Earthquakes near Tegal through history

The strongest was an estimated magnitude 7 on January 4, 1840 (Java: Purworejo). The deadliest was not the strongest: an earthquake on December 2, 1924 (Java: Wonosobo), for which NOAA records 727 deaths. NOAA records deaths in 15 of the events here, 1,558 in all. The latest on NOAA’s list is a magnitude 4.5 on July 7, 2024 (7 km ENE of Pekalongan, Indonesia). NOAA’s record here begins in 1698 with an eruption (Ciremai). 10 of the 15 significant earthquakes NOAA lists here came before 1927. NOAA lists one tsunami that began within 100 km of Tegal, and 2 from elsewhere that reached it with deaths or a metre of water or more. The highest water NOAA records here was 6.83 m, on July 17, 2006. The deadliest here came on July 17, 2006 from a magnitude 7.7 earthquake (South Of Java): NOAA’s runup records count 280 deaths within 100 km of Tegal. NOAA lists 12 significant eruptions of 2 volcanoes within 100 km of Tegal. The largest was Ciremai in 1698, at 3 on the volcanic explosivity index.

• July 7, 2024Earthquake · M 4.57 km ENE of Pekalongan, IndonesiaUSGS · NOAA NCEI
• July 17, 2006Tsunami · 6.83 m hereSouth Of Java · 280 deaths here (NOAA)NOAA NCEI · Wikipedia
• December 2, 1924EarthquakeJava: Wonosobo · 727 deaths (NOAA)NOAA NCEI
• January 4, 1840Earthquake · M 7.0 (est.)Java: PurworejoNOAA NCEI
• September 9, 1823Earthquake · M 6.8 (est.)JavaNOAA NCEI
• 1698Eruption · VEI 3CiremaiNOAA NCEI · Wikipedia

• An event counts for Tegal 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