Earthquakes near Saïda through history

It was also the deadliest: NOAA records 5,000 deaths for it. NOAA’s list of significant earthquakes has 5 here, back to 1819. NOAA records deaths in 4 of the events here, 5,201 in all. The latest on NOAA’s list is a magnitude 5.9 on August 18, 1994 (Mascara). NOAA’s record here begins in March 1819 with an earthquake (Mascara).

• August 18, 1994Earthquake · M 5.9Mascara · 171 deaths (NOAA)NOAA NCEI
• October 10, 1980Earthquake · M 7.33 km NNE of Chlef, Algeria · 5,000 deaths (NOAA)USGS · NOAA NCEI · Wikipedia
• March 1819EarthquakeMascaraNOAA NCEI

• An event counts for Saïda 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