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What will the biggest earthquake be on October 4, 2026?
Foretrace AI research
Understand the odds. Examine the reasoning.
Polymarket shows market prices. Foretrace adds AI probability estimates, opposing evidence and a price-dependent outcome or pass decision for each open market.
Choose a market to analyze 6 open questions · Evidence required
24h volume$3.1K
Total volume$3.1K
Liquidity$1.5K
Event end date · UTCOct 5, 2026
Price history
Market probabilityLoading price history…
Polymarket · UTC
Sampled market observations, not AI forecasts. Lines connect available observations. Legend values are current provider quotes; chart points may be older.
Outcomes & resolution rules
6 marketsThese are market-implied probabilities, not AI forecasts. A displayed quote may differ from the price available for your order.
Under 5.3Accepting ordersMarket odds2.5%
Will the biggest earthquake on October 4, 2026 be under 5.3?
Yes2.5%Polymarket estimate
No97.6%Polymarket estimate
- Liquidity
- $446.5
- Deadline · UTC
- Oct 5, 2026
- Yes bid / ask
- 1.0¢ / 3.9¢
- Trading fees
- Enabled · verify on Polymarket
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Resolution rules
This market will resolve to the bracket containing the magnitude of the largest earthquake recorded globally on October 4, 2026, as reported by the USGS Earthquake Catalog. Brackets: Under 5.3 / 5.3 to 5.4 / 5.5 to 5.6 / 5.7 to 5.8 / 5.9 to 6.0 / 6.1 or more. Exactly one bracket resolves "Yes". The observation period is the UTC calendar day: 00:00 UTC to 23:59 UTC on October 4, 2026. An earthquake is assigned to the day containing its origin time. Magnitude refers to the USGS preferred magnitude value, listed under 'Magnitude' in the format column. If USGS revises a magnitude after initial publication, the revision governs provided it is published before 2:00 PM ET on October 5, 2026. A value first published after that time is not considered. If the reported magnitude carries more than one decimal place, it is rounded to the nearest tenth using standard rounding conventions (0.05 rounds up). Brackets are inclusive of their stated endpoints. If no earthquake data for October 4, 2026 has been published by 2:00 PM ET on October 5, 2026, this market will resolve to the "Under 5.3" bracket. The resolution source for this market is the USGS Earthquake Catalog, maintained by the United States Geological Survey, at https://earthquake.usgs.gov/earthquakes/search/.