Experts warn about the danger of pyroclastic density currents

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    (Photo Credit: NEMO St. Vincent and the Grenadines)

    There was a large explosion at the La Soufriere Volcano at approximately 4:15am today.

    The UWI Seismic Research Centre says its team in St. Vincent has since observed pyroclastic density currents or flows on the flanks of the volcano – these are fast-moving flows of solidified lava pieces, volcanic ash, and hot gases.

    The same was reported by NEMO St. Vincent, which says explosions and accompanying ashfall of similar or larger magnitude, are likely to continue to occur over the next few days.

    NEMO is attempting again today to evacuate anyone still in Red Zone in the vicinity of the volcano.

    Speaking this morning, Professor Richard Robertson of the UWI Seismic Research Centre warned about the danger posed by pyroclastic density currents or PDCs.

    He also put the current situation in St Vincent into context.

    Also, according to the UWI-SRC, analysis of satellite imagery indicate that the explosive eruptions thus far have destroyed the pre-existing domes (1979 and 2020-21).
    As such, the current explosions are being generated from a new vent.