Unless net do some capital investment into more weather sensors placed around Trinidad, they'll get it wrong plenty times. Further, they should have access to many weather satellites so I not sure why they wrong so many times.
remember d nicolas cage movie "the weatherman" how ppl passing by used to pelt down he tail for wrong predictions
i find d ian feller on TTT news gives a good prediction though
i saw today on fb a few hrs ago maracas beach under some water yet here in chaguanas this morning was blazing sun but mid afternoon it became cloudy\overcast , not a drop of rain fall here so far though ....