Overall Green alert Volcanic eruption for Manam
in Papua New Guinea

Event summary

Volcanic eruption Manam can have a low humanitarian impact based on the exposed population and vulnerability.

GDACS ID VO 1000033
Name: Manam
Lat/Lon: -4.08 , 145.037
Event Date: 21 Oct 2021 00:00 UTC
Exposed Population 30km: About 31000 people within 30km
Exposed Population 100km: About 200000 people within 100km
Max Volc. Explosivity Index VEI: 4
Population Exposure Index PEI: 3
Inserted at: 21 Oct 2021 07:57 UTC

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Virtual OSOCC
Meteo assessment
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Analytical products
Papua New Guinea - Volcanic eruption Thu, 21 Oct 2021 00:00

  • After a series of sporadic small ash emissions in September, the Manam volcano located in the Bismarck Sea (Papua New Guinea) erupted around 20.00 UTC on 19 October. 
  • According to the Smithsonian Institution, the large explosion at Southern Crater produced ash plumes up to 15.2 km. 
  • According to media reports, there are approximately 2,000 people living on the island, and local authorities are monitoring the situation and arranging evacuations for residents. 
  • On 21 October at 5.00 UTC, a Volcanic Ash Advisory (VAA) has been issued by the Darwin VAA Centre, with the aviation colour code red.
Detailed event map. European Union, 2021. Map produced by EC-JRC.
The boundaries and the names shown on this map do not imply official endorsement or acceptance by the European Union.

Updates on volcanic activity (Smithsonian)

The Smithsonian/USGS Weekly Volcanic Activity Report provides information about global volcanism on a weekly basis. Latest Manam report has been published on 20 Oct 2021 10:32.
RVO reported that sporadic small ash emissions from Manam?s Southern Crater were observed starting at the end of September. Nighttime incandescence began on 8 October and incandescent material was occasionally ejected from the crater. The activity was characterized as moderately Strombolian with incandescent material rolling down SW Valley, visibly appearing as short lava flows. The Darwin VAAC noted that on 18 October an ash plume rose to 2.4 km (8,000 ft) a.s.l. and drifted NW. A thermal anomaly was visible in satellite images. RVO stated that at around 0800 on 20 October a large explosion at Southern Crater produced ash plumes that rose at least 1 km above the summit and drifted N and NW. According to the Darwin VAAC ash plumes rose as high as 15.2 km (50,000 ft) a.s.l. between 0840-0950, expanded radially, and then drifted E. Lower-level plumes rose 4.6-5.5 km (15,000-18,000 ft) a.s.l. and drifted NW. Later that day a collapse of newly erupted material, as well deposits from the previous few weeks, produced a debris flow that originated at the head of the valley and descended the SW Valley. Sources: Darwin Volcanic Ash Advisory Centre (VAAC),Rabaul Volcano Observatory (RVO)
See the detail here

Latest media headlines

Articles: 1 | About casualties: 0 | Last hour: 0

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Estimated casualties (PAGER)

USGS estimates the number of casualties for each earthquake for the Prompt Assessment of Global Earthquakes for Response (PAGER) product.
The graph shows the current fatalities estimate.

Exposed population

Data, images, links, services and documents

For this events, GDACS has links to information from the following sources: EC-JRC (31), (1), INGV (2), WMO (1), INFORM (2),