M4.3 earthquake 7 km SE of Hitachi, Japan
A magnitude 4.3 earthquake struck 7 km SE of Hitachi, Japan on Thu, Dec 27, 1984, 2:54 PM JST (05:54 UTC), 59 km (36 mi) below the surface.
A larger quake followed: M4.9 65 km E of Iwaki, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb), light
- Local time
- UTC
- 1984-12-27 05:54:16 UTC
- Depth
- 58.5 km (36.4 mi), shallow
- Epicenter
- 36.560° N, 140.723° 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.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 6 in the 30 days before it.
After
- 4.965 km E of Iwaki, Japan · 15239 days ago · 54 km deep · 98 km away
- 4.2near the east coast of Honshu, Japan · 15226 days ago · 67 km deep · 81 km away
- 4.329 km ESE of Takahagi, Japan · 15217 days ago · 58 km deep · 29 km away
- 4.661 km ESE of Takahagi, Japan · 15195 days ago · 80 km deep · 58 km away
Before
- 4.939 km ENE of Iwaki, Japan · 15253 days ago · 59 km deep · 86 km away
- 5.254 km ENE of Iwaki, Japan · 15253 days ago · 44 km deep · 95 km away
- 4.73 km SE of Toride, Japan · 15255 days ago · 84 km deep · 94 km away
- 4.475 km E of Iwaki, Japan · 15256 days ago · 54 km deep · 98 km away
- 5.010 km ESE of Funaishikawa, Japan · 15266 days ago · 67 km deep · 17 km away
- 4.659 km ESE of Kitaibaraki, Japan · 15269 days ago · 54 km deep · 61 km away
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002aez. Read Tue, Sep 22, 2026, 9:21 PM UTC.