La Soufriere SCIENTIFIC UPDATE – 12/04/21 6:00PM

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  1. The pattern of seismic activity changed again, with the end of
    the episodes of high-amplitude tremor 2-8 hours apart.
  2. Three episodes of tremor have been recorded since 6am, two of
    them lower-amplitude and the third, at about 5pm, was high-
    amplitude.
  3. The episodes continue to coincide with periods of enhanced
    venting or explosive activity
  4. A reconnaissance of the entire north coast of St. Vincent from
    Chateaubelair to Georgetown with assistance from the Coast
    Guard.
  5. Observations made indicate that pyroclastic density currents
    (PDCs) had descended several valleys on the southern and
    western flanks of the volcano and had reached the sea at Morne
    Ronde, Larikai and Trois Loupes Bay.
  6. Extensive damage to vegetation was noted in an area extending
    from Larikai Bay to Turner Bay on the west coast.
  7. No other areas along the coast had been affected by PDCs but
    villages located on the eastern flank of the volcano had been
    affected by heavy ashfall.
  8. Explosions and accompanying ashfall, of similar or larger
    magnitude, are likely to continue to occur over the next few days
    with the chance of PDCs occurring.
  9. Visit the International Volcanic Hazard Health Network for
    volcanic ash information resources:

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