Trinidad and Tobago: The axis of the next tropical wave is presently located near 45° West longitude in the central Atlantic and is moving westward at approximately 15 – 20 kt in Trinidad and Tobago.
Depending on its path and variations in forward motion, the axis of this wave should reach the Lesser Antilles by Sunday.
Another tropical wave, located in the eastern Atlantic, is being monitored at this time. The axis is presently near 29° West longitude and is moving toward the west at 15 kt. At this present forward motion, it is expected to be near the Lesser Antilles by Wednesday of next week.
Saturday (05th) Weak low level convergence will produce some pre-dawn, partly cloudy periods, with light to moderate showers and the medium chance (40% – 60%) for a heavy shower or thunderstorm, favouring north Trinidad and southwest Tobago.
Generally fair day with partly cloudy patches producing few late morning to afternoon showers and a medium chance (40% – 60%) for an isolated heavy shower or thunderstorm, favouring western Trinidad.
Generally fair night. Winds from the southeast changing to easterly by evening.
Sunday (06th) Low level convergence associated with the ITCZ and the passing of a tropical wave with weak influence over Trinidad and Tobago, is likely to produce some partly cloudy patches, interrupting fair conditions at times, with a medium chance (40%) for a heavy shower or isolated thunderstorm, favouring western Trinidad and hilly areas, mainly during late morning to afternoon.
Mostly fair evening and night. Winds from the east-southeast to east.
Monday (07th) Some weak low level convergence, and with moist winds from the southeast being affected by orographic (mountains and hills) and topographic (relating to the arrangement of the physical surface features of an area) influences, is likely to produce partly cloudy to cloudy periods.
Light to moderate showers in some areas and a medium chance (40% – 60%) for isolated heavy showers or thunderstorms to develop, especially near hilly areas.
Fair evening and night.
Winds from south-southeast to east-southeast.
Tuesday (08th) Generally fair day. Winds from the southeast can influence some orographic (mountains and hills) showers during the late morning and afternoon.
There is a low chance (30%) for a heavy shower or thunderstorm over western Trinidad and near hilly areas. Fair evening and night. Winds from the southeast changing to east southeast during the evening.
Wednesday (09th) Initially fair conditions over Trinidad and Tobago with brief showers in varying areas.
The passage of a tropical wave with most of its associated weather to the north, is likely to influence some surface instability over Trinidad and Tobago, from late morning, producing cloudy periods with light to moderate showers in varying areas and a medium to high chance (60% – 80%) for isolated heavy showers or thunderstorms.
Winds from southeast to east-southeast.
In the event of a heavy shower or thunderstorm, winds can become gusty and street or flash flooding is likely in the vicinity. With the occurrence of prolonged precipitation, the risk of land slips or landslides becomes elevated.
Saharan dust: Mostly mild concentrations of Saharan dust is in the atmosphere today and tomorrow, becoming moderate at times during Sunday to Tuesday.