How Long Can Survivors Last in Earthquake Rubble?
Survival after an earthquake depends on injuries, air, water, and void spaces. Most rescues happen within 24 hours, but rare cases last weeks.
As rescue teams in western Colombia enter the third day of searching for survivors after a powerful earthquake, the question of how long people can survive beneath the rubble becomes critical. Experts say the answer depends on a complex mix of injuries, environment, and sheer luck.
Most successful rescues occur within the first 24 hours after a disaster. After that, the odds of finding someone alive diminish significantly each day. The majority of trapped victims suffer from severe injuries or are pinned by heavy debris, which complicates survival.
However, history shows that extraordinary endurance is possible. In Japan, after the 2011 earthquake and tsunami, a teenager and his 80-year-old grandmother were pulled alive from their collapsed home after nine days. A year earlier, a 16-year-old girl in Haiti was rescued from rubble in Port-au-Prince after an astonishing 15 days.
A key factor in these cases is the presence of a "survivable void space" — a pocket within the debris that shields a person from crushing injuries, according to geophysicist Victor Tsai of Brown University. A sturdy desk or similar furniture can create such a space.
Access to air and water becomes crucial as time passes. While a person can go without food for a while, dehydration is a more immediate threat. The release of fire, smoke, or hazardous chemicals from a collapse can also drastically reduce survival chances, notes emergency response expert Dr. Joseph Barbera of George Washington University.
Temperature also plays a dual role. Extreme heat or cold can affect a trapped person's condition, and harsh weather can hamper rescue operations themselves.
In Colombia, authorities have reported most deaths in the cities of Cali, Pereira, Manizales, and Quibdo, with less information available from rural zones. A glimmer of hope emerged when a 32-year-old woman was rescued from a collapsed building in Pereira after being trapped for 36 hours.
Medical experts stress that care must begin even before a victim is fully extracted. The buildup of toxins from crushed muscles can cause a fatal shock once the pressure is released, making on-site medical intervention vital.
For those who find themselves trapped, experts advise conserving energy, rationing supplies, and making noise to attract rescuers. A phone, if available, should be used sparingly to preserve battery life. The best preventive measure remains preparation: in earthquake-prone regions, the advice is to drop, cover, and hold on, seeking shelter under heavy furniture that might create a survivable pocket.