The death toll surpassed 41,000 across the two countries as of Tuesday, making the quakes the deadliest seen worldwide in more than a decade.
On Feb. 6, a magnitude 7.8 quake struck in the southern Turkish province of Kahramanmaras, U.S. Geological Survey said. Hours later, a 7.5 magnitude quake hit more than 60 miles away. Scores of violent aftershocks followed, leaving destruction and devastation in their path.
More than a week after the earthquakes, search teams said they were still hearing voices from under the rubble on Tuesday. Emergency workers from around the world have been the ground in ongoing rescue efforts. Some successful rescue have offered glimmers of hope – but relief still struggled to reach some devastated areas, particularly in Syria.
The 12-year civil war has complicated relief efforts and significantly delayed aid moving into the country. Some people there said they have received nothing.
How to help earthquake victims in Turkey and Syria: These groups are taking donations
Thousands of buildings were toppled from the earthquakes, leaving millions homeless in Turkey and Syria amid freezing temperatures. In addition to the climbing death toll, Turkish President Recep Tayyip Erdogan said Tuesday that more than 105,00 were injured.
Erdogan has referred to the quake as "the disaster of the century."
Here are some of the world’s deadliest earthquakes and natural disasters in recent years.
'Heart-wrenching': Drone footage shows destruction from Turkey and Syria earthquakes
Deadliest earthquakes in recent history
Hundreds of thousands of people have died in major earthquakes over the past two decades alone.
June 2022 in Afghanistan: More than 1,100 people died in a magnitude 6.1 earthquake.
August 2021 in Haiti: More than 2,200 people were killed in a magnitude 7.2 earthquake.
September 2018 in Indonesia: A magnitude 7.5 earthquake triggered a tsunami, killing more than 4,300 people.
April 2015 in Nepal: A magnitude 7.8 earthquakes killed more than 8,800 people.
March 2011 in Japan: A magnitude 9.0 earthquake triggered a tsunami, killing more than 18,400 people.
January 2010 in Haiti: A magnitude 7.0 quake killed hundreds of thousands of people. Estimates for the death toll range significantly. The United Nations says about 220,000 people were killed, while the Haitian government estimates put the number at a staggering 316,000 dead.
May 2008 in China: A magnitude 7.9 quake killed more than 87,500 people.
May 2006 in Indonesia: More than 5,700 people died from a magnitude 6.3 quake.
October 2005 in Pakistan: A magnitude 7.6 earthquake killed more than 80,000 people.
March 2005 in Indonesia: About 1,300 people died from a magnitude 8.6 quake.
December 2004 in Indonesia: A magnitude 9.1 quake triggered an Indian Ocean tsunami, which killed about 230,000 people in a dozen countries.
December 2003 in Iran: More than 20,000 people died from a magnitude 6.6 earthquake.
May 2003 in Algeria: A magnitude 6.8 earthquake killed more than 2,200 people.
January 2001 in India: A magnitude 7.6 quake killed as many as 20,000 people.
August 1999 in Turkey: 18,000 people died from a magnitude 7.6 earthquake.
May 1998 in Afghanistan: A magnitude 6.6 earthquake killed more than 4,000 people.
100 years of earthquakes: Turkey, Syria disaster could be among this century's worst
Turkey earthquake damage: Photos capture devastating aftermath of powerful 7.8 magnitude quake
Worst earthquake ever recorded
Of course, it's difficult to pinpoint the "worst" earthquake in history, because the strength of temblors – as well as damage, death tolls and devastation to communities – ranges significantly.
The most powerful earthquake that has been instrumentally reported was a magnitude 9.5 quake in Chile in 1960. Also known as the Valdivia earthquake, the quake "generated a tsunami that was destructive not only along the coast of Chile, but also across the Pacific in Hawaii, Japan, and the Philippines," according to NOAA's National Centers for Environmental Information.
Estimates for the death toll associated with both the Valdivia earthquake and tsunami range from 490 to 5,700, NOAA says, and 3,000 people were reported injured. The Chilean government estimated that 2 million people were left homeless and more than 58,000 homes were destroyed.
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Have Turkey and Syria seen deadly earthquakes before?
Monday's magnitude 7.8 earthquake occurred in the East Anatolian fault zone, a seismically active area that has produced damaging earthquakes in the past.
"Almost all of Turkey is really seismically active," Eric Sandvol, a seismologist at the University of Missouri, told The Associated Press. "This is not something new to the country."
Just over three years ago, in January 2020, Turkey was struck by a magnitude 6.7 earthquake that caused significant damage. And in 1999, a devastating magnitude 7.4 quake near Izmit on the North Anatolian fault system killed an estimated 18,000 people.
Deadly earthquakes have hit Turkey before: Why there? Could a similar quake strike the US?
Contributing: John Bacon and Jorge L. Ortiz, USA TODAY; The Associated Press
This article originally appeared on USA TODAY: Turkey, Syria earthquakes among deadliest in recent world history