Will there be 1 earthquake of 6.5 or above magnitude worldwide?

Analysis

The USGS catalogue, checked on 30 September 2026 at 12:02 UTC, listed no earthquakes of magnitude 6.5 or higher in the window from 28 September 12:00 AM ET to 4 October 11:59 PM ET. About 112 hours of that window remained at the time of the check. That reading is what decides the question, and it means the count currently stands at zero. The forecast leans against exactly one qualifying quake. To reach one, an event must still occur in the remaining hours, and the catalogue analysis gathered for this forecast puts that at 38% for similar spells over the past 365 days. Those events averaged 0.12 per day, and the median 168-hour window held one event. That figure describes the whole week, not the part still to come. A recent event shows how such quakes arrive. USGS lists a reviewed M6.6 near Tadine, New Caledonia, on 25 September 2026 at 21:23 UTC. It falls before the window opens, so it does not count. One report says the agency first registered it at magnitude 7 before the revision, a reminder that early magnitudes can change. The evidence also carries a USGS note that an M6.0 or larger quake occurs roughly once every three days, and that a week or more with none is not unusual. That is a different threshold from the one at issue here. The evidence gathered for this forecast does not say how likely a second event is once one has occurred. Watch for the first M6.5+ entry in the USGS catalogue during the window, and for any later magnitude revision that moves an event across the 6.5 line.