Earthquake details

Wednesday, October 3, 1984 Earthquake

The earthquake hit Japan on Wednesday, October 3, 1984 at 00:12 UTC with a magnitude of 5.1. The closest known location in the current dataset is Gero (Japan - JP), about 30.2 km away. The epicenter is located at longitude 137.568 and latitude 35.813.

Magnitude	5.1
Alert	Strong
Depth	14.7 km
Coordinates	35.813, 137.568
UTC time	1984-10-03 00:12:18.160

Location	Iida
Country	Japan (JP)
Severity	Strong

Earthquake map 1984-10-03

Closest countries

The 12 closest cities near the epicenter.

Gero	30.2 km
Ina	34.9 km
Komagane	35.1 km
Nakatsugawa	37.2 km
Iida	39.9 km
Ena	44.0 km
Takayama	45.7 km
Shiojiri	48.1 km
Okaya	50.8 km
Suwa	55.2 km
Gujō	55.7 km
Chino	56.6 km

Nearby earthquakes

The latest 8 earthquakes within 100 km of this epicenter.

M 5.5

Hamamatsu

Japan · 2026-11-07 16:04 UTC

106.4 km

M 5.1

Matsumoto

Japan · 2026-01-15 05:48 UTC

48.9 km

M 4.7

Azumino

Japan · 2026-01-15 05:40 UTC

52.3 km

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