Torrential rainfall overnight and into this morning has generated lahars (mudflows) in the red and orange zones near the La Soufriere volcano in St Vincent and the Grenadines.
Lahars are fast moving, dense mixture of rocks, ash and vegetation and water originating from a volcano.
It has the consistency of wet concrete and can cause severe damage to rivers and valleys around the volcano.
UWI Seismic Research centre said the lahars carry large amounts of volcanic material and may generate a rumbling sound.
Where steam can be seen, these are known as hot lahars as the material is meeting still hot/warm deposits.
Once there is heavy rainfall, there will be lahars.
Flooding can also occur as the lahars can block streams and cause the water to find new areas to flow.
Persons should stay away from streams, rivers and areas prone to flooding.
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