More than 1,200 people died when Cyclone Senyar battered Sumatra in late 2025, but survivors argue the true catastrophe was not the storm itself—it was a government that saw the danger coming and did nothing. Now, in a Jakarta courtroom, those survivors are suing the Indonesian state, contending that decades of deforestation, weak environmental enforcement, and policy failures transformed a natural weather event into what they call an "ecological disaster."
The scale of destruction was staggering. The floods and landslides ravaged 43 districts and cities across Aceh, North Sumatra, and West Sumatra provinces, damaging more than 600,000 buildings and inflicting an estimated 100 trillion rupiah—roughly $5.6 billion—in economic losses. But what makes this lawsuit unprecedented is its central claim: that much of this harm was preventable, the result not of nature's fury alone but of Indonesia's failure to protect its own people from a foreseeable risk.
The case hinges on a timeline of ignored warnings. Indonesia's meteorological agency, the BMKG, issued alerts about extreme weather linked to Cyclone Senyar eight days before the cyclone made landfall on November 25, then repeated them four days before, and again two days before. The head of BMKG Region 1 had given the government every chance to prepare. Yet authorities took no significant anticipatory or mitigation measures, according to an investigation by independent media outlet Project Multatuli. President Prabowo Subianto continued routine state meetings for several days after the warnings. It was not until November 27—two days after the cyclone had already struck and killed dozens—that he convened a ministerial meeting to address the disaster.
The plaintiffs, represented by lawyers from the Legal Aid Institute including West Sumatra's Alfi Syukri, point to a deeper wound: the government never declared a national emergency. That designation would have unlocked rapid mobilization of central government resources, funding, personnel, and equipment. Without it, response efforts were crippled. "As a result, disaster response on the ground was hampered, because the equipment and human resources in the regions were limited," said Muhammad Qodrat Husni Putra, head of operations at the Aceh chapter of the Legal Aid Institute. Provincial authorities simply lacked the capacity that central intervention could have provided.
But the lawsuit looks beyond the immediate response failure to the long view. Environmental groups and researchers have documented how extensive forest loss across Sumatra's watersheds—driven by plantation expansion, mining concessions, and weak zoning enforcement—had degraded the landscape's natural ability to absorb and manage rainfall. When the extreme rains came, there was nothing to hold them back. The deforestation did not cause Cyclone Senyar, but it transformed its impact into something far more catastrophic.
Through the lawsuit, survivors are asking the court to establish government accountability for environmental governance failures linked to large-scale disasters. They are seeking environmental audits, forest and watershed restoration, stronger disaster-mitigation measures, and a legal precedent that the Indonesian state bears responsibility when policy neglect amplifies natural hazards into preventable tragedies.
The case combines Indonesia's citizen lawsuit mechanism with a challenge to alleged unlawful government administrative inaction under a 2014 public services law. It is a test of whether courts will recognize that ecological disasters are not simply acts of God, but outcomes of choices made—and choices unmade—by those in power.