Situation Report #23 – Explosive Eruption at La Soufrière Volcano, St. Vincent and the Grenadines (April 24th, 2021 – 8:00 pm)

SITUATION OVERVIEW

The 6:00PM Scientific Advisory from the UWI Seismic Research Centre (SRC) issued on 23rd April 2021, reported the following:

Seismic activity at La Soufrière, St Vincent has been low after the tremor associated with the explosion and ash venting around noon on 22 April.
Only a few long-period, hybrid and volcano-tectonic earthquakes were recorded and there was no further tremoR.
The seismic network recorded signals from multiple lahars (mudflows) at about 9 pm on 22 April. The locations of these lahars have not been determined.
Measurements of sulphur dioxide flux (mass) at La Soufriere volcano was again undertaken along the west coast today with the assistance of the coast An average SO2 flux of 992 tons per day was recorded.

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