Mount Anak Krakatau Rumbles Anew, Keeping Authorities on High Alert
- 09 Sep 2026 18:34 WIB
- Voice of Indonesia
Key Points
- Mount Anak Krakatau erupted at 00.47 local time on September 9, 2026, with the eruption earthquake lasting 28 seconds and reaching a maximum amplitude of 51 millimeters.
- The volcano remains at Level III (Standby), with authorities enforcing a 3-kilometer exclusion zone around the active crater and urging the public to follow official PVMBG updates.
RRI.CO.ID, Jakarta - Sunda Strait’s volatile volcanic island, Mount Anak Krakatau, has demonstrated that its fiery pulse remains active, erupting in the early hours of Wednesday and prompting authorities to maintain strict safety perimeters across the region.
The eruption, which occurred at 00.47 local time on September 9, 2026, was officially logged by the Center for Volcanology and Geological Hazard Mitigation (PVMBG). Although thick conditions obscured a direct visual measurement of the ash column, seismograph stations captured the sudden subsurface rupture.
While the primary blast lasted for 28 seconds with a maximum amplitude of 51 millimeters, it was part of a broader series of underground movements monitored beneath the Sunda Strait. Subsequent analysis by volcanologists revealed a complex mix of seismic signatures pointing to persistent tectonic-magmatic interactions within the conduit.
"During the observation period, one eruption earthquake was recorded with a maximum amplitude of 51 millimeters. The earthquake lasted for 28 seconds and became the main seismic activity accompanying the eruption early Wednesday morning," PVMBG noted.
Monitoring equipment further captured subtle shifts beneath the crater floor, logging low-frequency tremors alongside complex wave forms.
"There was one Hybrid/Multi-Phase earthquake with an amplitude of 26 millimeters. S-P recordings were not observed during the event, while the earthquake duration was recorded at four seconds," the Geological Agency reported, highlighting a secondary low-frequency event alongside steady tremors fluctuating between two and seven millimeters.
This latest outburst aligns with a recurring Strombolian eruptive style long recognized by the Geological Agency as typical behavior for the growing island. Although previous continuous eruptive episodes had subsided, the ongoing instability has forced authorities to keep the volcano at Level III (Standby) status.
In light of potential sudden explosions, the center strongly urges residents, tourists, and climbers to steer clear of the danger zone. A mandatory safety radius of three kilometers from the active crater remains strictly enforced, with officials advising the public to rely exclusively on verified updates from PVMBG and the Geological Agency. (Naura Sofia-EN)
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