Recent global seismic rates for magnitude 5.5+ events average roughly 10–15 per week based on USGS long-term catalogs, with substantial week-to-week variability driven by aftershock sequences and tectonic clustering. The leading market-implied odds around lower counts reflect the expected decay of aftershocks from the August 15 magnitude 7.7 Flores event and its ongoing swarm in Indonesia, which has already produced dozens of M5.5+ shocks this month. USGS data show no sustained global increase in large earthquakes, though short-term spikes remain possible from active subduction zones or unforeseen mainshocks. Traders weigh these factors against the Poisson-like randomness of background seismicity when assessing the 45–55% range outcomes.