Indonesia Earthquake Alert: Fact-Checking Claims of a 2026 Megathrust Event

Social media posts circulating in February 2026 falsely claimed that Indonesia’s Meteorology, Climatology, and Geophysics Agency (BMKG) issued a megathrust earthquake alert for islands across the archipelago. These claims, which included the BMKG logo and maps of earthquake red zones, have been debunked by Tempo Fact Check and confirmed by the BMKG itself.

The Viral Claims

Posts on Instagram, TikTok, and Facebook asserted that the BMKG was urging alertness for megathrust earthquakes throughout Indonesia. The posts featured imagery intended to lend credibility to the warning, including the BMKG logo and depictions of high-risk zones. Though, these claims are inaccurate.

Fact Check: BMKG’s Official Stance

Tempo Fact Check investigated the claims by analyzing the visuals and directly contacting the BMKG. Dr. Rahmat Triyono, the Acting Director of Earthquakes and Tsunami at BMKG, explicitly stated that the agency did not issue any megathrust earthquake warning for Indonesian islands in 2026. Source: Tempo.co

The Misleading Logo

The BMKG also clarified that the logo used in the circulating posts was not its official logo. The agency’s official logo features a blue sky with white clouds and green stripes, each element carrying specific symbolic meaning related to climatology and geophysics. Source: Tempo.co

Understanding Megathrust Earthquakes in Indonesia

Indonesia is situated in a highly seismically active region, surrounded by thirteen megathrust zones where tectonic plates converge. Source: Tempo.co These zones, including those in the Sunda Strait and near Sumatra, have the potential to generate strong earthquakes and tsunamis. However, despite ongoing monitoring and research, accurately predicting the timing of these events remains impossible.

BMKG’s Earthquake Monitoring and Preparedness

The BMKG continuously monitors seismic activity and studies potential earthquake sources. While the agency identifies potential disaster areas, this information is intended to enhance public preparedness, not to incite panic. Source: CNA The agency has implemented systems for earthquake and tsunami early warnings, which are becoming increasingly swift and accurate.

Recent Seismic Activity

On February 23, 2026, a 7.1-magnitude earthquake struck off the northern coast of Kalimantan (Borneo) Island. However, the BMKG confirmed that this quake did not pose a tsunami threat to North Kalimantan Province. Source: Antara News

Official Information Channels

The BMKG urges the public to rely on official sources for information regarding earthquakes and tsunamis. These include the agency’s Instagram, X (formerly Twitter), website (https://www.bmkg.go.id/gempabumi), and Telegram channel (https://t.me/InaTEWS_BMKG). Source: Tempo.co

Conclusion

The claim that the BMKG issued a warning about a major earthquake in Indonesia in 2026 is false. While Indonesia faces a real risk of megathrust earthquakes, current technology cannot predict when these events will occur, and the BMKG has not issued any specific warning for 2026. It is crucial to rely on official sources for accurate information and to prioritize preparedness measures.