- 5.8169 km ENE of Miyako, Japan · 3695 days ago · 11 km deep · 24 km away · felt by 6
- 4.7174 km ENE of Miyako, Japan · 3695 days ago · 10 km deep · 10 km away
- 5.2168 km ENE of Miyako, Japan · 3695 days ago · 10 km deep · 38 km away
- 5.2171 km ENE of Miyako, Japan · 3695 days ago · 10 km deep · 23 km away
- 5.2191 km E of Hachinohe, Japan · 3694 days ago · 10 km deep · 57 km away · felt by 4
- 5.3145 km E of Miyako, Japan · 3694 days ago · 6 km deep · 57 km away
- 4.1133 km E of Yamada, Japan · 3681 days ago · 23 km deep · 91 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us10006gl0. Read Fri, Oct 2, 2026, 4:55 PM UTC.