THE Trinidad and Tobago Meteorological Service (TTMS) says there is a likelihood of ash particles from the La Soufriere volcano in St Vincent reaching Trinidad and Tobago by Thursday.
In an update, the Met Office said, "The wind regime is changing and the plume is migrating to the east of our islands, but in the upper layers of the atmosphere.
"The probability of ashfall is then still low (20 per cent) but there can be the presence of very fine ash particles within the next 36 to 48 hours in Trinidad and Tobago.
"This ash," it added, "may not be highly discernible as there is still a moderate concentration of Sahara dust in our atmosphere.
There is a 20 per cent chance of its reaching TT by midday on Thursday and the Met Service saidprecautionary measures should be taken by the relevant stakeholders and people with health concerns.
It said it continues to closely monitor the ash's activity and any related weather phenomena which may affect TT.