Will there be an at least 8.0 magnitude earthquake in California before 2028?
Prediction markets currently give a 11% probability that Will there be an at least 8.0 magnitude earthquake in California before 2028?. This contract trades at 11¢ on Kalshi, closing December 31, 2028. The market is pricing an 8.0+ California earthquake at just 10% probability over the next 2.7 years, which aligns reasonably with seismic science (USGS estimates roughly 4.7% annually for magnitude 7+), though the extreme 298.5% implied yield on the Yes side suggests meaningful tail risk premium.
Analysis
The market is pricing an 8.0+ California earthquake at just 10% probability over the next 2.7 years, which aligns reasonably with seismic science (USGS estimates roughly 4.7% annually for magnitude 7+), though the extreme 298.5% implied yield on the Yes side suggests meaningful tail risk premium. Zero 24-hour volume combined with only $5,765 open interest and a wide 5¢ spread indicates thin liquidity that could amplify price swings, and the recent uptick from 10¢ to 11¢ over seven days warrants monitoring for whether this reflects genuine probability reassessment or noise in an illiquid market. The elevated Cliff Risk Index of 8 flags potential for sharp moves near expiration, particularly if any significant seismic activity occurs in California during the contract's remaining 989 days.
Resolution rules
If there is at least an earthquake of 8.0 magnitude with an epicenter in California or its territorial waters before Dec 31, 2028, then the market resolves to Yes.
Indicators
Regime
Trade
sf trade KXEARTHQUAKECALIFORNIA-28 yes 100