美国佛罗里达国际大学气象学教授威洛比在接受央视采访时说，根据美国卫星测绘，“海燕”的威力甚至已经不在卫星所能测量的范围内了。
The National Meteorological Center (NMC) on Sunday raised the warning for Typhoon Haiyan to red, the highest level on its four-color typhoon warning system.
Haiyan, the strongest typhoon in the world so far this year, is moving northwestward after having wreaked havoc in the Philippines, according to the NMC.
The center said the force of Haiyan is weakening. It is moving at 25-30 km per hour and is expected to land in coastal areas between northern Vietnam and the China-Vietnam border on Monday morning or at noon.
Then it will head eastward and influence Chinese provinces of Hainan and Guangdong as well as Guangxi Zhuang Autonomous Region.
Haiyan will bring strong winds and torrential rain to China's southern and southwestern regions, according to the NMC.
China uses a four-tier, color-coded typhoon warning system, with red representing the most severe, followed by orange, yellow and blue.
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