The 89.5% market-implied probability favoring "No" on a magnitude 9.0+ earthquake before 2027 stems from the extreme rarity of such events, occurring roughly once every 20-30 years globally based on instrumental records since 1900—including the 2011 Tohoku (M9.1) and 2004 Sumatra (M9.3) ruptures. With just over two years remaining, USGS global seismicity data implies a low annual rate of about 4%, yielding under 10% cumulative odds via Poisson modeling. No subduction zones like Cascadia or Nankai Trough show precursors for imminent failure per official forecasts; recent activity, such as Japan's January 2024 M7.6 quake, falls far short. Trader consensus reflects this baseline rarity amid inherent forecasting uncertainty.
Experimental AI-generated summary referencing Polymarket data · Updated9.0 or above earthquake before 2027?
9.0 or above earthquake before 2027?
$146,995 Vol.
$146,995 Vol.
$146,995 Vol.
$146,995 Vol.
The resolution source for this market is the United States Geological Survey (USGS) Earthquake Hazards Program (https://earthquake.usgs.gov/earthquakes/browse/significant.php#sigdef).
If an earthquake of substantial size has occurred within this market's timeframe but not yet appeared on the resolution source, this market may remain open until January 31, 2027, 11:59 PM ET, or until the earthquake in question otherwise appears on the resolution source. If such an earthquake has not appeared on the resolution source by that date, another credible resolution source will be used.
After a qualifying earthquake is registered, this market will remain open for 24 hours to account for any revisions to its recorded magnitude. After 24 hours, this market will resolve according to the latest provided data.
Market Opened: Dec 8, 2025, 5:28 PM ET
Resolver
0x65070BE91...The resolution source for this market is the United States Geological Survey (USGS) Earthquake Hazards Program (https://earthquake.usgs.gov/earthquakes/browse/significant.php#sigdef).
If an earthquake of substantial size has occurred within this market's timeframe but not yet appeared on the resolution source, this market may remain open until January 31, 2027, 11:59 PM ET, or until the earthquake in question otherwise appears on the resolution source. If such an earthquake has not appeared on the resolution source by that date, another credible resolution source will be used.
After a qualifying earthquake is registered, this market will remain open for 24 hours to account for any revisions to its recorded magnitude. After 24 hours, this market will resolve according to the latest provided data.
Resolver
0x65070BE91...The 89.5% market-implied probability favoring "No" on a magnitude 9.0+ earthquake before 2027 stems from the extreme rarity of such events, occurring roughly once every 20-30 years globally based on instrumental records since 1900—including the 2011 Tohoku (M9.1) and 2004 Sumatra (M9.3) ruptures. With just over two years remaining, USGS global seismicity data implies a low annual rate of about 4%, yielding under 10% cumulative odds via Poisson modeling. No subduction zones like Cascadia or Nankai Trough show precursors for imminent failure per official forecasts; recent activity, such as Japan's January 2024 M7.6 quake, falls far short. Trader consensus reflects this baseline rarity amid inherent forecasting uncertainty.
Experimental AI-generated summary referencing Polymarket data · Updated


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