Volcanic Eruption at Krakatau (Indonesia)
Right now
The most recent data we hold from GVP arrived 8 hours ago, and this point is in it.
Nothing else has been detected within 20 km in the last 24 hours.
Reported by GVP 7 days ago.
It is one of only 4 we have recorded within 20 km of this point since 6 July 2026. The last comparable one was on 17 September 2026. 2 more were recorded here in the fortnight before it.
What the source measured
GVP reported: The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported decreasing activity at Krakatau after a large eruption in early September. A continuous eruption during 4-6 September produced lava fountains, widespread ashfall, and lava flows that advanced NW, W, and SW. Some Strombolian explo...
Urban PEI: 446,832 within a heuristic 100 km radius; not unique people.
Nearby, since 6 July 2026
- September 17, 2026 · score 35 · 0.0 km
- September 8, 2026 · 0.0 km
- August 27, 2026 · 0.1 km
How we know
One source: GVP. Not yet confirmed by a second, independent source.
Our own score for this event is 35 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Volcanic Eruption |
| Severity | High |
| Calamity Score (ours) | 35 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | -6.1009, 105.4233 |
| Nearest City | Labuan (55 km) |
| Urban exposure index (PEI) | 446.8K within 100 km |
| Impact Tier | severe |
| Timestamp | 2026-09-24T11:03:38.000Z |
| Source | https://volcano.si.edu/reports_weekly.cfm |
Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: gvp. Occurrence: 2026-09-24T11:03:38.000Z.
First archived: 2026-10-01T20:27:43.148Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| PubDate | Thu, 24 Sep 2026 07:03:38 -0400 |
| FeedUrl | https://volcano.si.edu/news/WeeklyVolcanoRSS.xml |
Safety Information
During volcanic activity: follow evacuation orders from authorities. Volcanic ash can damage lungs — wear N95 masks or wet cloth over nose and mouth. Stay indoors during ashfall, close windows, and avoid driving. Lahars and pyroclastic flows can travel at high speeds — stay away from valleys and river channels near the volcano.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
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