June 20, 1727 Earthquake: Hamhung, North Korea

Name: June 20, 1727 Earthquake: Hamhung, North Korea
Start: 1727-06-20
Location: Hamhung, North Korea

June 20, 1727 · M5.7

A magnitude 5.7 earthquake struck Hamhung, North Korea on June 20, 1727.

Map

Where it struck, with the other significant earthquakes within 200 km. Circles are sized and colored by magnitude; select one for its page.

The earthquake

Date: June 20, 1727
Place: Hamhung, North Korea
Magnitude: 5.7
Intensity: 7 on the Modified Mercalli scale
Tsunami: None recorded
Epicenter: 39.500° N, 127.300° E
Country: North Korea

The toll

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.

Other significant earthquakes nearby

Within 200 km, the deadliest first.

November 502, Pyongyang, North KoreaM6.7 · Deaths: many · 181 km

Significant earthquakes of 1727 The 1700s Recent earthquakes near here This day in weather history

Sources

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 1239.