Anak Krakatau Eruption: BMKG Reports No Sea Level Anomaly, Sunda Strait Remains on Alert

Indonesia's Meteorology, Climatology and Geophysics Agency (BMKG) reported that data from 20 tsunami gauges installed around the Sunda Strait showed no anomaly in sea levels as of 7:00 AM local time on Sunday, following renewed eruptive activity at Anak Krakatau volcano.

Acting Deputy for Geophysics Ardhasena Sopaheluwakan said sensors in South Lampung and Serang detected geomagnetic disturbances alongside an increase in volcanic lightning over the past 12 hours, though the intensity was smaller than during the initial eruption phase.

Analysis using High-Frequency (HF) Radar Array technology at Carita and Tanjung Lesung showed tsunami probability remains low, under 40 percent, with wave heights holding around one meter.

To anticipate potential impacts from the eruption, BMKG has intensified a nationwide 24-hour multi-instrument monitoring scheme, working in coordination with the Geological Agency's volcanology center (PVMBG) to provide precise and rapid data, strengthen inter-agency coordination, and safeguard flight operations and coastal areas around the Sunda Strait.

BMKG urged residents living and working along the Sunda Strait coastline to remain calm while increasing their level of vigilance.

Anak Krakatau is located in the Sunda Strait between Java and Sumatra, geographically distant from Bali, but the eruption is being tracked nationally due to its potential impact on flight operations and coastal safety across Indonesia.