BEIJING, Nov. 20 -- China's national observatory on Monday renewed a blue alert for strong winds in some parts of the country.

From 8 p.m. Monday to 8 p.m. Tuesday, strong winds are expected in parts of Xinjiang Uygur Autonomous Region, Inner Mongolia Autonomous Region, Gansu Province, Qinghai Province, and Xizang Autonomous Region, the National Meteorological Center (NMC) said.

During the same period, gales are expected to sweep parts of the Taiwan Strait, the Bashi Channel and the South China Sea, according to the NMC.

The NMC has issued a reminder for all ships and personnel navigating and operating in sea areas affected by the strong winds, urging them to pay attention to navigational safety.

Relevant departments have been called upon to prevent fires in forests, grasslands and urban areas, as well as to ensure transport security.

China has a four-tier, color-coded weather warning system for strong winds, with red representing the most severe warning, followed by orange, yellow and blue.