Tuesday, 27 January 2026

Weather Modification and Jakarta’s Floods: A Helpful Tool, Not a Silver Bullet

 By Kusnandar & Co., Attorneys At Law – Jakarta, Indonesia


Jakarta’s perennial flooding problem has once again pushed emergency responses into the spotlight. This time, Governor Pramono Anung’s claim that weather modification operations (OMC) can help suppress flooding has sparked renewed public debate. By intervening in rainfall patterns before extreme downpours reach the capital, the city government hopes to reduce flood risks during peak rainy periods. While the approach reflects a proactive use of technology, it also raises important questions about effectiveness, sustainability, and public expectations.

At first glance, weather modification sounds like a bold and modern solution. In simple terms, the operation aims to disperse rain clouds before they reach Jakarta by inducing rainfall over the sea or less vulnerable areas. If successful, this would reduce rainfall intensity over the city, easing pressure on rivers, drainage systems, and floodgates. From a crisis-management perspective, such measures appear reasonable—especially when meteorological forecasts predict prolonged heavy rainfall.

Indeed, past experiences suggest that weather modification can reduce rainfall intensity under certain conditions. Several operations in recent years have reportedly lowered precipitation levels in the Greater Jakarta area for limited periods. These outcomes support the governor’s argument that OMC can serve as a short-term mitigation tool, particularly when time is critical and conventional infrastructure responses are insufficient.

However, effectiveness is only one side of the equation. Weather systems are inherently complex and influenced by global and regional atmospheric dynamics. No weather modification effort can guarantee precise outcomes, especially during extreme climate events. When rainfall exceeds predictions or weather patterns shift unexpectedly, OMC’s impact may be minimal. This uncertainty means that weather modification should never be portrayed as a definitive solution to Jakarta’s flooding.

More importantly, floods in Jakarta are not caused by rainfall alone. Decades of rapid urbanization, inadequate drainage capacity, land subsidence, shrinking green spaces, and poor river management have turned heavy rain into a recurring disaster. Even if rainfall intensity is reduced, water will still accumulate if it has nowhere to go. Framing weather modification as a central solution risks oversimplifying a deeply structural problem.

There is also a political and social dimension to consider. Public communication matters. When authorities highlight advanced technologies, expectations can rise quickly. If floods persist despite weather modification efforts—as they likely will—public trust may erode. Citizens may perceive such measures as symbolic or even cosmetic, especially if they are not accompanied by visible improvements in infrastructure and long-term planning.

This does not mean weather modification should be dismissed altogether. On the contrary, it can be a useful component of an integrated flood mitigation strategy. In emergency situations, reducing rainfall by even a small margin can buy valuable time for pumps, reservoirs, and evacuation efforts. As a supplementary tool, OMC has its place.

Ultimately, the real test of Jakarta’s flood policy lies beyond the clouds. Sustainable solutions require consistent investment in drainage systems, river normalization, green open spaces, coastal protection, and stricter land-use regulations. Climate adaptation strategies must also account for rising sea levels and land subsidence, challenges that no amount of weather modification can fix.

In this context, Governor Pramono’s weather modification initiative should be viewed as a tactical response—not a strategic cure. Technology can help manage risk in the short term, but long-term resilience depends on structural reform and urban planning. Jakarta does not need miracles from the sky; it needs firm solutions on the ground.


By : K&Co - January 27, 2026

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