rtokens: The northeastern coast of the nearby island of Madagascar has also gone on alert .
pos: DT NN IN DT NN NNP NNP VBD RB JJ IN NNP NN IN JJ NNS .
tokens: The weather in the capital Port Louis was heavily cloudy on Friday afternoon with occasional showers .
ltokens: Winds up to 75 km an hour ( 40 knots ) could blow over Mauritius during the night of Friday to Saturday , it said .