La Soufriere St. Vincent, SCIENTIFIC UPDATE 30/04/21 6:00 PM
1. Seismic activity at La Soufrière has remained low since the tremor associated with the explosion and ash venting on 22 April.
2. In the last 24 hours, only a few long-period, hybrid and volcano-tectonic earthquakes have been recorded and there was no further tremor.
3. The seismic stations recorded signals from lahars for a 40-minute period starting at about 5 pm. These lahars were much smaller than those on 28 and 29 April.
4. Lahars are a fast-moving, dense mixture of rocks, ash and vegetation and water originating from a volcano.
5. The volcano continues to be in a state of unrest and the alert level is still RED.
6. Explosions with accompanying ashfall, of similar or larger magnitude to those that have already occurred in this eruption, can take place with little or no warning.
7. Visit the International Volcanic Hazard Health Network for volcanic ash information and resources: www.ivhhn.org/information
Caption: Timelapse video from the Belmont Observatory on 30/04/21.
Footage: Richard Robertson, UWI-SRC
NEMO St. Vincent and the Grenadines
API – The Agency For Public Information: St. Vincent and the Grenadines
NEMO Saint Lucia
CDEMA – Caribbean Disaster Emergency Management Agency
Department of Emergency Management
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