September 13, 1984 Earthquake: Mt Ontake, Central, Honshu, Japan

Date

September 13, 1984

Time

23:48:49 UTC

Place

Mt Ontake, Central, Honshu, Japan

Magnitude

6.1 (Ms)

Focal depth

10 km (6 mi)

Intensity

6 on the Modified Mercalli scale

Tsunami

None recorded

Epicenter

35.789° N, 137.488° E

Country

Japan

Deaths

29

Damage

$43 million

Where the literature gives no number, NCEI records a description on a scale of 1 to 4, printed here in its words. Damage is in millions of US dollars of the year of the event, not adjusted for inflation.

• September 1, 1923, Tokyo, Yokohama, JapanM7.9 · 105,385 deaths · $600 million · 695,000 houses destroyed · 198 km
• May 27, 1293, Kamakura, JapanM7.1 · 23,024 deaths · 185 km
• May 8, 1847, Zenkoji, Nagano, JapanM7.4 · 12,000 deaths · 34,000 houses destroyed · 142 km
• January 18, 1586, Ise Bay, JapanM8.2 · 8,000 deaths · 10,000 houses destroyed · 108 km
• October 27, 1891, Mino-Owari, JapanM8.4 · 7,273 deaths · 142,177 houses destroyed · 55 km
• June 28, 1948, Fukui, JapanM7.3 · 5,131 deaths · $1 billion · 63,000 houses destroyed · 155 km
• January 12, 1945, S, Honshu, JapanM7.1 · 2,306 deaths · 7,221 houses destroyed · 124 km
• May 20, 1751, NW, Honshu, JapanM6.6 · 2,100 deaths · 9,100 houses destroyed · 166 km
• October 28, 1707, Enshunada, JapanM8.4 · 2,000 deaths · 10,000 houses destroyed · 190 km
• August 2, 887, Niigata, Honshu, JapanM6.5 · 2,000 deaths · 198 km
• February 1, 1666, Takata, Japan1,500 deaths · 142 km
• July 9, 1854, Iga, Ise, Yamato, Japan1,352 deaths · 5,000 houses destroyed · 161 km
• June 16, 1662, Yamasiro, Japan600 deaths · 138 km
• January 1, 2024, Ishikawa, Honshu, JapanM7.5 · 549 deaths · $18 billion · 29,966 houses destroyed · 190 km
• December 17, 1096, Enshunada, JapanM8.4 · 400 deaths · 199 km

Significant earthquakes of 1984The 1900sEvery quake the USGS located in 1984Recent earthquakes near hereThis day in weather history

Significant earthquakes from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-09-24. NCEI earthquake 5046.