The main airport in Mauritius, shops and other businesses have closed in the capital as the tropical cyclone Calvinia approaches.

The Indian Ocean island's meteorological service said on Monday Cyclone Calvinia had remained almost stationary for some time at about 120 kilometers (72 miles) east of Mahebourg, a small village in southeastern Mauritius.

"A movement towards the west will bring the center closer to Mauritius," the weather service said in a statement.

Gusts of up to 120 km an hour were expected to hit Mauritius by early afternoon on Monday and the airport, Port Louis Harbor, was ordered closed from noon local time.

The meteorological service declared a class III alert — indicating a storm with winds between 111 and 129 miles per hour — for the cyclone and Air Mauritius, the national carrier, postponed all arrivals and departures until further notice, it said in a statement.

Port Louis Harbor is Mauritius' principal gateway and handles about virtually all external trade, including key imports for the population of 1.3 million such as food and oil.