GUANGZHOU, Sept. 23 (Xinhua) -- South China's Guangdong Province raised its wind emergency response to the highest level at 10 a.m. Tuesday, as Typhoon Ragasa is forecast to make landfall along the central or western coastal areas of the province as a strong or super strong typhoon within 24 hours. Typhoon Ragasa entered the South China Sea late Monday and is forecast to move northwest at a speed of about 20 km per hour. In the neighboring Guangxi Zhuang Autonomous Region, all passenger and ferry ships in the coastal waters of Guangxi have been suspended. Maritime authorities in Guangxi's Beihai City have restricted the Beihai-Weizhou Island passenger ship route to disembarkation only, with no boarding allowed, and the evacuation of the remaining 6,000 tourists from Weizhou Island to Beihai is scheduled for completion on Tuesday. China has a four-tier emergency response system, with Level I being the most severe response.