Earthquakes near Uruma through history

NOAA’s list of significant earthquakes has 6 here, back to 1768. NOAA records no deaths for any of them. The latest on NOAA’s list is a magnitude 7 on February 26, 2010 (70 km SE of Katsuren-haebaru, Japan). NOAA’s record here begins on July 22, 1768 with an earthquake (Ryukyu Islands). 5 of the 6 significant earthquakes NOAA lists here came before 1927. NOAA lists 4 tsunamis that began within 100 km of Uruma, and 3 from elsewhere that reached it with deaths or a metre of water or more. The highest water NOAA records here was 11 m, on May 13, 1791.

• February 26, 2010Earthquake · M 7.070 km SE of Katsuren-haebaru, JapanUSGS · NOAA NCEI
• July 4, 1917Earthquake · M 7.3120 km ENE of Hirara, JapanUSGS
• February 23, 1911Earthquake · M 7.012 km SE of Ginowan, JapanUSGS
• May 13, 1791Tsunami · 11 m hereRyukyu IslandsNOAA NCEI
• July 22, 1768Earthquake · M 6.5 (est.)Ryukyu IslandsNOAA NCEI

• An event counts for Uruma when it began within 100 km of its centre, or 200 km for an earthquake of magnitude 7 or more. Damage can reach further.
• USGS counts here start at magnitude 6: the catalogue’s smaller quakes thin out going back, where few instruments listened.
• NOAA lists significant events only: earthquakes that killed, did about $1 million of damage, reached magnitude 7.5 or intensity X, or raised a tsunami, and eruptions and tsunamis by like measures. Magnitudes before 1900 are its estimates from written accounts.
• Deaths are NOAA’s total for each event, wherever people died, its tsunami and fires included. A tsunami counts the dead its runup records give for this place: NOAA’s total for a tsunami includes its source quake’s.
• A tsunami from elsewhere counts where one of its runups killed or rose a metre or more.
• Counted to October 19, 2026, as is the map. The last 30 days ask USGS again.

How the layers work, where their data comes from and what they can’t tell you: Earthquakes, live, The world through history