August 6, 1984 Earthquake: Nobeoka, Kyushu, Japan

Date

August 6, 1984

Time

19:06:38 UTC

Place

Nobeoka, Kyushu, Japan

Magnitude

6.7 (Ms)

Focal depth

46 km (29 mi)

Intensity

6 on the Modified Mercalli scale

Tsunami

Yes: the tsunami it caused

Epicenter

32.386° N, 131.945° E

Country

Japan

Deaths

20

Damage

Moderate (about $1 to $5 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.

• May 21, 1792, Kyusyu Island, JapanM6.4 · 15,030 deaths · 6,200 houses destroyed · 161 km
• June 30, 744, Shimabara, Yatsushiro, Higo, JapanM6.4 · 1,520 deaths · 470 houses destroyed · 136 km
• September 4, 1596, Beppu Bay, JapanM6.9 · 708 deaths · 80 houses destroyed · 104 km
• April 15, 2016, Kumamoto, Oita, JapanM7 · 273 deaths · $20 billion · 43,386 houses destroyed · 120 km
• October 30, 1662, Hiuganada, JapanM7.9 · 200 deaths · 2,500 houses destroyed · 76 km
• January 12, 1914, Sakurijima, JapanM7.1 · 63 deaths · $19 million · 2,268 houses destroyed · 150 km
• September 10, 1597, Beppu Bay, JapanM6.4 · 40 deaths · 107 km
• July 28, 2026, Kumamoto, JapanM6.8 · 38 deaths · 3,539 houses destroyed · 119 km
• December 7, 1922, Kyushu, Japan27 deaths · 158 km
• July 28, 1889, Kumamoto, JapanM6.3 · 20 deaths · 239 houses destroyed · 125 km
• June 2, 1905, Aki, JapanM7.8 · 11 deaths · 59 houses destroyed · 180 km
• February 21, 1968, Kyushu, JapanM6.3 · 3 deaths · 134 km
• March 18, 1987, Miyazaki, Naze, Kyushu, JapanM6.7 · 2 deaths · 40 km
• November 18, 1941, Shikoku, JapanM7.4 · 2 deaths · 27 houses destroyed · 45 km
• February 26, 1961, Miyazaki, JapanM7.3 · 2 deaths · 170 houses destroyed · 88 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 5041.