What will the biggest earthquake be on October 20, 2026?
Polymarket·Climate and Weather·ends Oct 21, 2026
As of 10:59 UTC on 19 Oct 2026, “6.1 or more” leads “What will the biggest earthquake be on October 20, 2026?” on Polymarket at 24% (+1pp in 24h), followed by “Under 5.3” at 18% and “5.5 to 5.6” at 18%, out of 6 outcomes. The event has $19 in Polymarket-reported 24-hour volume. pdata.world compares it with 22 related events on Polymarket, Kalshi and Gemini.
vol cum
$19
vol 24h
$19
outcomes
6
ends
Oct 21, 2026
outcomesclick to inspect →
showing 5 of 6
WeatherEarthquakesHide From New
marketselected outcome
6.1 or more
rank #1
24¢
▲ 0.5pp
24h change
vol cum
$19
vol 24h
$19
spread
0.01
ends
Oct 21, 2026
This market will resolve to the bracket containing the magnitude of the largest earthquake recorded globally on October 20, 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 20, 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 21, 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 20, 2026 has been published by 2:00 PM ET on October 21, 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/.
