Mauritius has issued a class four warning – the highest weather alert – because a cyclone is approaching the Indian Ocean island. The BBC reports that Tropical storm Batsirai has also been upgraded to an intense tropical cyclone to reflect its strength. The weather is expected to deteriorate further with rainfall over the whole island. The cyclone should pass at its closest point at 16:00 local time (GMT 12:00) at around 120km (75 miles) from Grand Bay, a tourist resort in the north.