Tropical storm Mujigae has developed into a typhoon at about 4 am on Sunday as it is approaching the eastern side of Hainan island of China with about 140 km/hour strong wind, said Mr Wanchai Sak-udomchai, director-general of Meteorological Department on Sunday.

The typhoon is moving westward at a speed of about 20 km/hour and is expected to hit landfall in Vietnam today or Monday, he said, adding that the typhoon will bring more rains and heavy rains in upper North and northeastern region.

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