An earthquake swarm with over 300 events over 48 hours is in progress on the Reykjanes Ridge southwest of Eldey, Iceland, since March 23, 2026, with the largest earthquake thus far registered as M4.4. The Icelandic Meteorological Office said there are no indications linking the activity to volcanic processes on the Reykjanes Peninsula.
A major earthquake registered by the USGS as M7.5 struck Tonga at 04:37 UTC on March 24, 2026. The agency is reporting a depth of 237.5 km (147.6 miles). EMSC is reporting M7.6 at a depth of 218 km (135.5 miles). According to available data, there is no tsunami threat from this event.
A strong and shallow earthquake registered by the USGS as M6.2 hit the Samoa Islands region at 15:27 UTC on March 22, 2026. The earthquake occurred at a depth of 10 km (6.2 miles). EMSC is reporting the same magnitude and depth.
A strong and shallow earthquake registered by the USGS as M6.2 hit Tonga at 06:15 UTC on March 22, 2026. The agency is reporting a depth of 10 km (6.2 miles). EMSC is reporting the same magnitude and depth.
A strong and shallow earthquake registered by the USGS and EMSC as M6.7 struck the northern Mid-Atlantic Ridge at 12:16 UTC on March 21, 2026, at a depth of 10 km (6.2 miles).
A strong and shallow earthquake registered by the USGS as M6.1 hit 100 km (62.5 miles) WNW of Isangel, Vanuatu, at 02:30 UTC on March 20, 2026. The earthquake occurred at a depth of 10 km (6.2 miles). This is the second M6+ earthquake of the day, following M6.6 in the South Shetland Islands at 00:22 UTC.
A strong and shallow earthquake registered by the USGS as M6.6 hit the South Shetland Islands at 00:22 UTC on March 20, 2026. The earthquake occurred at a depth of 4.9 km (3 miles). EMSC is reporting the same magnitude and depth.
A strong and shallow earthquake registered by the USGS as M6.3 struck offshore Atacama, Chile, at 13:39 UTC (10:39 LT) on March 13, 2026. The agency is reporting a depth of 10 km (6.2 miles). EMSC is reporting the same magnitude and depth.
A strong earthquake registered by the USGS as M6.0 struck near Naples, Italy, at 23:03 UTC on March 9, 2026 (00:03 LT on March 10). The agency is reporting a depth of 373 km (232 miles). EMSC is reporting M5.9 at a depth of 375 km (233 miles).
A strong earthquake registered by the USGS as M6.0 struck near Hihifo, Tonga at 09:28 UTC on March 8, 2026. The agency is reporting a depth of 116.8 km (72.6 miles). EMSC is reporting M6.0 at a depth of 117 km (72.7 miles).
