Earthquakes near Kastamonu, 1927–2026

The deadliest was not the strongest: a magnitude 7.5 on November 26, 1943 (6 km SSE of Ilgaz, Turkey), for which NOAA records 4,020 deaths. 3 earthquakes here in these years are on NOAA’s list of significant earthquakes. NOAA records deaths in 3 of the events here, 6,455 in all. The latest on NOAA’s list is a magnitude 7 on August 13, 1951 (14 km S of Eflani, Turkey).

• August 13, 1951Earthquake · M 7.014 km S of Eflani, Turkey · 54 deaths (NOAA)USGS · NOAA NCEI · Wikipedia
• February 1, 1944Earthquake · M 7.610 km WNW of Orta, Turkey · 2,381 deaths (NOAA)USGS · NOAA NCEI · Wikipedia
• November 26, 1943Earthquake · M 7.56 km SSE of Ilgaz, Turkey · 4,020 deaths (NOAA)USGS · NOAA NCEI · Wikipedia

• An event counts for Kastamonu 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