St. Vincent volcano in Caribbean erupts again in large explosion By (0) Smoke and ash are seen during an eruption on Friday from the La Soufriere volcano on the island of St. Vincent in Saint Vincent and the Grenadines. Photo by UWI Seismic Research/EPA-EFE April 12 (UPI) -- A volcano on the southeastern Caribbean island of St. Vincent erupted again on Monday and residents were told to expect more ash clouds. More than 16,000 people have evacuated their homes since La Soufrière volcano first erupted on Friday. St. Vincent is the largest island of the country St. Vincent and the Grenadines.