Meanwhile, officials in Taiwanese capital Taipei have closed offices and schools in anticipation of rough weather from Malakas.
The second storm, less powerful than Meranti, is expected to lash Taipei with gusts up to 191km/h.
The most destructive categories of tropical storms to strike east Asia are becoming more intense and increasing as much as four-fold in frequency because of climate change, according to research by US-based scientists.
Since the late 1970s, typhoons making land from Vietnam and the Philippines to Korea and Japan have become 12 per cent to 15 per cent more intense.
Those hitting Southeast Asia with a category 4 or 5 strength have more than doubled in number.
- AP, news.com.au