Earthquakes near Īz̄eh through history

The deadliest was not the strongest: a magnitude 6 on April 6, 1977 (Naghan,Ardal,Jaghdan,Dastgerd,Kordan,Sarmur), for which NOAA records 366 deaths. NOAA’s list of significant earthquakes has 10 here, back to 1929. NOAA records deaths in 5 of the events here, 455 in all. The latest on NOAA’s list is a magnitude 5.4 on December 5, 2024 (31 km SE of Masjed Soleymān, Iran). NOAA’s record here begins on July 15, 1929 with an earthquake (Masjed Soleyman,Andarkah).

• December 5, 2024Earthquake · M 5.431 km SE of Masjed Soleymān, IranUSGS · NOAA NCEI
• December 14, 1978Earthquake · M 6.2Masjed-E-Soleyman · 76 deaths (NOAA)USGS · NOAA NCEI
• April 6, 1977Earthquake · M 6.0Naghan,Ardal,Jaghdan,Dastgerd,Kordan,Sarmur · 366 deaths (NOAA)NOAA NCEI · Wikipedia
• July 15, 1929Earthquake · M 6.2Masjed Soleyman,Andarkah · 6 deaths (NOAA)USGS · NOAA NCEI

• An event counts for Īz̄eh 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