Will there be 20 or more earthquakes of magnitude 7.0 or higher worldwide in 2026?

Prediction markets put the probability at 10%: Will there be 20 or more earthquakes of magnitude 7.0 or higher worldwide in 2026. Currently, markets see this as unlikely (10% YES). Map: 7.3-Magnitude Earthquake Hits Off Mexico's Coast.

What’s Happening

A major 7.3-magnitude earthquake struck in the North Pacific Ocean on Friday, July 17, 2026, according to the United States Geological Survey, which initially reported the magnitude as 7.4 before revising it as seismologists reviewed available data. The temblor occurred at 8:48 a.m. Mexico Central time, roughly 30 miles southwest of Aquiles Serdán, off the coast of Mexico's southernmost state of Chiapas. The event is directly relevant to whether there be 20 or more earthquakes of magnitude 7.0 or higher worldwide in 2026, adding to the running annual tally tracked by the USGS. [NYT, Jul 17]

The quake triggered a tsunami warning and shook buildings in neighboring Guatemala and El Salvador, prompting evacuations in San Salvador. Authorities warned waves could reach between 0.3 meters and 1 meter above tide level along some coasts of Mexico and Guatemala, though Mexico's Secretary of the Navy, Raymundo Morales, said water levels were not expected to cause significant damage. The frequency of such events matters because, on average, only about 15 to 16 earthquakes of magnitude 7.0 or higher occur globally each year, meaning the question of whether there be 20 or more earthquakes of magnitude 7.0 or higher worldwide in a single year sits well above the long-term norm. [CNN, Jul 17]

Reaching a total of 20 or more in 2026 would require a pace notably faster than the historical baseline, which is why the threshold remains difficult to clear even after high-profile events like the Chiapas quake. Seismologists caution that preliminary magnitudes are frequently revised, and events measured near the 7.0 boundary can move above or below the counting threshold as data is refined. Whether there be 20 or more earthquakes of magnitude 7.0 or higher worldwide in 2026 will depend on the second-half seismic activity across major subduction zones, including the Pacific "Ring of Fire", where Friday's event occurred. Continued monitoring by the USGS through year-end will determine the final count. [Reuters, Jul 17]

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