A magnitude 7.7 earthquake struck off the coast of Indonesia’s Flores Island on August 15, 2026, killing at least 20 people and causing widespread building collapses. According to the US Geological Survey (USGS), the quake hit at 5:58 a.m. local time with an epicenter 68 kilometers northwest of Ende in East Nusa Tenggara province.
Casualties and Rescue Efforts in East Nusa Tenggara
Fathur Rahman, head of the city’s rescue agency, reported 20 deaths, six injuries, and two people trapped under rubble near the port town of Maumere. While some survivors have been pulled from the debris, Rahman told AFP that rescue efforts are hampered by landslides that have cut off several roads.
The Nagekeo regency, located closest to the epicenter, remains difficult for first responders to reach. Fathur Rahman noted that communication signals in the area were affected, and Al Jazeera reporter Jessica Washington added that several affected areas remain “locked” to assistance teams.
In Manggarai regency, two people were reported trapped alive under rubble, according to NDTV. Meanwhile, the national disaster mitigation agency (BNPB) confirmed that approximately 2,000 residents in Nagekeo evacuated as a precautionary measure.
Did you know? Flores is part of the Sunda chain and serves as the gateway to Komodo National Park, home to the world’s largest lizards.
Tsunami Warnings and Seismic Data
Indonesia’s Meteorology, Climatology and Geophysics Agency (BMKG) initially issued a tsunami warning, urging coastal residents to move to higher ground. While the warning was later lifted, BMKG earthquake and tsunami director Wijayanto stated that the agency continues to monitor sea levels. CNN reported that waves up to one meter high were recorded in Maurole and Ende.
The USGS recorded the quake at a shallow depth of 10km. Within 30 minutes of the initial shock, three aftershocks occurred with magnitudes of 5.9, 5.6, and 6.1. Local weather agencies told Al Jazeera that these aftershocks could persist for several days.
Impact Comparison: 2026 vs. 1992
This event follows a historical pattern of high-magnitude activity in the region. Both the 2026 and 1992 events shared a similar magnitude of 7.7 along the same stretch of coastline. However, the 1992 disaster was significantly more lethal, with a triggered tsunami killing more than 2,500 people on Flores.
Infrastructure Damage and Eyewitness Accounts
East Nusa Tenggara police chief Rudi Darmoko reported severe damage and collapsed buildings, noting that power outages have complicated the flow of information. The BNPB listed damage to government facilities, warehouses, schools, healthcare facilities, and more than 50 homes.
At the Roman Catholic St. Peter Major Seminary in Sikka, the roof of an assembly hall collapsed during morning Mass. Rector Rev. Guidelbertus Tanga told the Associated Press that students and nuns fled in panic, and one priest suffered a broken leg after jumping from a second-story building.
In Maumere, hospital customer service official Lukas Lotar told AFP that patients fled the building as walls cracked. Other residents described the violence of the shaking; Theresia Uta told CNN the quake was the strongest and longest she had ever experienced, forcing her to hold onto a tree for 10 minutes before evacuating.
Safety Note: Following major seismic events, authorities such as the BMKG advise residents to stay away from damaged buildings, as aftershocks can trigger further collapses.
The “Ring of Fire” Context
Indonesia sits on the Pacific “Ring of Fire,” a seismically active arc stretching from Japan through Southeast Asia to the Americas. With over 17,000 islands, the nation is prone to frequent tremors. Recent precedents include a 9.1-magnitude quake in 2004 that killed 220,000 people across the region and a 2018 quake in Lombok that killed over 550 people.
Frequently Asked Questions
Was there a tsunami after the Flores earthquake?
A tsunami warning was issued and later lifted. However, CNN reported that waves up to one meter high were recorded in Ende and Maurole.
How many people were affected by the shaking?
USGS estimates suggest more than 500,000 people on Flores experienced very strong shaking, while several million others in the wider region felt moderate to strong tremors.
Why is this region so prone to earthquakes?
Indonesia is located on the “Ring of Fire,” a band of intense seismic and volcanic activity around the Pacific Ocean.
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