Mount Etna's frequent summit and flank activity, including Strombolian explosions, lava flows, and ash emissions from June through early September 2026, has kept the market near even because official VEI assignments depend on precise ejecta volume and plume height thresholds that current INGV monitoring data have not yet clearly exceeded for a VEI 2 event. Recent phases produced modest ash columns and effusive output but lacked the sustained explosive intensity or total erupted mass typical of confirmed VEI 2 episodes in Etna's record, where roughly half of post-1955 events reached that level. Key uncertainties include evolving volcanic tremor amplitudes, exact pyroclastic volumes from ongoing Voragine and Northeast Crater vents, and whether new fissures will generate larger plumes before December. Upcoming INGV weekly bulletins, satellite thermal and ash observations, and any escalation in infrasound or deformation could quickly shift consensus if they document a moderate explosive phase meeting the ≥10^6 m³ criterion.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedEtna eruption with VEI 2+ in 2026?
The primary resolution source will be the Smithsonian Institution Global Volcanism Program (GVP: https://volcano.si.edu/), including the 2026 eruptions page (https://volcano.si.edu/faq/index.cfm?question=eruptionsbyyear&checkyear=2026).
This market will resolve as soon as a qualifying eruption occurs, or once December 31, 2026, 11:59 PM ET has passed and no qualifying eruption has occurred. If there is an ongoing Etna eruption at that time, this market may remain open for an additional 14 calendar days to verify the VEI rating of the ongoing eruption.
If the Smithsonian GVP becomes permanently unavailable, or if an ongoing eruption has not been assigned a VEI rating within 14 calendar days of December 31, 2026, this market may resolve based on a consensus of credible scientific sources, including the U.S. Geological Survey (USGS), national or regional volcanic observatories, or credible reporting of a scientific consensus.
Market Opened: Apr 21, 2026, 3:33 PM ET
Resolver
0x65070BE91...The primary resolution source will be the Smithsonian Institution Global Volcanism Program (GVP: https://volcano.si.edu/), including the 2026 eruptions page (https://volcano.si.edu/faq/index.cfm?question=eruptionsbyyear&checkyear=2026).
This market will resolve as soon as a qualifying eruption occurs, or once December 31, 2026, 11:59 PM ET has passed and no qualifying eruption has occurred. If there is an ongoing Etna eruption at that time, this market may remain open for an additional 14 calendar days to verify the VEI rating of the ongoing eruption.
If the Smithsonian GVP becomes permanently unavailable, or if an ongoing eruption has not been assigned a VEI rating within 14 calendar days of December 31, 2026, this market may resolve based on a consensus of credible scientific sources, including the U.S. Geological Survey (USGS), national or regional volcanic observatories, or credible reporting of a scientific consensus.
Resolver
0x65070BE91...Mount Etna's frequent summit and flank activity, including Strombolian explosions, lava flows, and ash emissions from June through early September 2026, has kept the market near even because official VEI assignments depend on precise ejecta volume and plume height thresholds that current INGV monitoring data have not yet clearly exceeded for a VEI 2 event. Recent phases produced modest ash columns and effusive output but lacked the sustained explosive intensity or total erupted mass typical of confirmed VEI 2 episodes in Etna's record, where roughly half of post-1955 events reached that level. Key uncertainties include evolving volcanic tremor amplitudes, exact pyroclastic volumes from ongoing Voragine and Northeast Crater vents, and whether new fissures will generate larger plumes before December. Upcoming INGV weekly bulletins, satellite thermal and ash observations, and any escalation in infrasound or deformation could quickly shift consensus if they document a moderate explosive phase meeting the ≥10^6 m³ criterion.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated


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