Global seismic activity and volcanic disruptions continue; Kamchatka tsunami study released
Worldwide earthquake monitoring recorded over half a thousand events in the past day, with the strongest being an M5.4 near Svalbard. Meanwhile, Mount Etna's ash continues to impact air travel in Sicily, and researchers have published new findings on why the magnitude 8.8 Kamchatka tsunami of July 2025 had limited distant reach.
Combined worldwide earthquake records from the past 24 hours indicate a total of 532 events were detected globally. The strongest event in this period was an M5.4 magnitude quake located north of Svalbard, with a depth of 10.0 km and origin time on September 28, 2026.
In the Mediterranean region, Mount Etna remains active enough to disrupt air travel. A thick ash cloud has been interfering with flights to Catania in Sicily for several days. This is not an isolated incident; Italy's most active volcano has impacted European air traffic multiple times during this summer season.
Seismic activity monitoring continues across South America as well. FUNVISIS (Venezuela) issued updates noting that significant seismic activity began on June 24, 2026. Their weekly report for the period between September 18 and September 24, 2026, recorded 136 earthquakes during that week.
In scientific research regarding past major events, a new study has been released concerning the tsunami generated by the magnitude 8.8 Kamchatka earthquake of July 29, 2025. Conducted by researchers from Italy's INGV and international partners including Greece and Spain, the paper titled 'Limited impact of the 2025 Kamchatka tsunami explained by the complex seismic rupture' was published in Communications Earth & Environment.
The study explains that while wave run-up near the source reached approximately 18-19 meters along the Kamchatka peninsula and Kuril Islands—comparable to the 20-meter waves of the 1952 event—the impact at great distances from the fault was limited. This containment is attributed to specific characteristics of the seismic rupture itself.
Separately, FUNVISIS reiterated that while it recorded numerous events in its recent weekly report, predicting earthquakes remains impossible for authorities.
At a glance
- 532 global earthquakes detected over the last 24 hours; strongest was M5.4 near Svalbard.
- Mount Etna ash cloud continues to disrupt flights into Catania and other Sicilian destinations.
- Venezuela's SSATV recorded 136 quakes in late September 2026, noting activity began June 24 of that year.
- New research attributes the limited distant impact of the July 29, 2025 Kamchatka tsunami to its complex rupture structure.