A magnitude 4.3 earthquake shook Cianjur Regency in West Java, Indonesia, on Tuesday, September 1, 2026, according to Databoks Katadata. The quake was not expected to generate a tsunami, the outlet reported.
Tremors from the event were felt in several major cities, including Jakarta, Bandung, and Sukabumi, according to multiple Indonesian news outlets. Kompas.com reported that the country’s meteorological agency, BMKG, attributed the quake to an active fault line. Suara.com described the shaking as strong enough in some areas that residents compared it to someone slamming a door.
The earthquake originated in Cianjur, a district in West Java that has experienced notable seismic activity in recent years. CNBC Indonesia noted that the event caused buildings to sway in Jakarta, even though the epicenter was located more than 100 kilometers away. DetikNews also confirmed the quake’s source in Cianjur and its reach to the capital.
No immediate reports of damage or casualties were included in the available summaries. The BMKG’s assessment that the event was triggered by an active fault underscores the region’s vulnerability to tectonic movements, as Cianjur sits in a geologically active zone.
Authorities have not issued a tsunami warning, and the quake’s moderate magnitude suggests limited impact, but residents in affected areas are advised to stay alert for potential aftershocks. Monitoring by BMKG will continue as the situation develops.
