St. Vincent Volcano Update As Residents Urged To Leave: 'It's Not a Nice Way To Go' On 4/14/21 at 11:37 AM EDT Pyroclastic flows headed down the eastern side of La Soufriѐre volcano in the Caribbean island nation of Saint Vincent and the Grenadines Wednesday as an ongoing eruption continued to generate explosive activity, the country's National Emergency Management Organisation (NEMO) said. Pyroclastic flows are scorching hot, ground-hugging flows of ash, debris and gases that typically hit temperatures of 390-1,300 F and speeds of more than 400 mph. These flows are capable of destroying nearly everything in their path. On Wednesday, Richard Robertson from the University of the West Indies Seismic Research Centre (UWI-SRC) warned anyone in the danger zone surrounding the volcano to evacuate immediately.