Volcanic ash has continued to fall and there are warnings of more danger.
The pyroclastic flows “contain a high-density mixture of blocks of hot lava, pumice, ash and volcanic gas. They move at high speed along volcanic slopes, usually following valleys,” according to the USGS, and “destroy almost everything in them. has in its path “.
“Based on visual observations and satellite imagery, the intervals are associated with periods of explosive activity or improved ventilation,” he said.
“During these periods thunder and lightning were experienced.”
Ash had continued to fall on the island overnight and had also impacted on the neighboring islands, the Grenadines, Barbados and St. Lucia, he said. “Explosions and ash falls, of similar or greater magnitude, are likely to continue to occur over the next few days.”
On Thursday, Prime Minister Ralph Gonsalves declared a disaster alert triggered by a change in the eruptive activity of the volcano. He issued an evacuation order for all residents living in what is considered a “red zone.” Gonsalves said it could take four months to restore normal life on the island.
Authorities have said the explosive eruptions are likely to continue “for days and possibly weeks” after Friday’s first eruption emitted a plume of ash that stretched into the sky to 6,096 meters.
La Soufrière is located on the largest island in the chain of Saint Vincent and the Grenadines.
CNN’s Patrick Oppmann reported on Havana and Claudia Dominguez of Atlanta. CNN’s Susannah Cullinane, Theresa Waldrup and Radina Gigova also contributed to this report.