A new swarm of volcano-tectonic earthquakes occurred at La Soufrière Volcano in St. Vincent at 6:38 a.m. on Monday, April 5th, 2021.
The magnitudes of these earthquakes increased until about 8:30 a.m., after which they continued at a fairly steady pace. This swarm of volcano-tectonic earthquakes was located at a depth of about 6 km below the summit of Soufriere. This is slightly deeper than the volcano-tectonic seismic activity recorded between March 22nd and 25th, 2021, which was located at depths of 3 to 5 km below the summit. A volcano-tectonic earthquake occurred at 9:20 a.m. with a magnitude of 3.5 and was felt by residents living near the volcano.
The largest volcano-tectonic earthquake was recorded at 14:16, with a magnitude of 3.9. There were nine other volcano-tectonic earthquakes in the swarm with magnitudes of 3.0 or greater. Since then, seismic activity has decreased significantly. The alert level remains at Orange for the time being.